/* Premium UI layer for AI Study Buddy. Kept separate from Blade so routes and API stay untouched. */
:root {
    --premium-bg: #070b18;
    --premium-bg-2: #0d1530;
    --premium-panel: rgba(255, 255, 255, .078);
    --premium-panel-strong: rgba(255, 255, 255, .12);
    --premium-line: rgba(255, 255, 255, .16);
    --premium-text: #f8fafc;
    --premium-muted: #aebbd4;
    --premium-blue: #60a5fa;
    --premium-cyan: #38d5e8;
    --premium-violet: #8b5cf6;
    --premium-purple: #a855f7;
    --premium-shadow: 0 24px 90px rgba(2, 6, 23, .34);
}

html {
    scroll-behavior: smooth;
}

.main-full {
    position: relative;
    z-index: 1;
}

.navbar-brand-custom .brand-icon {
    color: #fff;
    font-size: 1rem;
}

.navbar-main .container {
    max-width: 1240px;
}

.navbar-brand-custom {
    flex: 0 0 auto;
    white-space: nowrap;
}

.nav-links-desktop {
    gap: .75rem;
    min-width: 0;
}

.nav-primary-group,
.nav-utility-group {
    display: inline-flex;
    align-items: center;
}

.nav-primary-group {
    gap: .14rem;
    padding: .22rem;
    border: 1px solid rgba(79, 70, 229, .12);
    border-radius: 15px;
    background: rgba(255, 255, 255, .62);
    box-shadow: 0 12px 30px rgba(15, 23, 42, .05);
}

.nav-utility-group {
    gap: .38rem;
}

.nav-primary-group .nav-link-custom {
    display: inline-flex;
    align-items: center;
    gap: .1rem;
    padding: .44rem .64rem;
    border-radius: 11px;
    font-size: .82rem;
    font-weight: 720;
}

.nav-utility-button {
    min-height: 38px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .38rem;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: .46rem .7rem;
    color: var(--text-muted);
    background: var(--surface);
    text-decoration: none;
    font-size: .82rem;
    font-weight: 800;
    line-height: 1;
    transition: all .2s ease;
}

.nav-utility-button:hover,
.nav-utility-button.active {
    color: var(--primary);
    border-color: rgba(79, 70, 229, .24);
    background: rgba(79, 70, 229, .09);
}

.nav-utility-group .theme-toggle-button {
    min-height: 38px;
    border-radius: 12px;
    padding: .46rem .68rem;
    font-size: .82rem;
    line-height: 1;
}

.nav-docs-link.active {
    color: #fff;
    border-color: transparent;
    background: var(--gradient-card);
    box-shadow: 0 12px 26px rgba(79, 70, 229, .18);
}

.home-premium {
    background:
        radial-gradient(circle at 16% 34rem, rgba(96, 165, 250, .12), transparent 26rem),
        radial-gradient(circle at 86% 58rem, rgba(168, 85, 247, .1), transparent 28rem),
        #f8fafc;
    margin-top: -1.5rem;
    overflow: hidden;
}

.premium-container {
    width: min(1240px, calc(100% - 2.25rem));
    margin-inline: auto;
}

.premium-hero {
    position: relative;
    min-height: calc(100vh - 70px);
    display: flex;
    align-items: center;
    color: var(--premium-text);
    isolation: isolate;
    overflow: hidden;
    background:
        radial-gradient(circle at 16% 8%, rgba(96, 165, 250, .16), transparent 26rem),
        radial-gradient(circle at 86% 18%, rgba(168, 85, 247, .2), transparent 28rem),
        linear-gradient(135deg, #070b18 0%, #0b1020 48%, #151034 100%);
}

.premium-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        linear-gradient(rgba(255, 255, 255, .035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, .035) 1px, transparent 1px);
    background-size: 52px 52px;
    mask-image: radial-gradient(circle at 56% 36%, #000 0%, transparent 74%);
    pointer-events: none;
    z-index: -2;
}

#landing-particles-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: .7;
}

.cursor-glow {
    position: absolute;
    width: 28rem;
    height: 28rem;
    border-radius: 999px;
    background: radial-gradient(circle, rgba(56, 213, 232, .18), rgba(139, 92, 246, .1) 38%, transparent 68%);
    filter: blur(18px);
    transform: translate(-50%, -50%);
    left: var(--glow-x, 50%);
    top: var(--glow-y, 30%);
    pointer-events: none;
    z-index: -1;
}

.hero-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(360px, .86fr);
    gap: clamp(2rem, 4vw, 4rem);
    align-items: center;
    padding: 3.5rem 0;
}

.hero-kicker {
    display: inline-flex;
    align-items: center;
    gap: .55rem;
    color: #dbeafe;
    background: rgba(255, 255, 255, .08);
    border: 1px solid rgba(255, 255, 255, .15);
    border-radius: 999px;
    padding: .48rem .8rem;
    font-size: .8rem;
    font-weight: 700;
    letter-spacing: .01em;
    backdrop-filter: blur(16px);
}

.hero-kicker-dot {
    width: .55rem;
    height: .55rem;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--premium-cyan), var(--premium-violet));
    box-shadow: 0 0 22px rgba(56, 213, 232, .65);
}

.hero-title {
    margin: 1.2rem 0 .95rem;
    font-size: clamp(3.1rem, 8vw, 6.6rem);
    line-height: .92;
    letter-spacing: 0;
    font-weight: 900;
}

.hero-title span {
    display: block;
    color: transparent;
    background: linear-gradient(100deg, #fff 12%, #bfdbfe 42%, #d8b4fe 78%);
    -webkit-background-clip: text;
    background-clip: text;
}

.hero-subtitle {
    max-width: 42rem;
    color: var(--premium-muted);
    font-size: clamp(1rem, 1.65vw, 1.22rem);
    line-height: 1.75;
    margin: 0 0 1.65rem;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: .8rem;
    margin-bottom: 1.7rem;
}

.premium-btn {
    display: inline-flex;
    align-items: center;
    gap: .55rem;
    border-radius: 999px;
    padding: .82rem 1.15rem;
    text-decoration: none;
    font-weight: 800;
    transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
}

.premium-btn.primary {
    color: #06111f;
    background: linear-gradient(135deg, #e0f2fe, #a78bfa);
    box-shadow: 0 18px 45px rgba(96, 165, 250, .22);
}

.premium-btn.secondary {
    color: #eaf2ff;
    border: 1px solid rgba(255, 255, 255, .22);
    background: rgba(255, 255, 255, .075);
    backdrop-filter: blur(16px);
}

.premium-btn:hover {
    transform: translateY(-2px);
}

.hero-mini-stats {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: .72rem;
    max-width: 47rem;
}

.hero-mini-stat {
    min-height: 88px;
    padding: .85rem;
    border-radius: 18px;
    border: 1px solid rgba(255, 255, 255, .14);
    background: rgba(255, 255, 255, .064);
    backdrop-filter: blur(18px);
    cursor: pointer;
    user-select: none;
    transition: transform .22s ease, border-color .22s ease, background .22s ease, box-shadow .22s ease;
}

.hero-mini-stat:hover,
.hero-mini-stat:focus-visible {
    border-color: rgba(191, 219, 254, .52);
    background: rgba(255, 255, 255, .1);
    box-shadow: 0 18px 45px rgba(96, 165, 250, .12);
    outline: 0;
}

.mini-stat-icon {
    width: 30px;
    height: 30px;
    display: grid;
    place-items: center;
    border-radius: 10px;
    margin-bottom: .55rem;
    color: #e0f2fe;
    background: linear-gradient(135deg, rgba(96, 165, 250, .25), rgba(168, 85, 247, .2));
}

.hero-mini-stat b {
    display: block;
    font-size: .86rem;
    color: #fff;
}

.hero-mini-stat small {
    color: #aebbd4;
    font-size: .72rem;
}

.hero-visual {
    position: relative;
    min-height: 460px;
    display: grid;
    place-items: center;
}

.hero-image-stage {
    position: relative;
    width: min(100%, 540px);
    margin-inline: auto;
    padding: .85rem;
    border-radius: 32px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, .18);
    background:
        radial-gradient(circle at 68% 18%, rgba(56, 213, 232, .22), transparent 34%),
        radial-gradient(circle at 18% 82%, rgba(168, 85, 247, .2), transparent 36%),
        linear-gradient(145deg, rgba(255, 255, 255, .13), rgba(255, 255, 255, .045));
    box-shadow: var(--premium-shadow), inset 0 1px 0 rgba(255, 255, 255, .16);
    backdrop-filter: blur(18px);
}

.hero-image-stage::after {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background:
        radial-gradient(circle at 58% 20%, rgba(255, 255, 255, .1), transparent 28%),
        linear-gradient(180deg, rgba(7, 11, 24, .02), rgba(7, 11, 24, .18));
}

.hero-image-stage::before {
    content: "";
    display: block;
    aspect-ratio: 16 / 11;
}

