/* ================================================
   Math Hub — Premium Frontend Styles
   ================================================ */
:root {
    --bg: #0d0524;
    --bg-elevated: #160a33;
    --bg-card: rgba(255, 255, 255, 0.045);
    --border: rgba(255, 255, 255, 0.1);
    --border-strong: rgba(255, 255, 255, 0.2);
    --text-primary: #ffffff;
    --text-secondary: rgba(235, 230, 255, 0.7);
    --text-muted: rgba(235, 230, 255, 0.48);

    /* Vibrant palette */
    --accent: #a855f7;
    --accent-hover: #9333ea;
    --accent-glow: rgba(168, 85, 247, 0.5);
    --pink: #ff4ecd;
    --cyan: #22d3ee;
    --orange: #fb923c;
    --lime: #a3e635;
    --success: #34d399;
    --danger: #fb7185;

    /* Gradients */
    --grad-main: linear-gradient(135deg, #ff4ecd 0%, #a855f7 45%, #22d3ee 100%);
    --grad-warm: linear-gradient(135deg, #fb923c, #ff4ecd);
    --grad-cool: linear-gradient(135deg, #22d3ee, #818cf8);
    --grad-fun: linear-gradient(135deg, #a855f7, #ec4899);

    --font-primary: 'Outfit', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 10px 34px rgba(88, 28, 135, 0.35);
    --shadow-lg: 0 28px 70px rgba(88, 28, 135, 0.5);
    --radius: 16px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 90px;
}

body {
    font-family: var(--font-primary);
    background-color: var(--bg);
    background-image:
        radial-gradient(circle at 15% 20%, rgba(168, 85, 247, 0.28), transparent 45%),
        radial-gradient(circle at 85% 15%, rgba(34, 211, 238, 0.22), transparent 45%),
        radial-gradient(circle at 75% 85%, rgba(255, 78, 205, 0.25), transparent 45%),
        radial-gradient(circle at 25% 90%, rgba(251, 146, 60, 0.18), transparent 45%);
    background-attachment: fixed;
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

::selection {
    background: var(--pink);
    color: #fff;
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}
::-webkit-scrollbar-track {
    background: var(--bg);
}
::-webkit-scrollbar-thumb {
    background: var(--grad-fun);
    border-radius: 8px;
    border: 2px solid var(--bg);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--grad-main);
}

/* Background Effects */
.bg-glow {
    position: fixed;
    top: -20%;
    left: -10%;
    width: 50vw;
    height: 50vw;
    background: radial-gradient(circle, rgba(168, 85, 247, 0.45) 0%, transparent 60%);
    filter: blur(100px);
    z-index: -1;
    pointer-events: none;
    animation: floatGlow 18s ease-in-out infinite;
}

.bg-glow-2 {
    position: fixed;
    bottom: -20%;
    right: -10%;
    width: 60vw;
    height: 60vw;
    background: radial-gradient(circle, rgba(34, 211, 238, 0.3) 0%, transparent 60%);
    filter: blur(120px);
    z-index: -1;
    pointer-events: none;
    animation: floatGlow 22s ease-in-out infinite reverse;
}

@keyframes floatGlow {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(8vw, 6vh) scale(1.15); }
    66% { transform: translate(-6vw, 4vh) scale(0.9); }
}

/* Floating decorative shapes */
.floaties {
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    overflow: hidden;
}
.floaty {
    position: absolute;
    font-size: clamp(1.8rem, 3vw, 3rem);
    opacity: 0.5;
    filter: drop-shadow(0 6px 16px rgba(0,0,0,0.3));
    animation: bob linear infinite;
}
@keyframes bob {
    0%   { transform: translateY(0) rotate(0deg); }
    50%  { transform: translateY(-28px) rotate(12deg); }
    100% { transform: translateY(0) rotate(0deg); }
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 5%;
    background: rgba(11, 11, 16, 0.72);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 1.4rem;
    font-weight: 800;
    letter-spacing: 0.5px;
    background: var(--grad-main);
    background-size: 200% auto;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    text-decoration: none;
    animation: hueShift 6s linear infinite;
}

