/* ═══════════════════════════════════════════════════════════
   BRAHMASTRA — LANDING STYLES
   Premium Violet/Indigo Design System v2.0
═══════════════════════════════════════════════════════════ */

:root {
    --bg: #000000;
    --bg-elevated: #080808;
    --surface: rgba(10, 10, 10, 0.85);
    --border: rgba(255, 255, 255, 0.12);
    --text: #ffffff;
    --muted: #cbd5e1;

    /* Brand gradient: silver → white */
    --violet: #ffffff;
    --purple: #94a3b8;
    --gradient: linear-gradient(135deg, var(--violet), var(--purple));
    --gradient-text: linear-gradient(135deg, #ffffff, #94a3b8);

    /* Status */
    --green: #10b981;
    --amber: #fbbf24;
    --red: #f43f5e;

    /* UI tokens */
    --shadow: 0 8px 40px rgba(0, 0, 0, 0.65);
    --shadow-glow: 0 0 40px rgba(255, 255, 255, 0.12);
    --radius: 18px;
    --radius-sm: 12px;
    --max: 1140px;

    /* Easing */
    --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
    --dur-fast: 0.22s;
    --dur-med: 0.5s;
    --dur-slow: 0.8s;
}

/* ─── Reset ─────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
a { color: inherit; text-decoration: none; }

body {
    font-family: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.65;
    min-height: 100vh;
    overflow-x: hidden;
}

/* ─── Background mesh ───────────────────────────────────── */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    background:
        radial-gradient(ellipse 90% 60% at 15% -5%, rgba(255, 255, 255, 0.08), transparent 55%),
        radial-gradient(ellipse 70% 50% at 85% 5%, rgba(148, 163, 184, 0.06), transparent 50%),
        radial-gradient(ellipse 50% 40% at 50% 100%, rgba(255, 255, 255, 0.03), transparent 45%);
    pointer-events: none;
    z-index: 0;
}

/* Ambient orbs */
.ambient-orb {
    position: fixed;
    border-radius: 50%;
    filter: blur(90px);
    pointer-events: none;
    z-index: 0;
    animation: orb-drift 20s ease-in-out infinite;
}
.ambient-orb-1 {
    width: 500px; height: 500px;
    background: rgba(255, 255, 255, 0.04);
    top: -150px; left: -100px;
}
.ambient-orb-2 {
    width: 400px; height: 400px;
    background: rgba(148, 163, 184, 0.03);
    bottom: 5%; right: -120px;
    animation-delay: -8s; animation-duration: 24s;
}
@keyframes orb-drift {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(50px, 40px) scale(1.08); }
    66% { transform: translate(-30px, 60px) scale(0.94); }
}

/* ─── Container ──────────────────────────────────────────── */
.container {
    width: min(100% - 32px, var(--max));
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

/* ─── Glass card ─────────────────────────────────────────── */
.glass {
    background: var(--surface);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition:
        transform var(--dur-fast) var(--ease-out),
        border-color var(--dur-fast) ease,
        box-shadow var(--dur-fast) ease;
}
.glass:hover {
    border-color: rgba(255, 255, 255, 0.22);
    box-shadow: var(--shadow), var(--shadow-glow);
}

/* ─── Reveal animations ──────────────────────────────────── */
.reveal { opacity: 1; transform: none; }
html.js-enhanced .reveal:not(.is-visible) {
    opacity: 0;
    transform: translateY(30px);
    transition:
        opacity var(--dur-med) var(--ease-out),
        transform var(--dur-med) var(--ease-out);
}
html.js-enhanced .reveal.is-visible { opacity: 1; transform: translateY(0); }
.reveal-stagger.is-visible { transition-delay: calc(0.09s * var(--i, 0)); }

.hero-anim { opacity: 1; transform: none; }
html.js-enhanced body.page-loading .hero-anim {
    opacity: 0; transform: translateY(26px);
}
html.js-enhanced body.page-ready .hero-anim {
    opacity: 1; transform: translateY(0);
    transition:
        opacity var(--dur-slow) var(--ease-out),
        transform var(--dur-slow) var(--ease-out);
    transition-delay: var(--delay, 0s);
}

/* Logo float */
.logo-float { animation: logo-float 4.5s ease-in-out infinite; }
@keyframes logo-float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-7px); }
}