.hero-image-stage img {
    position: absolute;
    inset: .85rem;
    width: calc(100% - 1.7rem);
    height: calc(100% - 1.7rem);
    object-fit: contain;
    display: block;
    border-radius: 24px;
    background:
        radial-gradient(circle at 52% 46%, rgba(56, 213, 232, .22), transparent 36%),
        linear-gradient(135deg, rgba(11, 16, 32, .88), rgba(67, 56, 202, .38));
    filter: saturate(1.06) contrast(1.03);
    transform: none;
}

.hero-visual-chip {
    position: absolute;
    z-index: 2;
    display: inline-flex;
    align-items: center;
    gap: .45rem;
    border: 1px solid rgba(255, 255, 255, .22);
    border-radius: 999px;
    padding: .58rem .8rem;
    color: #f8fafc;
    background: rgba(7, 11, 24, .58);
    box-shadow: 0 16px 34px rgba(2, 6, 23, .25);
    backdrop-filter: blur(16px);
    font-weight: 800;
    font-size: .82rem;
    cursor: pointer;
    transition: transform .2s ease, background .2s ease, border-color .2s ease;
}

.hero-visual-chip:hover,
.hero-visual-chip:focus-visible {
    transform: translateY(-2px);
    background: rgba(37, 99, 235, .28);
    border-color: rgba(191, 219, 254, .45);
    outline: none;
}

.chip-summary {
    left: 1.25rem;
    top: 1.2rem;
}

.chip-quiz {
    right: 1.3rem;
    top: 42%;
}

.chip-chat {
    left: 1.6rem;
    bottom: 1.3rem;
}

.orb-stage {
    position: absolute;
    inset: 2.2rem 0 auto auto;
    width: min(100%, 470px);
    height: 430px;
    border-radius: 34px;
    background:
        radial-gradient(circle at 50% 26%, rgba(255, 255, 255, .16), transparent 36%),
        linear-gradient(145deg, rgba(255, 255, 255, .14), rgba(255, 255, 255, .035));
    border: 1px solid rgba(255, 255, 255, .18);
    box-shadow: var(--premium-shadow), inset 0 1px 0 rgba(255, 255, 255, .24);
    overflow: hidden;
    backdrop-filter: blur(18px);
}

.orb-stage::before {
    content: "";
    position: absolute;
    inset: -40%;
    background: conic-gradient(from 120deg, transparent, rgba(56, 213, 232, .3), transparent, rgba(168, 85, 247, .28), transparent);
    filter: blur(22px);
    animation: rotateAura 18s linear infinite;
}

#landing-orb-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

.floating-asset {
    position: absolute;
    display: grid;
    grid-template-columns: 38px 1fr;
    gap: .72rem;
    align-items: center;
    width: max-content;
    max-width: 230px;
    padding: .82rem .95rem;
    color: #fff;
    background: rgba(7, 11, 24, .58);
    border: 1px solid rgba(255, 255, 255, .18);
    border-radius: 20px;
    box-shadow: 0 20px 42px rgba(0, 0, 0, .25);
    backdrop-filter: blur(18px);
    animation: floatCard 6s ease-in-out infinite;
}

.floating-asset svg {
    width: 38px;
    height: 38px;
    padding: 8px;
    border-radius: 14px;
    background: rgba(255, 255, 255, .1);
}

.floating-asset small {
    display: block;
    color: #b9c6dc;
    font-size: .72rem;
    font-weight: 700;
}

.floating-asset b {
    display: block;
    font-size: .92rem;
    line-height: 1.15;
}

.asset-book {
    left: -1rem;
    top: 2.2rem;
}

.asset-doc {
    right: -1rem;
    top: 7.2rem;
    animation-delay: -1.4s;
}

.asset-quiz {
    left: .6rem;
    bottom: 5.5rem;
    animation-delay: -2.2s;
}

.asset-chat {
    right: 1.2rem;
    bottom: 2.7rem;
    animation-delay: -3.4s;
}

.scroll-cue {
    position: absolute;
    left: 50%;
    bottom: 1.2rem;
    transform: translateX(-50%);
    color: rgba(255, 255, 255, .62);
    font-size: .78rem;
    letter-spacing: .08em;
    text-transform: uppercase;
    text-decoration: none;
    transition: color .2s ease, transform .2s ease;
}

.scroll-cue:hover {
    color: #fff;
    transform: translateX(-50%) translateY(-2px);
}

.premium-section {
    padding: clamp(3rem, 6vw, 4.75rem) 0;
    background: #f8fafc;
}

.section-heading {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: end;
    margin-bottom: 1.35rem;
}

.section-heading h2 {
    font-size: clamp(1.75rem, 4vw, 3rem);
    letter-spacing: 0;
    font-weight: 900;
    margin: 0;
}

.section-heading p {
    max-width: 33rem;
    margin: 0;
    color: #64748b;
    line-height: 1.65;
}

.problem-grid,
.uts-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1rem;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 1.1rem;
    align-items: stretch;
}

.premium-card {
    position: relative;
    padding: 1.15rem;
    border-radius: 24px;
    border: 1px solid rgba(15, 23, 42, .075);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, .96), rgba(248, 250, 252, .88));
    box-shadow: 0 14px 38px rgba(15, 23, 42, .07);
    overflow: hidden;
    transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
}

.feature-grid .premium-card {
    min-height: 100%;
    display: flex;
    flex-direction: column;
    gap: .15rem;
    isolation: isolate;
}

.premium-card::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 20% 0%, rgba(96, 165, 250, .12), transparent 36%);
    opacity: 0;
    transition: opacity .22s ease;
    pointer-events: none;
}

.premium-card:hover {
    transform: translateY(-4px);
    border-color: rgba(99, 102, 241, .26);
    box-shadow: 0 22px 50px rgba(15, 23, 42, .1);
}

.premium-card:hover::before {
    opacity: 1;
}

.premium-card-icon {
    width: 45px;
    height: 45px;
    display: grid;
    place-items: center;
    color: #2563eb;
    border-radius: 15px;
    background: linear-gradient(135deg, rgba(96, 165, 250, .17), rgba(168, 85, 247, .14));
    margin-bottom: 1rem;
}

.premium-card h3 {
    font-size: 1rem;
    font-weight: 850;
    margin-bottom: .45rem;
}

.premium-card p {
    color: #64748b;
    line-height: 1.65;
    font-size: .9rem;
    margin: 0;
}

.premium-card .card-action {
    display: inline-flex;
    align-items: center;
    margin-top: auto;
    padding-top: 1rem;
    color: #4f46e5;
    font-size: .84rem;
    font-weight: 800;
    text-decoration: none;
}

.feature-card-art {
    position: relative;
    width: 100%;
    height: clamp(142px, 13vw, 176px);
    flex: 0 0 auto;
    overflow: hidden;
    border-radius: 20px;
    margin-bottom: .95rem;
    background: transparent;
    border: 1px solid rgba(15, 23, 42, .06);
    box-shadow: 0 16px 36px rgba(15, 23, 42, .075);
}

.feature-card-art img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
    object-position: center;
    filter: saturate(1.08) contrast(1.03);
    transform: none;
    transition: transform .35s ease, filter .35s ease;
}

.feature-card-art::after {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, .04), rgba(7, 11, 24, .22)),
        radial-gradient(circle at 80% 12%, rgba(56, 213, 232, .16), transparent 36%);
}

.premium-card:hover .feature-card-art img {
    transform: scale(1.045);
    filter: saturate(1.13) contrast(1.04);
}

.upload-page-art {
    width: 100%;
    height: 170px;
    flex-basis: auto;
    border-radius: 24px;
    margin-bottom: 1rem;
}

.upload-page-art img {
    padding: 0;
}

.empty-state-visual {
    width: 116px;
    height: 116px;
    display: block;
    object-fit: cover;
    border-radius: 24px;
    margin: 0 auto 1rem;
    box-shadow: 0 18px 40px rgba(15, 23, 42, .12);
    background: linear-gradient(135deg, #eef2ff, #f8fafc);
}

.empty-state-visual.small {
    width: 92px;
    height: 92px;
    border-radius: 20px;
}

.empty-state-visual.dark {
    border-radius: 999px;
    box-shadow: 0 18px 50px rgba(56, 213, 232, .18);
}

.chat-avatar {
    width: 34px;
    height: 34px;
    flex: 0 0 34px;
    border-radius: 999px;
    object-fit: cover;
    border: 1px solid rgba(148, 163, 184, .28);
    box-shadow: 0 6px 14px rgba(15, 23, 42, .08);
    background: rgba(255, 255, 255, .72);
}

.chat-row {
    display: flex;
    align-items: flex-start;
    gap: .65rem;
    margin-bottom: .85rem;
}

.chat-row.user {
    justify-content: flex-end;
}

.chat-row.user .chat-avatar {
    order: 2;
}

.feature-asset-thumb {
    width: 74px;
    height: 74px;
    object-fit: contain;
    padding: .35rem;
    border-radius: 18px;
    box-shadow: 0 12px 28px rgba(15, 23, 42, .14);
    border: 1px solid rgba(255, 255, 255, .18);
    background: linear-gradient(135deg, #eef2ff, #fff);
}