@keyframes hueShift {
    to { background-position: 200% center; }
}

.nav-brand .brand-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 10px;
    background: var(--grad-fun);
    -webkit-text-fill-color: #fff;
    color: #fff;
    font-size: 1.05rem;
    font-weight: 800;
    box-shadow: 0 4px 16px var(--accent-glow);
    animation: wobble 5s ease-in-out infinite;
}

@keyframes wobble {
    0%, 100% { transform: rotate(0deg); }
    25% { transform: rotate(-8deg); }
    75% { transform: rotate(8deg); }
}

.nav-links {
    display: flex;
    gap: 28px;
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.25s;
}

.nav-link:hover {
    color: #fff;
}

@media (max-width: 640px) {
    .nav-links {
        gap: 16px;
    }
    .nav-links .nav-link {
        display: none;
    }
    .navbar {
        padding: 14px 5%;
    }
}

/* Buttons */
.btn {
    padding: 12px 26px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.98rem;
    text-decoration: none;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
    border: none;
    font-family: var(--font-primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    white-space: nowrap;
}

.btn:active {
    transform: translateY(0) scale(0.99);
}

.btn-primary {
    background: var(--grad-main);
    background-size: 200% auto;
    color: #fff;
    box-shadow: 0 8px 26px var(--accent-glow);
    animation: hueShift 5s linear infinite;
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.03);
    box-shadow: 0 14px 38px var(--accent-glow);
}

.btn-outline {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-strong);
    color: var(--text-primary);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.07);
    border-color: rgba(255, 255, 255, 0.28);
    transform: translateY(-2px);
}

.btn-lg {
    padding: 15px 34px;
    font-size: 1.05rem;
    border-radius: 14px;
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 90px 20px 70px;
    max-width: 980px;
    margin: 0 auto;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    margin-bottom: 28px;
    border-radius: 999px;
    border: 1px solid rgba(255, 78, 205, 0.4);
    background: linear-gradient(90deg, rgba(168, 85, 247, 0.18), rgba(34, 211, 238, 0.18));
    color: #fff;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.3px;
    box-shadow: 0 4px 20px rgba(168, 85, 247, 0.2);
}

.eyebrow .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--lime);
    box-shadow: 0 0 12px var(--lime);
    animation: pulse 1.6s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.5); opacity: 0.6; }
}

.hero h1 {
    font-size: clamp(2.7rem, 6.5vw, 5rem);
    line-height: 1.05;
    margin-bottom: 24px;
    font-weight: 800;
    letter-spacing: -1.5px;
    background: var(--grad-main);
    background-size: 220% auto;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: hueShift 6s linear infinite;
    filter: drop-shadow(0 6px 30px rgba(168, 85, 247, 0.3));
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 36px;
    max-width: 620px;
    margin-left: auto;
    margin-right: auto;
}

/* Trust stats row */
.trust-stats {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 48px;
    margin: 48px auto 0;
    padding-top: 36px;
    border-top: 1px solid var(--border);
    max-width: 760px;
}

.trust-stat {
    text-align: center;
}

.trust-stat .num {
    font-family: var(--font-mono);
    font-size: 2.2rem;
    font-weight: 700;
    background: var(--grad-main);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1;
}
.trust-stat:nth-child(2) .num { background: var(--grad-warm); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.trust-stat:nth-child(3) .num { background: var(--grad-cool); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.trust-stat:nth-child(4) .num { background: linear-gradient(135deg, var(--lime), var(--cyan)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }

.trust-stat .label {
    margin-top: 8px;
    font-size: 0.85rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Grid layout for generic sections */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 60px 20px;
}

.section-title {
    font-size: clamp(1.9rem, 4vw, 2.6rem);
    font-weight: 800;
    text-align: center;
    margin-bottom: 12px;
    letter-spacing: -0.5px;
    background: var(--grad-main);
    background-size: 200% auto;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: hueShift 7s linear infinite;
}

/* Scroll reveal */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s cubic-bezier(.16,1,.3,1), transform 0.7s cubic-bezier(.16,1,.3,1);
}
.reveal.in {
    opacity: 1;
    transform: none;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 560px;
    margin: 0 auto 50px;
}