/* ─── Navbar ─────────────────────────────────────────────── */
.site-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 16px 0;
    background: rgba(4, 5, 8, 0.82);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    transition:
        top 0.4s cubic-bezier(0.22, 1, 0.36, 1),
        padding var(--dur-fast) var(--ease-out),
        background var(--dur-fast) ease,
        box-shadow var(--dur-fast) ease;
}
.site-nav.nav-scrolled {
    padding: 10px 0;
    background: rgba(4, 5, 8, 0.96);
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.4);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.brand-lockup {
    display: flex;
    align-items: center;
    gap: 11px;
    font-weight: 800;
    letter-spacing: 0.1em;
    font-size: 0.84rem;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.brand-logo { width: 34px; height: 34px; flex-shrink: 0; }

.nav-links {
    display: flex;
    align-items: center;
    gap: 4px;
    flex-wrap: wrap;
}
.nav-links a {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--muted);
    padding: 7px 14px;
    border-radius: 10px;
    transition: color var(--dur-fast) ease, background var(--dur-fast) ease, transform var(--dur-fast) var(--ease-out);
}
.nav-links a:hover {
    color: var(--text);
    background: rgba(255, 255, 255, 0.05);
    transform: translateY(-1px);
}

/* ─── Buttons ─────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 13px 24px;
    border-radius: var(--radius-sm);
    font-weight: 700;
    font-size: 0.92rem;
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition:
        transform var(--dur-fast) var(--ease-spring),
        box-shadow var(--dur-fast) ease,
        opacity var(--dur-fast) ease,
        border-color var(--dur-fast) ease;
    white-space: nowrap;
}
.btn::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(105deg, transparent 40%, rgba(255, 255, 255, 0.18) 50%, transparent 60%);
    transform: translateX(-130%);
    transition: transform 0.55s var(--ease-out);
}
.btn:hover::after { transform: translateX(130%); }
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: scale(0.97) translateY(0); }

.btn-primary {
    background: var(--gradient);
    color: #000000 !important;
    font-weight: 800;
    box-shadow: 0 4px 20px rgba(255, 255, 255, 0.35);
}
.btn-primary:hover { box-shadow: 0 8px 32px rgba(255, 255, 255, 0.5); }

.btn-outline {
    background: transparent;
    color: var(--text);
    border: 1px solid rgba(255, 255, 255, 0.14);
}
.btn-outline:hover { border-color: rgba(255, 255, 255, 0.4); background: rgba(255, 255, 255, 0.05); }

.btn-ghost {
    background: rgba(255, 255, 255, 0.04);
    color: var(--muted);
    border: 1px solid var(--border);
}
.btn.disabled { opacity: 0.4; pointer-events: none; }
.nav-cta { padding: 8px 18px !important; }

/* ─── Hero ────────────────────────────────────────────────── */
.hero {
    padding: 80px 0 64px;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: #cbd5e1;
    border: 1px solid rgba(255, 255, 255, 0.28);
    background: rgba(255, 255, 255, 0.08);
    padding: 7px 16px;
    border-radius: 999px;
    margin-bottom: 24px;
    animation: badge-pulse 3.5s ease-in-out infinite;
}
.hero-badge::before {
    content: "";
    width: 6px; height: 6px;
    background: var(--violet);
    border-radius: 50%;
    box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.4);
    animation: dot-blink 1.8s ease-in-out infinite;
}
@keyframes badge-pulse {
    0%, 100% { box-shadow: 0 0 0 rgba(255, 255, 255, 0); }
    50% { box-shadow: 0 0 20px rgba(255, 255, 255, 0.2); }
}
@keyframes dot-blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.hero h1 {
    font-size: clamp(2.2rem, 5.5vw, 3.8rem);
    font-weight: 800;
    line-height: 1.12;
    margin-bottom: 18px;
    background: linear-gradient(170deg, #ffffff 0%, #e2e8f0 60%, #cbd5e1 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    max-width: 560px;
    margin: 0 auto 36px;
    color: var(--muted);
    font-size: 1.08rem;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    margin-bottom: 56px;
}