.workspace-section {
    padding: clamp(2.8rem, 6vw, 4.8rem) 0 4rem;
    background:
        radial-gradient(circle at 85% 12%, rgba(96, 165, 250, .16), transparent 22rem),
        radial-gradient(circle at 10% 82%, rgba(168, 85, 247, .09), transparent 26rem),
        linear-gradient(180deg, #f8fafc, #eef2ff 56%, #f8fafc);
}

.workspace-shell {
    display: grid;
    grid-template-columns: minmax(340px, .82fr) minmax(0, 1.18fr);
    gap: 1.35rem;
    align-items: stretch;
}

.workspace-panel {
    position: relative;
    border-radius: 30px;
    border: 1px solid rgba(15, 23, 42, .08);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, .94), rgba(248, 250, 252, .82));
    box-shadow: 0 22px 70px rgba(15, 23, 42, .085);
    backdrop-filter: blur(20px);
}

.workspace-panel .nav-tabs {
    gap: .4rem;
    border-bottom: 0;
    background: #f1f5f9;
    padding: .32rem;
    border-radius: 16px;
}

.workspace-panel .nav-tabs .nav-link {
    border-radius: 12px;
    border: 0;
    margin: 0;
}

.workspace-panel .nav-tabs .nav-link.active {
    background: #fff;
    box-shadow: 0 8px 22px rgba(15, 23, 42, .07);
}

.upload-drop {
    border: 1.5px dashed rgba(79, 70, 229, .28);
    background: linear-gradient(135deg, rgba(79, 70, 229, .045), rgba(56, 213, 232, .06));
    border-radius: 20px;
    padding: 1rem;
}

.result-box.premium-result {
    min-height: 420px;
    max-height: min(66vh, 680px);
    border-radius: 24px;
    padding: 1.5rem;
    background:
        radial-gradient(circle at 15% 8%, rgba(56, 213, 232, .1), transparent 28%),
        radial-gradient(circle at 85% 90%, rgba(168, 85, 247, .08), transparent 32%),
        linear-gradient(145deg, #0b1020 0%, #111936 100%);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, .08);
    overflow: auto;
    border: 1px solid rgba(255, 255, 255, .06);
}

.result-empty {
    min-height: 360px;
    display: grid;
    place-items: center;
    text-align: center;
}

.empty-state-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: .35rem;
}

.ai-orb-illustration {
    position: relative;
    width: 168px;
    height: 168px;
    margin-bottom: 1.15rem;
    display: grid;
    place-items: center;
    border-radius: 999px;
    background:
        radial-gradient(circle at 50% 48%, rgba(56, 213, 232, .24), transparent 42%),
        radial-gradient(circle at 50% 50%, rgba(168, 85, 247, .16), transparent 64%);
    filter: drop-shadow(0 22px 42px rgba(56, 213, 232, .16));
}

.ai-orb-illustration::before {
    content: "";
    position: absolute;
    inset: 19px;
    border-radius: 999px;
    background:
        linear-gradient(135deg, rgba(56, 213, 232, .24), rgba(139, 92, 246, .22)),
        rgba(15, 23, 42, .72);
    border: 1px solid rgba(191, 219, 254, .22);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, .12), 0 18px 48px rgba(2, 6, 23, .34);
}

.ai-orb-core {
    position: relative;
    z-index: 3;
    width: 92px;
    height: 72px;
    border-radius: 30px;
    background:
        radial-gradient(circle at 50% 35%, rgba(56, 213, 232, .18), transparent 54%),
        linear-gradient(180deg, #111936, #060b1a);
    border: 2px solid rgba(224, 242, 254, .82);
    box-shadow: 0 0 30px rgba(56, 213, 232, .22), inset 0 1px 0 rgba(255, 255, 255, .1);
}

.ai-orb-core::before,
.ai-orb-core::after {
    content: "";
    position: absolute;
    top: 24px;
    width: 20px;
    height: 12px;
    border-radius: 0 0 18px 18px;
    border-bottom: 4px solid #67e8f9;
    filter: drop-shadow(0 0 8px rgba(103, 232, 249, .7));
}

.ai-orb-core::before {
    left: 23px;
}

.ai-orb-core::after {
    right: 23px;
}

.ai-mouth {
    position: absolute;
    left: 50%;
    bottom: 17px;
    width: 24px;
    height: 10px;
    border-radius: 0 0 999px 999px;
    background: #67e8f9;
    transform: translateX(-50%);
    box-shadow: 0 0 12px rgba(103, 232, 249, .68);
}

.ai-orbit {
    position: absolute;
    z-index: 2;
    left: 50%;
    top: 50%;
    width: 132px;
    height: 42px;
    border-radius: 999px;
    border: 1.5px solid rgba(56, 213, 232, .5);
    transform: translate(-50%, -50%) rotate(-14deg);
    box-shadow: 0 0 24px rgba(56, 213, 232, .12);
}

.ai-orbit.orbit-two {
    width: 144px;
    height: 46px;
    border-color: rgba(168, 85, 247, .4);
    transform: translate(-50%, -50%) rotate(42deg);
}

.ai-spark {
    position: absolute;
    z-index: 4;
    width: 8px;
    height: 8px;
    border-radius: 999px;
    background: #67e8f9;
    box-shadow: 0 0 18px rgba(103, 232, 249, .78);
}

.spark-one {
    left: 36px;
    top: 38px;
}

.spark-two {
    right: 38px;
    bottom: 42px;
    background: #c4b5fd;
    box-shadow: 0 0 18px rgba(196, 181, 253, .72);
}

.ai-orb-illustration.compact {
    width: 126px;
    height: 126px;
    margin-bottom: .85rem;
    filter: drop-shadow(0 18px 34px rgba(56, 213, 232, .13));
}

.ai-orb-illustration.compact::before {
    inset: 16px;
}

.ai-orb-illustration.compact .ai-orb-core {
    width: 76px;
    height: 60px;
    border-radius: 24px;
}

.ai-orb-illustration.compact .ai-orb-core::before,
.ai-orb-illustration.compact .ai-orb-core::after {
    top: 20px;
    width: 16px;
    height: 10px;
}

.ai-orb-illustration.compact .ai-orb-core::before {
    left: 19px;
}

.ai-orb-illustration.compact .ai-orb-core::after {
    right: 19px;
}

.ai-orb-illustration.compact .ai-mouth {
    bottom: 13px;
    width: 20px;
}

.ai-orb-illustration.compact .ai-orbit {
    width: 104px;
    height: 34px;
}

.ai-orb-illustration.compact .ai-orbit.orbit-two {
    width: 116px;
    height: 38px;
}

.doc-chat-empty {
    min-height: 100%;
    padding: 3rem 1rem;
    display: grid;
    place-items: center;
    align-content: center;
    text-align: center;
    color: var(--text-muted);
}

.doc-chat-empty b {
    display: block;
    color: #0f172a;
    font-size: 1rem;
    margin-bottom: .35rem;
}

.doc-chat-empty > span {
    display: block;
    max-width: 24rem;
    line-height: 1.6;
    font-size: .88rem;
}

.empty-avatar-wrapper {
    position: relative;
    width: 100px;
    height: 100px;
    margin-bottom: .75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0;
    line-height: 0;
}

.empty-avatar-wrapper .empty-state-visual.dark {
    position: relative;
    z-index: 2;
    width: 100px;
    height: 100px;
    margin: 0;
    border: 2px solid rgba(56, 213, 232, .3);
    box-shadow: 0 12px 36px rgba(56, 213, 232, .2), 0 0 60px rgba(96, 165, 250, .1);
}

.empty-avatar-ring {
    position: absolute;
    inset: -8px;
    border-radius: 999px;
    border: 1.5px solid transparent;
    background: conic-gradient(from 0deg, rgba(56, 213, 232, .5), rgba(168, 85, 247, .4), rgba(96, 165, 250, .5), rgba(56, 213, 232, .5)) border-box;
    -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    animation: spinRing 8s linear infinite;
    z-index: 1;
}

@keyframes spinRing {
    to { transform: rotate(360deg); }
}

.empty-state-desc {
    font-size: .88rem;
    color: #94a3b8;
    max-width: 320px;
    line-height: 1.6;
    margin: 0 0 1rem;
}

.empty-state-hints {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: .45rem;
}

.hint-pill {
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    padding: .38rem .72rem;
    border-radius: 999px;
    font-size: .74rem;
    font-weight: 700;
    color: #cbd5e1;
    background: rgba(255, 255, 255, .06);
    border: 1px solid rgba(255, 255, 255, .1);
    backdrop-filter: blur(8px);
    transition: background .2s ease, border-color .2s ease, color .2s ease;
}

.hint-pill:hover {
    background: rgba(96, 165, 250, .12);
    border-color: rgba(96, 165, 250, .3);
    color: #e0f2fe;
}