/* Stats bar */
.hero-stats {
    display: flex;
    justify-content: center;
    gap: 0;
    margin: 0 auto 52px;
    max-width: 600px;
    background: rgba(10, 11, 16, 0.55);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.05);
    transition: border-color var(--dur-fast) ease, box-shadow var(--dur-fast) ease;
}
.hero-stats:hover {
    border-color: rgba(255, 255, 255, 0.3);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.5), 0 0 25px rgba(255, 255, 255, 0.15);
}
.hero-stat {
    flex: 1;
    padding: 22px 16px;
    text-align: center;
    border-right: 1px solid rgba(255, 255, 255, 0.06);
    transition: background-color var(--dur-fast) ease;
}
.hero-stat:hover {
    background-color: rgba(255, 255, 255, 0.02);
}
.hero-stat:last-child { border-right: none; }
.hero-stat-num {
    display: block;
    font-size: 1.6rem;
    font-weight: 800;
    background: linear-gradient(135deg, #ffffff 30%, #94a3b8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
}
.hero-stat-lbl {
    display: block;
    font-size: 0.75rem;
    color: var(--muted);
    font-weight: 600;
    margin-top: 4px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

/* Hero pillars */
.hero-pillars {
    padding: 8px;
    max-width: 900px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    text-align: left;
}
.pillar {
    padding: 24px;
    border-radius: var(--radius);
    background: rgba(10, 11, 16, 0.45);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    transition: transform var(--dur-fast) var(--ease-spring), border-color var(--dur-fast) ease, box-shadow var(--dur-fast) ease;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}
.pillar:hover {
    transform: translateY(-6px);
    border-color: rgba(255, 255, 255, 0.35);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4), 0 0 25px rgba(255, 255, 255, 0.15);
}
.pillar-icon { 
    font-size: 1.8rem; 
    display: inline-flex; 
    margin-bottom: 14px;
    width: 48px;
    height: 48px;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    transition: transform var(--dur-fast) var(--ease-spring);
}
.pillar:hover .pillar-icon {
    transform: scale(1.1) rotate(4deg);
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
}
.pillar strong {
    display: block;
    font-size: 1.05rem;
    margin-bottom: 8px;
    color: var(--text);
    font-weight: 700;
}
.pillar > span:last-child {
    font-size: 0.84rem;
    color: var(--muted);
    line-height: 1.55;
    display: block;
}

/* ─── Sections ────────────────────────────────────────────── */
section { padding: 64px 0; }

.section-head {
    text-align: center;
    margin-bottom: 44px;
}
.section-head h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 800;
    margin-bottom: 10px;
    background: linear-gradient(135deg, #fff 30%, #e2e8f0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.section-head p {
    color: var(--muted);
    max-width: 500px;
    margin: 0 auto;
}

/* ─── Exams grid ─────────────────────────────────────────── */
.exams-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 16px;
}
.exam-card {
    padding: 24px;
    border-radius: var(--radius);
    transition: transform var(--dur-fast) var(--ease-out), border-color var(--dur-fast) ease, box-shadow var(--dur-fast) ease;
    cursor: pointer;
}
.exam-card:hover:not(.exam-soon) {
    transform: translateY(-6px);
    border-color: rgba(255, 255, 255, 0.3);
    box-shadow: var(--shadow), 0 0 30px rgba(255, 255, 255, 0.15);
}
.exam-soon { opacity: 0.6; cursor: default; }
.exam-card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 14px;
}
.exam-icon {
    width: 46px; height: 46px;
    border-radius: 13px;
    font-size: 1.4rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
}
.exam-status {
    font-size: 0.65rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    padding: 5px 10px;
    border-radius: 999px;
    border: 1px solid var(--border);
}
.status-live {
    color: var(--green);
    border-color: rgba(255, 255, 255, 0.3);
    background: rgba(255, 255, 255, 0.08);
}
.status-soon { color: var(--muted); }
.exam-card h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 6px; }
.exam-card p { font-size: 0.84rem; color: var(--muted); line-height: 1.45; }
.exam-q-count {
    display: inline-block;
    margin-top: 10px;
    font-size: 0.72rem;
    font-weight: 700;
    color: #cbd5e1;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    padding: 3px 10px;
    border-radius: 999px;
}
.exam-fallback-msg {
    text-align: center;
    color: var(--muted);
    padding: 24px;
    grid-column: 1 / -1;
}