.hint-pill i {
    font-size: .82rem;
    color: var(--premium-cyan);
}

.empty-icon-orbit {
    width: 82px;
    height: 82px;
    margin-inline: auto;
    margin-bottom: 1rem;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, .14);
    background: radial-gradient(circle, rgba(96, 165, 250, .22), rgba(168, 85, 247, .12) 52%, transparent 74%);
    position: relative;
}

.empty-icon-orbit::before,
.empty-icon-orbit::after {
    content: "";
    position: absolute;
    inset: 18px;
    border-radius: 999px;
    border: 1px solid rgba(56, 213, 232, .42);
    transform: rotate(34deg) scaleX(1.35);
}

.empty-icon-orbit::after {
    border-color: rgba(168, 85, 247, .42);
    transform: rotate(-42deg) scaleX(1.3);
}

/* Materials empty state */
.materials-empty-state {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.35rem 1.25rem;
    border-radius: 20px;
    background:
        radial-gradient(circle at 14% 22%, rgba(56, 213, 232, .09), transparent 12rem),
        linear-gradient(135deg, rgba(79, 70, 229, .045), rgba(56, 213, 232, .045));
    border: 1px solid rgba(79, 70, 229, .12);
}

.materials-empty-icon,
.materials-empty-visual {
    width: 68px;
    height: 58px;
    flex: 0 0 68px;
    display: grid;
    place-items: center;
    border-radius: 18px;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, .95), rgba(248, 250, 252, .82));
    border: 1px solid rgba(99, 102, 241, .14);
    box-shadow: 0 16px 34px rgba(15, 23, 42, .08);
    color: #6366f1;
    font-size: 1.2rem;
    position: relative;
    overflow: hidden;
}

.materials-empty-visual::before {
    content: "";
    position: absolute;
    inset: 0 0 auto;
    height: 14px;
    background: linear-gradient(90deg, rgba(56, 213, 232, .42), rgba(139, 92, 246, .42));
}

.materials-file-line {
    position: absolute;
    left: 14px;
    right: 14px;
    height: 4px;
    border-radius: 999px;
    background: rgba(148, 163, 184, .28);
}

.materials-file-line.line-one {
    top: 25px;
}

.materials-file-line.line-two {
    top: 34px;
    right: 24px;
}

.materials-file-line.line-three {
    top: 43px;
    right: 34px;
}

.materials-empty-visual i {
    position: absolute;
    right: 9px;
    bottom: 7px;
    width: 24px;
    height: 24px;
    display: grid;
    place-items: center;
    border-radius: 9px;
    color: #fff;
    background: linear-gradient(135deg, #4f46e5, #06b6d4);
    font-size: .95rem;
}

.materials-empty-text {
    min-width: 0;
}

.quick-actions {
    display: flex;
    flex-wrap: wrap;
    gap: .65rem;
    align-items: center;
}

.quick-actions .btn {
    white-space: nowrap;
}

.feature-target-pulse {
    animation: featurePulse 1.15s ease both;
}

.materials-premium {
    margin-top: 1.25rem;
    border-radius: 24px;
}

.feature-workspace {
    position: relative;
    margin: -1rem 0 1rem;
    padding: clamp(1.25rem, 3vw, 2rem) 0 1rem;
}

.feature-workspace::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    background:
        radial-gradient(circle at 15% 14%, rgba(96, 165, 250, .18), transparent 22rem),
        radial-gradient(circle at 88% 8%, rgba(168, 85, 247, .16), transparent 26rem),
        linear-gradient(180deg, #f8fafc 0%, #eef2ff 68%, #f8fafc 100%);
}

.feature-page-hero {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.25rem;
    margin-bottom: 1.25rem;
    padding: clamp(1.25rem, 4vw, 2rem);
    color: var(--premium-text);
    border: 1px solid rgba(255, 255, 255, .16);
    border-radius: 28px;
    overflow: hidden;
    position: relative;
    background:
        radial-gradient(circle at 16% 10%, rgba(96, 165, 250, .22), transparent 24rem),
        radial-gradient(circle at 86% 4%, rgba(168, 85, 247, .2), transparent 26rem),
        linear-gradient(135deg, #08111f 0%, #0d1530 54%, #1d1640 100%);
    box-shadow: 0 24px 70px rgba(15, 23, 42, .16);
    isolation: isolate;
}

.feature-page-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        linear-gradient(rgba(255, 255, 255, .04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, .04) 1px, transparent 1px);
    background-size: 46px 46px;
    opacity: .55;
    pointer-events: none;
    z-index: -1;
}

.feature-kicker {
    display: inline-flex;
    align-items: center;
    gap: .45rem;
    margin-bottom: .8rem;
    padding: .38rem .68rem;
    color: #dbeafe;
    font-size: .78rem;
    font-weight: 800;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, .16);
    background: rgba(255, 255, 255, .08);
}

.feature-page-hero h1 {
    max-width: 680px;
    margin: 0 0 .55rem;
    font-size: clamp(1.85rem, 4vw, 3.2rem);
    line-height: 1.04;
    font-weight: 900;
    letter-spacing: 0;
}

.feature-page-hero p {
    max-width: 650px;
    margin: 0;
    color: #b8c4da;
    font-size: 1rem;
    line-height: 1.7;
}

.feature-hero-card {
    position: relative;
    width: min(28vw, 330px);
    min-width: 260px;
    padding: .85rem;
    border-radius: 26px;
    border: 1px solid rgba(255, 255, 255, .18);
    background:
        radial-gradient(circle at 50% 10%, rgba(56, 213, 232, .16), transparent 42%),
        linear-gradient(145deg, rgba(255, 255, 255, .12), rgba(255, 255, 255, .055));
    backdrop-filter: blur(18px);
    box-shadow: 0 24px 60px rgba(2, 6, 23, .28), inset 0 1px 0 rgba(255, 255, 255, .18);
    overflow: hidden;
}

.feature-hero-card::before {
    content: "";
    position: absolute;
    inset: -42%;
    background: conic-gradient(from 120deg, transparent, rgba(56, 213, 232, .22), transparent, rgba(168, 85, 247, .24), transparent);
    filter: blur(22px);
    opacity: .75;
    animation: rotateAura 24s linear infinite;
}

.feature-hero-visual {
    position: relative;
    min-height: 190px;
    display: grid;
    place-items: center;
    border-radius: 23px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, .14);
    background:
        radial-gradient(circle at 50% 54%, rgba(96, 165, 250, .28), transparent 42%),
        linear-gradient(135deg, rgba(8, 17, 31, .8), rgba(49, 46, 129, .55));
    isolation: isolate;
}

.feature-hero-visual::after {
    content: "";
    position: absolute;
    inset: 0;
    background:
        linear-gradient(rgba(255, 255, 255, .035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, .035) 1px, transparent 1px);
    background-size: 28px 28px;
    opacity: .75;
    z-index: -2;
}

.feature-hero-ring {
    position: absolute;
    width: 170px;
    height: 170px;
    border-radius: 999px;
    border: 1px solid rgba(125, 211, 252, .42);
    box-shadow: 0 0 44px rgba(56, 213, 232, .18);
    transform: rotate(-18deg) scaleX(1.18);
}

.feature-hero-ring::after {
    content: "";
    position: absolute;
    inset: 28px;
    border-radius: inherit;
    border: 1px solid rgba(168, 85, 247, .36);
    transform: rotate(54deg) scaleX(1.18);
}

.feature-hero-robot {
    position: relative;
    width: min(78%, 206px);
    aspect-ratio: 1;
    object-fit: contain;
    z-index: 1;
    border-radius: 26px;
    padding: .38rem;
    background: linear-gradient(135deg, rgba(255,255,255,.1), rgba(255,255,255,.04));
    border: 1px solid rgba(255, 255, 255, .14);
    filter: drop-shadow(0 22px 34px rgba(2, 6, 23, .38));
}

.feature-hero-chip {
    position: absolute;
    z-index: 2;
    display: inline-flex;
    align-items: center;
    gap: .38rem;
    max-width: 72%;
    padding: .46rem .62rem;
    color: #eef2ff;
    border: 1px solid rgba(255, 255, 255, .18);
    border-radius: 999px;
    background: rgba(7, 11, 24, .58);
    box-shadow: 0 14px 30px rgba(2, 6, 23, .22);
    backdrop-filter: blur(14px);
    font-size: .72rem;
    font-weight: 800;
    white-space: nowrap;
}

.feature-hero-chip i {
    color: currentColor;
    font-size: .9rem;
}

.feature-hero-chip.chip-top {
    top: .75rem;
    left: .75rem;
}

.feature-hero-chip.chip-bottom {
    right: .75rem;
    bottom: .75rem;
}

.feature-hero-meta {
    position: relative;
    display: block;
    margin-top: .8rem;
    padding: .2rem .2rem .15rem;
}

.feature-hero-meta span,
.feature-hero-meta b {
    display: block;
}

.feature-hero-meta span {
    color: #aebbd4;
    font-size: .76rem;
    font-weight: 700;
}