/* ─── Features ────────────────────────────────────────────── */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}
.feature-card {
    padding: 32px 28px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    border: 1px solid var(--border);
    transition: transform var(--dur-fast) var(--ease-spring), border-color var(--dur-fast) ease, box-shadow var(--dur-fast) ease;
}
.feature-card:hover {
    transform: translateY(-8px);
    border-color: rgba(255, 255, 255, 0.35);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.45), 0 0 30px rgba(255, 255, 255, 0.15);
}
.feature-icon {
    font-size: 2.2rem;
    margin-bottom: 18px;
    display: inline-flex;
    transition: transform var(--dur-fast) var(--ease-spring);
}
.feature-card:hover .feature-icon {
    transform: scale(1.2) rotate(-6deg);
}
.feature-card h3 {
    font-size: 1.15rem;
    margin-bottom: 10px;
    font-weight: 700;
    color: var(--text);
    letter-spacing: -0.01em;
}
.feature-card p {
    font-size: 0.9rem;
    color: var(--muted);
    line-height: 1.6;
}

/* ─── Steps ───────────────────────────────────────────────── */
.steps-list {
    display: grid;
    gap: 16px;
    max-width: 680px;
    margin: 0 auto;
}
.step-item {
    display: flex;
    gap: 20px;
    padding: 26px 28px;
    align-items: center;
    border: 1px solid var(--border);
    transition: transform var(--dur-fast) var(--ease-out), border-color var(--dur-fast) ease, box-shadow var(--dur-fast) ease;
}
.step-item:hover {
    transform: translateX(6px);
    border-color: rgba(255, 255, 255, 0.28);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}
.step-num {
    flex-shrink: 0;
    width: 44px; height: 44px;
    border-radius: 14px;
    background: var(--gradient);
    color: #fff;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    box-shadow: 0 4px 15px rgba(255, 255, 255, 0.35);
}
.step-item h4 {
    font-size: 1.05rem;
    margin-bottom: 6px;
    font-weight: 700;
    color: var(--text);
}
.step-item p {
    font-size: 0.9rem;
    color: var(--muted);
    line-height: 1.5;
}

/* ─── Download ────────────────────────────────────────────── */
.download-panel {
    padding: 40px;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 32px;
    align-items: start;
}
.download-divider {
    width: 1px;
    background: var(--border);
    align-self: stretch;
    min-height: 120px;
}
.download-panel h3 { font-size: 1.4rem; margin-bottom: 10px; font-weight: 800; }
.download-panel p { color: var(--muted); font-size: 0.92rem; margin-bottom: 20px; }
.download-btns { display: flex; flex-direction: column; gap: 10px; }
.download-note { font-size: 0.78rem; color: var(--muted); margin-top: 12px; }

/* ─── Support ─────────────────────────────────────────────── */
.support-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 14px;
}
.support-card {
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    transition:
        border-color var(--dur-fast) ease,
        transform var(--dur-fast) var(--ease-out),
        box-shadow var(--dur-fast) ease;
}
.support-card:hover {
    border-color: rgba(255, 255, 255, 0.4);
    transform: translateY(-5px);
    box-shadow: var(--shadow), var(--shadow-glow);
}
.support-card .label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.09em;
    color: #cbd5e1;
    font-weight: 700;
}
.support-card strong { font-size: 1rem; }
.support-meta { color: var(--muted); font-size: 0.84rem; }

.social-strip {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin-top: 30px;
}
.social-strip .reveal-stagger {
    opacity: 0;
    transform: translateY(14px) scale(0.88);
    transition:
        opacity var(--dur-med) var(--ease-out),
        transform var(--dur-med) var(--ease-spring);
}
.social-strip.is-visible .reveal-stagger {
    opacity: 1;
    transform: translateY(0) scale(1);
}
.social-btn {
    width: 32px; height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    transition: transform var(--dur-fast) var(--ease-spring);
    cursor: pointer;
    outline: none;
    padding: 0;
}
.social-svg-icon {
    width: 70%;
    height: 70%;
    transition: transform var(--dur-fast) var(--ease-spring), filter var(--dur-fast) ease;
}
.social-btn:hover .social-svg-icon {
    transform: translateY(-3px) scale(1.15);
    filter: drop-shadow(0 4px 12px rgba(255, 255, 255, 0.15));
}

/* ─── Footer ──────────────────────────────────────────────── */
.site-footer {
    padding: 36px 0 52px;
    border-top: 1px solid var(--border);
    margin-top: 28px;
    text-align: center;
    color: var(--muted);
    font-size: 0.85rem;
}
.site-footer .brand-lockup { justify-content: center; margin-bottom: 14px; }
.footer-disclaimer {
    max-width: 520px;
    margin: 0 auto 8px;
    line-height: 1.5;
}
.footer-copy { font-size: 0.8rem; opacity: 0.8; }

/* ─── Mobile nav ──────────────────────────────────────────── */
.mobile-nav-toggle {
    display: none;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--text);
    padding: 8px 13px;
    border-radius: 10px;
    font-weight: 700;
    cursor: pointer;
    font-size: 1rem;
}

/* ─── Responsive ──────────────────────────────────────────── */
@media (max-width: 768px) {
    .site-nav .container.nav-inner { position: relative; }
    .nav-links {
        display: none;
        position: absolute;
        top: calc(100% + 10px);
        left: 0; right: 0;
        flex-direction: column;
        align-items: stretch;
        background: rgba(4, 5, 8, 0.98);
        backdrop-filter: blur(16px);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        padding: 12px;
        box-shadow: var(--shadow);
        z-index: 200;
    }
    html.js-enhanced .nav-links {
        opacity: 0;
        transform: translateY(-10px);
        transition:
            opacity var(--dur-fast) ease,
            transform var(--dur-fast) var(--ease-out);
    }
    .nav-links.open { display: flex; opacity: 1; transform: translateY(0); }
    .nav-links a { width: 100%; text-align: left; padding: 10px 14px; }
    .mobile-nav-toggle { display: block; flex-shrink: 0; }

    .hero { padding: 56px 0 44px; }
    .hero h1 { font-size: clamp(1.9rem, 9vw, 2.6rem); }
    section { padding: 44px 0; }
    .hero-stats { flex-direction: row; }
    .download-panel { grid-template-columns: 1fr; }
    .download-divider { display: none; }
    .hero-pillars { grid-template-columns: 1fr; }
}

/* ─── Reduced motion ──────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    .reveal { opacity: 1; transform: none; }
    body.page-loading .hero-anim { opacity: 1; transform: none; }
}

/* ─── Sliding Collapsible Top Ad Container ─────────────────── */
.collapsible-ad-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 102px; /* 90px ad + 6px padding top/bottom */
    background: rgba(10, 10, 10, 0.96);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.65);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
    transform: translateY(-100%);
}
.collapsible-ad-container.expanded {
    transform: translateY(0);
}
.collapsible-ad-container .ad-content-wrapper {
    padding: 6px;
    width: 100%;
    max-width: 728px;
    min-height: 90px;
    display: flex;
    justify-content: center;
    align-items: center;
}
#ad-toggle-btn {
    position: absolute;
    bottom: -28px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(10, 10, 10, 0.96);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-top: none;
    border-radius: 0 0 10px 10px;
    color: #ffffff;
    padding: 4px 16px;
    font-size: 0.68rem;
    font-weight: 800;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    transition: background-color 0.2s, color 0.2s;
    z-index: 10000;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    outline: none;
}
#ad-toggle-btn:hover {
    background: #ffffff;
    color: #000000;
}
#ad-toggle-btn .toggle-icon {
    font-size: 0.62rem;
    transition: transform 0.3s ease;
    display: inline-block;
}
.collapsible-ad-container:not(.expanded) #ad-toggle-btn .toggle-icon {
    transform: rotate(180deg);
}

/* Mobile Collapsible Ad Unit Overrides */
@media (max-width: 768px) {
    .collapsible-ad-container {
        height: auto;
        min-height: 60px;
    }
    .collapsible-ad-container .ad-content-wrapper {
        padding: 4px;
        min-height: 50px;
        max-width: 100%;
        overflow: hidden;
    }
    .collapsible-ad-container ins.adsbygoogle {
        max-width: 100% !important;
        height: auto !important;
        overflow: hidden !important;
    }
}