.feature-hero-meta b {
    color: #fff;
    font-size: 1.05rem;
}

.feature-workspace .feature-panel {
    border: 1px solid rgba(15, 23, 42, .08);
    border-radius: 26px;
    background: rgba(255, 255, 255, .84);
    box-shadow: 0 18px 55px rgba(15, 23, 42, .08);
    backdrop-filter: blur(18px);
}

.feature-workspace .nav-tabs {
    gap: .4rem;
    border-bottom: 0;
    padding: .32rem;
    border-radius: 16px;
    background: #f1f5f9;
}

.feature-workspace .nav-tabs .nav-link {
    border: 0;
    margin: 0;
    border-radius: 12px;
}

.feature-workspace .nav-tabs .nav-link.active {
    color: var(--primary);
    background: #fff;
    box-shadow: 0 8px 22px rgba(15, 23, 42, .07);
}

.feature-workspace #dropZone {
    border-color: rgba(79, 70, 229, .24) !important;
    background: linear-gradient(135deg, rgba(79, 70, 229, .045), rgba(56, 213, 232, .06));
}

.feature-workspace #chatArea {
    border-radius: 20px;
    margin-inline: .75rem;
    background:
        radial-gradient(circle at 12% 8%, rgba(79, 70, 229, .08), transparent 28%),
        #f8fafc !important;
}

.feature-workspace .chat-bubble-ai {
    background: rgba(255, 255, 255, .94);
}

.feature-workspace .chat-bubble,
.premium-result .chat-bubble,
.history-card,
.history-result,
.doc-chat-card {
    overflow-wrap: anywhere;
    word-break: break-word;
}

.feature-workspace .quick-actions .btn {
    min-height: 34px;
}

.feature-summarize .feature-kicker,
.feature-summarize .feature-hero-chip {
    color: #e0e7ff;
}

.feature-quiz .feature-kicker,
.feature-quiz .feature-hero-chip {
    color: #d1fae5;
}

.feature-plan .feature-kicker,
.feature-plan .feature-hero-chip {
    color: #fef3c7;
}

.feature-history .feature-kicker,
.feature-history .feature-hero-chip {
    color: #ffe4e6;
}

.history-toolbar .history-filter {
    width: 160px;
}

.history-delete-banner {
    padding: .75rem 1rem;
    border-radius: 14px;
    border: 1px solid rgba(239, 68, 68, .25);
    background: rgba(239, 68, 68, .08);
}

.history-card {
    overflow: hidden;
}

.history-prompt,
.history-result {
    border-radius: 16px;
    background: #f8fafc;
    border: 1px solid rgba(15, 23, 42, .06);
    line-height: 1.7;
}

.history-prompt {
    padding: .78rem .9rem;
    color: var(--text-muted);
    font-size: .86rem;
}

.history-result {
    padding: 1rem;
    font-size: .9rem;
    overflow-wrap: anywhere;
}

.history-result .quiz-card {
    background: rgba(255, 255, 255, .9);
}

.history-steps {
    display: grid;
    gap: .65rem;
    margin: .7rem 0;
}

.history-step {
    display: grid;
    gap: .2rem;
    padding: .8rem .9rem;
    border-radius: 14px;
    background: rgba(79, 70, 229, .045);
    border: 1px solid rgba(79, 70, 229, .09);
}

.history-step b {
    color: var(--primary);
}

.history-step span {
    color: var(--text-muted);
}

.history-step em {
    width: fit-content;
    color: var(--accent);
    font-style: normal;
    font-size: .76rem;
    font-weight: 800;
}

.history-warning {
    padding: .7rem .85rem;
    border-radius: 12px;
    color: var(--warning);
    background: rgba(245, 158, 11, .1);
    border: 1px solid rgba(245, 158, 11, .22);
    font-size: .84rem;
    font-weight: 700;
}

.history-json {
    margin: 0;
    white-space: pre-wrap;
    color: var(--text-muted);
}

.history-empty,
.history-loading {
    padding: 3rem 1rem;
    text-align: center;
    color: var(--text-muted);
    border-radius: 24px;
    border: 1px solid rgba(15, 23, 42, .08);
    background: rgba(255, 255, 255, .72);
    box-shadow: 0 18px 45px rgba(15, 23, 42, .06);
    backdrop-filter: blur(18px);
}

@keyframes rotateAura {
    to {
        transform: rotate(360deg);
    }
}

@keyframes floatCard {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-12px);
    }
}

@keyframes featurePulse {
    0% {
        box-shadow: 0 0 0 0 rgba(96, 165, 250, .34);
        transform: translateY(0);
    }
    45% {
        box-shadow: 0 0 0 9px rgba(96, 165, 250, .12);
        transform: translateY(-1px);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(96, 165, 250, 0);
        transform: translateY(0);
    }
}

@media (max-width: 1100px) {
    .nav-links-desktop {
        display: none !important;
    }

    .mobile-toggle {
        display: inline-flex !important;
        align-items: center;
        justify-content: center;
        flex: 0 0 auto;
        margin-left: auto;
    }

    .hero-layout {
        grid-template-columns: 1fr;
    }

    .hero-visual {
        min-height: 390px;
    }

    .hero-image-stage {
        margin-inline: auto;
    }

    .orb-stage {
        position: relative;
        inset: auto;
        width: min(100%, 620px);
        margin-inline: auto;
    }

    .problem-grid,
    .feature-grid,
    .uts-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .workspace-shell {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 760px) {
    .navbar-main .container {
        width: calc(100% - 1.25rem);
        max-width: 1180px;
    }

    .navbar-brand-custom {
        font-size: 1.12rem;
        min-width: 0;
    }

    .mobile-toggle {
        display: inline-flex !important;
        align-items: center;
        justify-content: center;
        flex: 0 0 auto;
        margin-left: auto;
    }

    .home-premium {
        margin-top: -1rem;
    }

    .premium-hero {
        min-height: auto;
    }

    .hero-layout {
        padding: 2rem 0 3rem;
        min-width: 0;
    }

    .hero-copy {
        min-width: 0;
    }

    .hero-kicker {
        width: 100%;
        max-width: 100%;
        align-items: flex-start;
        white-space: normal;
        line-height: 1.45;
        font-size: .74rem;
    }

    .hero-subtitle {
        max-width: 100%;
        overflow-wrap: anywhere;
    }

    .hero-mini-stats,
    .problem-grid,
    .feature-grid,
    .uts-grid {
        grid-template-columns: 1fr;
    }

    .hero-visual {
        min-height: 360px;
    }

    .hero-image-stage {
        border-radius: 26px;
    }

    .orb-stage {
        height: 330px;
        border-radius: 26px;
    }

    .floating-asset {
        transform: scale(.88);
        transform-origin: center;
    }

    .asset-book {
        left: -.45rem;
        top: 1.2rem;
    }

    .asset-doc {
        right: -.45rem;
        top: 5.5rem;
    }

    .asset-quiz {
        left: -.2rem;
        bottom: 4.2rem;
    }

    .asset-chat {
        right: -.2rem;
        bottom: 1.2rem;
    }

    .section-heading {
        display: block;
    }

    .section-heading p {
        margin-top: .7rem;
    }

    .premium-section {
        padding: 3rem 0;
    }

    .quick-actions {
        display: grid;
        grid-template-columns: 1fr;
    }

    .quick-actions .d-flex {
        width: 100%;
        border-left: 0 !important;
        padding-left: 0 !important;
    }

    .feature-workspace {
        margin-top: -.5rem;
    }

    .feature-page-hero {
        display: block;
        border-radius: 22px;
    }

    .feature-hero-card {
        width: 100%;
        min-width: 0;
        margin-top: 1rem;
    }

    .feature-hero-visual {
        min-height: 210px;
    }

    .feature-hero-robot {
        width: min(46vw, 170px);
    }

    .feature-workspace .input-group {
        display: grid;
        gap: .6rem;
    }

    .feature-workspace .input-group .form-control,
    .feature-workspace .input-group .btn {
        width: 100%;
        border-radius: 12px !important;
    }
}

@media (prefers-reduced-motion: reduce) {
    .cursor-glow,
    .orb-stage::before,
    .feature-hero-card::before,
    .floating-asset {
        animation: none !important;
    }
}

/* ===== BRAND + AUTH ===== */
.brand-logo-mark {
    padding: 0;
    overflow: visible;
    background: transparent;
    border-radius: 0;
    box-shadow: none;
    filter: drop-shadow(0 10px 16px rgba(79, 70, 229, .24));
}

.brand-logo-mark img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: contain;
}

.nav-auth-cta {
    color: #fff !important;
    background: linear-gradient(135deg, #2563eb, #7c3aed);
    font-weight: 700;
    box-shadow: 0 14px 30px rgba(79, 70, 229, .14);
}

.nav-auth-cta:hover {
    color: #fff !important;
    transform: translateY(-1px);
}

.nav-auth-button {
    border: 0;
    background: transparent;
}

.nav-user-pill,
.nav-user-mobile {
    display: inline-flex;
    align-items: center;
    gap: .42rem;
    border-radius: 999px;
    border: 1px solid rgba(79, 70, 229, .14);
    background: rgba(79, 70, 229, .07);
    color: var(--primary);
    font-weight: 700;
    font-size: .82rem;
    padding: .36rem .58rem .36rem .38rem;
    text-decoration: none;
}

.nav-user-pill:hover,
.nav-user-mobile:hover,
.nav-user-pill.active,
.nav-user-mobile.active {
    color: var(--primary);
    background: rgba(79, 70, 229, .12);
}

.nav-user-pill img,
.nav-user-mobile img {
    width: 26px;
    height: 26px;
    border-radius: 999px;
    object-fit: cover;
}

.nav-user-pill {
    max-width: 112px;
}

.nav-user-name {
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.nav-user-mobile {
    width: 100%;
    margin: .35rem 0;
    border-radius: 12px;
}

.nav-session-compact {
    display: none;
    align-items: center;
    gap: .38rem;
}

.nav-icon-button {
    width: 38px;
    height: 38px;
    display: inline-grid;
    place-items: center;
    border: 1px solid rgba(79, 70, 229, .14);
    border-radius: 12px;
    background: rgba(79, 70, 229, .08);
    color: var(--primary);
    text-decoration: none;
    transition: transform .2s ease, background .2s ease, border-color .2s ease;
}

.nav-logout-button {
    border-radius: 12px;
}

.nav-icon-button:hover,
.nav-icon-button.active {
    color: var(--primary);
    background: rgba(79, 70, 229, .14);
    transform: translateY(-1px);
}

.nav-icon-button img {
    width: 28px;
    height: 28px;
    border-radius: 999px;
    object-fit: cover;
}

.nav-icon-danger {
    color: var(--danger);
    background: rgba(239, 68, 68, .08);
    border-color: rgba(239, 68, 68, .16);
}

.nav-icon-danger:hover {
    color: var(--danger);
    background: rgba(239, 68, 68, .14);
}

.auth-shell {
    width: min(1120px, 100%);
    margin: 1.5rem auto 3rem;
    display: grid;
    grid-template-columns: minmax(0, .92fr) minmax(380px, .72fr);
    gap: 1.25rem;
    align-items: stretch;
}

.auth-visual-panel,
.auth-card {
    position: relative;
    overflow: hidden;
    border-radius: 28px;
    border: 1px solid rgba(148, 163, 184, .2);
    box-shadow: 0 24px 70px rgba(15, 23, 42, .12);
}

.auth-visual-panel {
    min-height: 610px;
    padding: clamp(2rem, 4vw, 3.5rem);
    color: #f8fafc;
    background:
        radial-gradient(circle at 26% 18%, rgba(56, 213, 232, .2), transparent 18rem),
        radial-gradient(circle at 85% 76%, rgba(168, 85, 247, .24), transparent 22rem),
        linear-gradient(135deg, #071020 0%, #111936 48%, #211344 100%);
    isolation: isolate;
}

.auth-visual-panel::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
    background-size: 46px 46px;
    mask-image: radial-gradient(circle at 50% 40%, #000 0%, transparent 75%);
    z-index: -1;
}

.auth-visual-panel::after {
    content: "";
    position: absolute;
    right: -5rem;
    bottom: -6rem;
    width: 19rem;
    height: 19rem;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, .12);
    background: radial-gradient(circle, rgba(96, 165, 250, .2), transparent 68%);
    z-index: -1;
}

.auth-logo-large {
    width: 118px;
    height: 118px;
    border-radius: 999px;
    margin-bottom: 1.45rem;
    overflow: hidden;
    background:
        radial-gradient(circle at 52% 45%, rgba(56, 213, 232, .26), transparent 48%),
        linear-gradient(135deg, rgba(255, 255, 255, .12), rgba(255, 255, 255, .04));
    border: 1px solid rgba(255, 255, 255, .16);
    box-shadow: 0 24px 44px rgba(2, 6, 23, .26), inset 0 1px 0 rgba(255, 255, 255, .18);
    filter: none;
    display: grid;
    place-items: center;
}

.auth-logo-large img {
    width: 96%;
    height: 96%;
    display: block;
    object-fit: contain;
    border-radius: 999px;
    filter: drop-shadow(0 16px 26px rgba(2, 6, 23, .24));
}

.auth-kicker {
    display: inline-flex;
    color: #bfdbfe;
    background: rgba(255, 255, 255, .08);
    border: 1px solid rgba(255, 255, 255, .14);
    border-radius: 999px;
    padding: .45rem .72rem;
    font-size: .78rem;
    font-weight: 800;
}

.auth-visual-panel h1 {
    max-width: 620px;
    margin: 1rem 0 1rem;
    font-size: clamp(2.4rem, 5vw, 4.7rem);
    line-height: .96;
    font-weight: 900;
    letter-spacing: 0;
}

.auth-visual-panel p {
    max-width: 560px;
    color: #b8c5da;
    font-size: 1.03rem;
    line-height: 1.75;
}

.auth-feature-list {
    display: flex;
    flex-wrap: wrap;
    gap: .7rem;
    margin-top: 1.5rem;
}

.auth-feature-list span {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    color: #e2e8f0;
    background: rgba(255, 255, 255, .08);
    border: 1px solid rgba(255, 255, 255, .14);
    border-radius: 999px;
    padding: .58rem .82rem;
    font-weight: 700;
    font-size: .86rem;
}

.auth-card {
    padding: clamp(1.35rem, 3vw, 2rem);
    background:
        radial-gradient(circle at 92% 0%, rgba(79, 70, 229, .09), transparent 16rem),
        rgba(255, 255, 255, .94);
    backdrop-filter: blur(18px);
}

.auth-card-header h2 {
    margin: 0 0 .4rem;
    font-size: clamp(1.65rem, 3vw, 2.2rem);
    font-weight: 900;
    letter-spacing: 0;
}

.auth-card-header p {
    color: var(--text-muted);
    margin-bottom: 1.2rem;
    line-height: 1.6;
}

.btn-google {
    width: 100%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .65rem;
    border-radius: 14px;
    border: 1px solid var(--border);
    background: #fff;
    color: #0f172a;
    padding: .78rem 1rem;
    text-decoration: none;
    font-weight: 800;
    box-shadow: 0 10px 30px rgba(15, 23, 42, .06);
    transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
}

.btn-google:hover {
    color: #0f172a;
    transform: translateY(-1px);
    border-color: rgba(79, 70, 229, .24);
    box-shadow: 0 16px 40px rgba(15, 23, 42, .1);
}

.google-mark {
    width: 28px;
    height: 28px;
    display: grid;
    place-items: center;
    border-radius: 999px;
    background: #fff;
    border: 1px solid rgba(148, 163, 184, .28);
    box-shadow: 0 3px 10px rgba(15, 23, 42, .05);
}

.google-mark img {
    width: 18px;
    height: 18px;
    display: block;
}

.auth-provider-note {
    margin-top: .65rem;
    padding: .72rem .85rem;
    border-radius: 12px;
    border: 1px solid rgba(245, 158, 11, .24);
    background: rgba(245, 158, 11, .08);
    color: #92400e;
    font-size: .82rem;
    line-height: 1.55;
    font-weight: 650;
}

.auth-divider {
    display: flex;
    align-items: center;
    gap: .85rem;
    margin: 1.25rem 0;
    color: var(--text-muted);
    font-size: .82rem;
    font-weight: 700;
}

.auth-divider::before,
.auth-divider::after {
    content: "";
    height: 1px;
    flex: 1;
    background: var(--border);
}

.auth-form .form-control {
    min-height: 48px;
}

.auth-check {
    display: inline-flex;
    align-items: center;
    gap: .45rem;
    color: var(--text-muted);
    font-size: .9rem;
    font-weight: 600;
}

.auth-check input {
    width: 16px;
    height: 16px;
    accent-color: var(--primary);
}

.auth-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 800;
    font-size: .9rem;
}

.auth-link:hover {
    text-decoration: underline;
}

.auth-small-note {
    color: var(--text-muted);
    font-size: .82rem;
}

.profile-shell {
    width: min(1120px, 100%);
    margin: 1.5rem auto 3rem;
}

.profile-hero {
    display: flex;
    align-items: center;
    gap: 1.35rem;
    padding: clamp(1.35rem, 3vw, 2rem);
    border-radius: 28px;
    color: #f8fafc;
    background:
        radial-gradient(circle at 10% 0%, rgba(56, 213, 232, .22), transparent 16rem),
        radial-gradient(circle at 86% 82%, rgba(168, 85, 247, .24), transparent 22rem),
        linear-gradient(135deg, #071020 0%, #111936 48%, #211344 100%);
    border: 1px solid rgba(255, 255, 255, .14);
    box-shadow: 0 24px 70px rgba(15, 23, 42, .16);
    overflow: hidden;
    position: relative;
}

.profile-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        linear-gradient(rgba(255, 255, 255, .04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, .04) 1px, transparent 1px);
    background-size: 46px 46px;
    mask-image: radial-gradient(circle at 42% 44%, #000 0%, transparent 78%);
    pointer-events: none;
}

.profile-avatar-xl {
    width: 104px;
    height: 104px;
    border-radius: 28px;
    display: grid;
    place-items: center;
    flex: 0 0 auto;
    background: linear-gradient(135deg, #38d5e8, #6366f1 52%, #a855f7);
    box-shadow: 0 20px 45px rgba(0, 0, 0, .24);
    position: relative;
    z-index: 1;
    overflow: hidden;
}

.profile-avatar-xl img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.profile-avatar-xl span {
    color: #fff;
    font-size: 3rem;
    font-weight: 900;
}

.profile-hero-copy {
    position: relative;
    z-index: 1;
}

.profile-hero-copy h1 {
    margin: .7rem 0 .45rem;
    font-size: clamp(2rem, 4vw, 3.6rem);
    line-height: 1;
    font-weight: 900;
    letter-spacing: 0;
}

.profile-hero-copy p {
    max-width: 620px;
    color: #b8c5da;
    line-height: 1.7;
    margin-bottom: .9rem;
}

.profile-meta {
    display: flex;
    flex-wrap: wrap;
    gap: .65rem;
}

.profile-meta span {
    display: inline-flex;
    align-items: center;
    gap: .45rem;
    border-radius: 999px;
    color: #e2e8f0;
    background: rgba(255, 255, 255, .08);
    border: 1px solid rgba(255, 255, 255, .14);
    padding: .5rem .75rem;
    font-weight: 700;
    font-size: .83rem;
}

.profile-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 1.2rem;
    margin-top: 1.2rem;
}

.profile-form-card {
    min-height: 100%;
}

.profile-password-box {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 18px;
    background: rgba(79, 70, 229, .045);
    border: 1px solid rgba(79, 70, 229, .12);
}

.profile-password-box p {
    color: var(--text-muted);
    margin-bottom: .9rem;
    font-size: .9rem;
}

.profile-side-card {
    border-radius: 28px;
    padding: 1.25rem;
    background: rgba(255, 255, 255, .94);
    border: 1px solid rgba(148, 163, 184, .2);
    box-shadow: 0 18px 55px rgba(15, 23, 42, .1);
    height: fit-content;
}

.profile-side-section + .profile-side-section {
    margin-top: 1.25rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--border);
}

.profile-side-section h3 {
    font-size: 1.05rem;
    font-weight: 900;
    margin-bottom: .85rem;
}

.profile-identity {
    display: grid;
    gap: .35rem;
    color: var(--text-muted);
    font-size: .9rem;
}

.profile-identity b {
    color: var(--text);
    font-size: 1rem;
}

.profile-action-link,
.profile-logout-button {
    width: 100%;
    display: flex;
    align-items: center;
    gap: .55rem;
    border-radius: 14px;
    padding: .75rem .85rem;
    margin-bottom: .5rem;
    border: 1px solid var(--border);
    background: #fff;
    color: var(--text);
    text-decoration: none;
    font-weight: 800;
    transition: transform .2s ease, border-color .2s ease, background .2s ease;
}

.profile-action-link:hover {
    color: var(--primary);
    border-color: rgba(79, 70, 229, .25);
    background: rgba(79, 70, 229, .04);
    transform: translateY(-1px);
}

.profile-logout-button {
    color: var(--danger);
    border-color: rgba(239, 68, 68, .18);
    background: rgba(239, 68, 68, .04);
}

.profile-logout-button:hover {
    background: rgba(239, 68, 68, .09);
    transform: translateY(-1px);
}

@media (max-width: 991px) {
    .nav-session-compact {
        display: flex;
    }

    .nav-session-compact + .mobile-toggle {
        margin-left: .42rem !important;
    }

    .auth-shell {
        grid-template-columns: 1fr;
    }

    .auth-visual-panel {
        min-height: auto;
    }

    .profile-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 1180px) {
    .nav-links-desktop {
        display: none !important;
    }

    .mobile-toggle {
        display: inline-flex !important;
        align-items: center;
        justify-content: center;
        flex: 0 0 auto;
    }

    .nav-session-compact {
        display: flex;
    }

    .nav-session-compact + .mobile-toggle {
        margin-left: .42rem !important;
    }
}

@media (min-width: 1181px) {
    .nav-links-desktop {
        display: flex !important;
    }

    .mobile-toggle,
    .nav-session-compact {
        display: none !important;
    }
}

@media (max-width: 640px) {
    .auth-shell {
        margin-top: .5rem;
    }

    .auth-visual-panel,
    .auth-card {
        border-radius: 22px;
    }

    .auth-feature-list {
        display: grid;
        grid-template-columns: 1fr;
    }

    .profile-hero {
        display: block;
    }

    .profile-avatar-xl {
        width: 86px;
        height: 86px;
        border-radius: 22px;
        margin-bottom: 1rem;
    }

    .profile-side-card,
    .auth-card.profile-form-card {
        border-radius: 22px;
    }
}

.quiz-section-title {
    display: flex;
    align-items: center;
    gap: .45rem;
    margin: 1rem 0 .65rem;
    padding: .6rem .78rem;
    border-radius: 12px;
    border: 1px solid rgba(245, 158, 11, .22);
    background: rgba(245, 158, 11, .09);
    color: var(--warning);
    font-size: .86rem;
    font-weight: 850;
}

.quiz-section-title:first-child {
    margin-top: 0;
}

.quiz-section-title.essay {
    border-color: rgba(6, 182, 212, .24);
    background: rgba(6, 182, 212, .09);
    color: var(--accent);
}

[data-theme="dark"] body {
    background: #0b1020;
}

[data-theme="dark"] #particles-canvas {
    opacity: .28;
}

[data-theme="dark"] .navbar-main {
    background: rgba(15, 23, 42, .82);
}

[data-theme="dark"] .nav-primary-group {
    border-color: rgba(148, 163, 184, .18);
    background: rgba(15, 23, 42, .7);
    box-shadow: 0 14px 32px rgba(0, 0, 0, .2);
}

[data-theme="dark"] .nav-utility-button,
[data-theme="dark"] .theme-toggle-button,
[data-theme="dark"] .nav-user-pill,
[data-theme="dark"] .nav-icon-button {
    border-color: rgba(148, 163, 184, .22);
    background: rgba(15, 23, 42, .82);
}

[data-theme="dark"] .nav-utility-button:hover,
[data-theme="dark"] .nav-utility-button.active,
[data-theme="dark"] .nav-user-pill:hover,
[data-theme="dark"] .nav-user-pill.active,
[data-theme="dark"] .nav-icon-button:hover,
[data-theme="dark"] .nav-icon-button.active {
    color: var(--primary-light);
    border-color: rgba(129, 140, 248, .36);
    background: rgba(129, 140, 248, .14);
}

[data-theme="dark"] .nav-docs-link.active {
    color: #fff;
    border-color: transparent;
    background: linear-gradient(135deg, #6366f1 0%, #7c3aed 54%, #0891b2 100%);
}

[data-theme="dark"] .nav-icon-danger {
    color: #fda4af;
    background: rgba(244, 63, 94, .12);
    border-color: rgba(251, 113, 133, .24);
}

[data-theme="dark"] .nav-dropdown {
    background: #111827;
}

[data-theme="dark"] .nav-link-custom:hover,
[data-theme="dark"] .nav-link-custom.active {
    background: rgba(129, 140, 248, .14);
}

[data-theme="dark"] .home-premium,
[data-theme="dark"] .premium-section {
    background:
        radial-gradient(circle at 16% 34rem, rgba(96, 165, 250, .12), transparent 26rem),
        radial-gradient(circle at 86% 58rem, rgba(168, 85, 247, .12), transparent 28rem),
        #0b1020;
}

[data-theme="dark"] .premium-card,
[data-theme="dark"] .auth-card,
[data-theme="dark"] .profile-side-card {
    background: rgba(17, 24, 39, .9);
    border-color: rgba(148, 163, 184, .22);
    color: var(--text);
}

[data-theme="dark"] .premium-card p,
[data-theme="dark"] .section-heading p,
[data-theme="dark"] .auth-card-header p,
[data-theme="dark"] .auth-small-note,
[data-theme="dark"] .text-muted {
    color: var(--text-muted) !important;
}

[data-theme="dark"] .feature-workspace::before {
    background:
        radial-gradient(circle at 15% 14%, rgba(96, 165, 250, .14), transparent 22rem),
        radial-gradient(circle at 88% 8%, rgba(168, 85, 247, .13), transparent 26rem),
        linear-gradient(180deg, #0b1020 0%, #111827 68%, #0b1020 100%);
}

[data-theme="dark"] .feature-workspace .feature-panel {
    background: rgba(17, 24, 39, .84);
    border-color: rgba(148, 163, 184, .2);
    box-shadow: 0 20px 58px rgba(0, 0, 0, .26);
}

[data-theme="dark"] .feature-workspace .nav-tabs {
    background: rgba(15, 23, 42, .9);
}

[data-theme="dark"] .feature-workspace .nav-tabs .nav-link.active {
    background: rgba(30, 41, 59, .96);
    color: var(--primary-light);
}

[data-theme="dark"] .feature-workspace #dropZone {
    background: linear-gradient(135deg, rgba(129, 140, 248, .1), rgba(34, 211, 238, .08));
}

[data-theme="dark"] .feature-workspace #chatArea {
    background:
        radial-gradient(circle at 12% 8%, rgba(129, 140, 248, .1), transparent 28%),
        #0f172a !important;
}

[data-theme="dark"] .feature-workspace .chat-bubble-ai,
[data-theme="dark"] .chat-bubble-ai,
[data-theme="dark"] .quiz-card,
[data-theme="dark"] .web-source-item,
[data-theme="dark"] .history-prompt,
[data-theme="dark"] .history-result,
[data-theme="dark"] .history-empty,
[data-theme="dark"] .history-loading,
[data-theme="dark"] .material-item {
    background: rgba(17, 24, 39, .92);
    border-color: rgba(148, 163, 184, .22);
    color: var(--text);
}

[data-theme="dark"] .history-result .quiz-card {
    background: rgba(15, 23, 42, .9);
}

[data-theme="dark"] .doc-chat-card,
[data-theme="dark"] .profile-password-box {
    background: rgba(15, 23, 42, .82);
    border-color: rgba(148, 163, 184, .2);
}

[data-theme="dark"] .btn-google,
[data-theme="dark"] .profile-action-link {
    background: #0f172a;
    color: var(--text);
    border-color: var(--border);
}

[data-theme="dark"] .swal2-popup {
    background: #111827;
    color: var(--text);
}

[data-theme="dark"] .swal2-title,
[data-theme="dark"] .swal2-html-container {
    color: var(--text);
}

/* Strong dark-mode pass for dashboard/workspace surfaces. */
[data-theme="dark"] .main-full,
[data-theme="dark"] .home-premium {
    background:
        radial-gradient(circle at 82% 18%, rgba(37, 99, 235, .14), transparent 25rem),
        radial-gradient(circle at 10% 70%, rgba(124, 58, 237, .12), transparent 26rem),
        #050816 !important;
}

[data-theme="dark"] .premium-section,
[data-theme="dark"] .workspace-section {
    background:
        radial-gradient(circle at 86% 10%, rgba(59, 130, 246, .12), transparent 22rem),
        radial-gradient(circle at 14% 86%, rgba(139, 92, 246, .1), transparent 25rem),
        linear-gradient(180deg, #050816 0%, #0b1020 58%, #050816 100%) !important;
}

[data-theme="dark"] .section-heading h2,
[data-theme="dark"] .workspace-panel .section-title,
[data-theme="dark"] .premium-card h3,
[data-theme="dark"] .stat-value,
[data-theme="dark"] .form-label,
[data-theme="dark"] .fw-bold {
    color: #f8fafc !important;
}

[data-theme="dark"] .section-heading p,
[data-theme="dark"] .workspace-panel p,
[data-theme="dark"] .stat-label,
[data-theme="dark"] .premium-card p,
[data-theme="dark"] .form-text,
[data-theme="dark"] .small,
[data-theme="dark"] .upload-drop .text-muted {
    color: #cbd5e1 !important;
}

[data-theme="dark"] .workspace-panel,
[data-theme="dark"] .stat-card,
[data-theme="dark"] .stat-card.bg-white,
[data-theme="dark"] .materials-premium {
    background:
        radial-gradient(circle at 12% 0%, rgba(129, 140, 248, .08), transparent 16rem),
        linear-gradient(180deg, rgba(17, 24, 39, .96), rgba(10, 15, 30, .94)) !important;
    border-color: rgba(148, 163, 184, .26) !important;
    color: #f8fafc !important;
    box-shadow: 0 22px 70px rgba(0, 0, 0, .34) !important;
}

[data-theme="dark"] .workspace-panel .nav-tabs {
    background: rgba(15, 23, 42, .92) !important;
    border: 1px solid rgba(148, 163, 184, .18);
}

[data-theme="dark"] .workspace-panel .nav-tabs .nav-link {
    color: #cbd5e1 !important;
}

[data-theme="dark"] .workspace-panel .nav-tabs .nav-link.active {
    background: linear-gradient(135deg, rgba(99, 102, 241, .24), rgba(34, 211, 238, .14)) !important;
    color: #e0e7ff !important;
    border: 1px solid rgba(165, 180, 252, .3) !important;
    box-shadow: 0 10px 24px rgba(0, 0, 0, .24), inset 0 1px 0 rgba(255, 255, 255, .08);
}

[data-theme="dark"] .workspace-panel .nav-tabs .nav-link:not(.active):hover {
    background: rgba(129, 140, 248, .12);
    color: #eef2ff !important;
}

[data-theme="dark"] .workspace-panel .form-control,
[data-theme="dark"] .workspace-panel .form-select,
[data-theme="dark"] .quick-actions .form-control,
[data-theme="dark"] .quick-actions .form-select {
    background: #0f172a !important;
    color: #f8fafc !important;
    border-color: rgba(148, 163, 184, .34) !important;
}

[data-theme="dark"] .workspace-panel .form-control::placeholder {
    color: #94a3b8 !important;
    opacity: 1;
}

[data-theme="dark"] .workspace-panel .form-control:focus,
[data-theme="dark"] .workspace-panel .form-select:focus {
    border-color: #818cf8 !important;
    box-shadow: 0 0 0 4px rgba(129, 140, 248, .18) !important;
}

[data-theme="dark"] .upload-drop,
[data-theme="dark"] .materials-empty-state {
    background:
        radial-gradient(circle at 12% 12%, rgba(34, 211, 238, .08), transparent 14rem),
        rgba(15, 23, 42, .82) !important;
    border-color: rgba(129, 140, 248, .26) !important;
    color: #f8fafc;
}

[data-theme="dark"] .result-box.premium-result {
    background:
        radial-gradient(circle at 18% 10%, rgba(34, 211, 238, .12), transparent 28%),
        radial-gradient(circle at 85% 90%, rgba(168, 85, 247, .1), transparent 32%),
        linear-gradient(145deg, #071020 0%, #0b1020 100%) !important;
    border-color: rgba(148, 163, 184, .18) !important;
    color: #e2e8f0 !important;
    scrollbar-color: rgba(148, 163, 184, .52) rgba(15, 23, 42, .92);
}

[data-theme="dark"] .result-empty b,
[data-theme="dark"] .doc-chat-empty b {
    color: #f8fafc !important;
}

[data-theme="dark"] .empty-state-desc,
[data-theme="dark"] .result-empty p,
[data-theme="dark"] .doc-chat-empty > span {
    color: #cbd5e1 !important;
}

[data-theme="dark"] .hint-pill {
    color: #dbeafe !important;
    background: rgba(30, 41, 59, .72);
    border-color: rgba(148, 163, 184, .22);
}

[data-theme="dark"] .materials-empty-visual,
[data-theme="dark"] .materials-empty-icon {
    background: linear-gradient(180deg, rgba(30, 41, 59, .96), rgba(15, 23, 42, .9)) !important;
    border-color: rgba(129, 140, 248, .28) !important;
}

[data-theme="dark"] .materials-empty-text .fw-semibold {
    color: #f8fafc !important;
}

[data-theme="dark"] .quick-actions {
    color: #cbd5e1;
}

[data-theme="dark"] .btn-outline-primary {
    color: #a5b4fc !important;
    border-color: rgba(165, 180, 252, .7) !important;
}

[data-theme="dark"] .btn-outline-primary:hover {
    color: #0b1020 !important;
    background: #a5b4fc !important;
}

[data-theme="dark"] .btn-outline-warning {
    color: #fbbf24 !important;
    border-color: rgba(251, 191, 36, .72) !important;
}

[data-theme="dark"] .btn-outline-warning:hover {
    color: #0b1020 !important;
    background: #fbbf24 !important;
}

[data-theme="dark"] .badge-soft,
[data-theme="dark"] .badge-soft-cyan,
[data-theme="dark"] .badge-soft-warning,
[data-theme="dark"] .badge-soft-success {
    border: 1px solid rgba(255, 255, 255, .08);
}

[data-theme="dark"] .footer-main {
    background: #050816;
    border-top-color: rgba(148, 163, 184, .22);
}

[data-theme="dark"] .premium-btn.primary {
    color: #f8fafc;
    background: linear-gradient(135deg, #4f46e5, #0891b2);
    border: 1px solid rgba(191, 219, 254, .24);
    box-shadow: 0 18px 45px rgba(37, 99, 235, .24);
}

[data-theme="dark"] .premium-btn.secondary {
    background: rgba(15, 23, 42, .72);
    border-color: rgba(148, 163, 184, .28);
}

[data-theme="dark"] .feature-workspace .nav-tabs .nav-link.active {
    background: linear-gradient(135deg, rgba(99, 102, 241, .24), rgba(34, 211, 238, .14)) !important;
    color: #e0e7ff !important;
    border: 1px solid rgba(165, 180, 252, .3) !important;
}