/* Cards */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 30px;
    transition: transform 0.25s ease, border-color 0.25s ease, background 0.25s ease, box-shadow 0.25s ease;
    backdrop-filter: blur(10px);
    position: relative;
}

.level-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}
.level-1 { background: rgba(59, 130, 246, 0.15); color: #93c5fd; border: 1px solid rgba(59, 130, 246, 0.3); }
.level-2 { background: rgba(245, 158, 11, 0.15); color: #fcd34d; border: 1px solid rgba(245, 158, 11, 0.3); }
.level-3 { background: rgba(239, 68, 68, 0.15); color: #fca5a5; border: 1px solid rgba(239, 68, 68, 0.3); }

.card:hover {
    border-color: var(--border-strong);
    transform: translateY(-6px);
    background: rgba(255, 255, 255, 0.07);
    box-shadow: var(--shadow-md);
}

/* Game cards get an accent sweep + glow on hover */
.game-card {
    overflow: hidden;
}
.game-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: var(--grad-main);
    background-size: 200% auto;
    opacity: 0;
    transition: opacity 0.3s;
    animation: hueShift 4s linear infinite;
}
.game-card::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: radial-gradient(180px circle at top right, rgba(168, 85, 247, 0.22), transparent 70%);
    opacity: 0;
    transition: opacity 0.3s;
    pointer-events: none;
}
.game-card:hover {
    box-shadow: 0 16px 44px rgba(168, 85, 247, 0.3);
    border-color: rgba(255, 78, 205, 0.4);
}
.game-card:hover::before,
.game-card:hover::after {
    opacity: 1;
}
.game-card h4 {
    transition: color 0.25s;
}
.game-card:hover h4 {
    color: #f0abfc;
}
.game-card > div:first-of-type,
.game-card [style*="font-size: 3rem"] {
    transition: transform 0.3s cubic-bezier(.16,1,.3,1);
}
.game-card:hover [style*="font-size: 3rem"] {
    transform: scale(1.25) rotate(-6deg);
}

/* Category headings */
.category h3 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
}

/* Pricing Section */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

/* Games Grid */
.games-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

@media (max-width: 900px) {
    .games-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .games-grid {
        grid-template-columns: 1fr;
    }
}

.pricing-card {
    text-align: center;
    position: relative;
    overflow: hidden;
}

.pricing-card.popular {
    border-color: rgba(255, 78, 205, 0.5);
    background: linear-gradient(180deg, rgba(168, 85, 247, 0.14), rgba(34, 211, 238, 0.05));
    box-shadow: 0 0 0 1px rgba(255, 78, 205, 0.25), 0 24px 60px rgba(168, 85, 247, 0.25);
}

.pricing-card.popular::before {
    content: 'MOST POPULAR';
    position: absolute;
    top: 22px;
    right: -38px;
    background: var(--grad-warm);
    color: #fff;
    font-size: 0.65rem;
    font-weight: 800;
    padding: 5px 44px;
    transform: rotate(45deg);
    letter-spacing: 1px;
    box-shadow: 0 4px 14px rgba(255, 78, 205, 0.4);
}

.price {
    background: var(--grad-main);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.price span {
    -webkit-text-fill-color: var(--text-secondary);
}

.pricing-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
}

.price {
    font-size: 3rem;
    font-weight: 800;
    margin: 20px 0;
}

.price span {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Forms */
.form-group {
    margin-bottom: 20px;
    text-align: left;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-control {
    width: 100%;
    padding: 14px 20px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: rgba(0, 0, 0, 0.2);
    color: #fff;
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-control:focus {
    outline: none;
    border-color: var(--accent);
}

/* Admin Table */
.table-container {
    overflow-x: auto;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 20px;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 16px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

th {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.status-badge {
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
}

.status-pending { background: rgba(245, 158, 11, 0.2); color: #fbbf24; }
.status-approved { background: rgba(16, 185, 129, 0.2); color: #34d399; }
.status-rejected { background: rgba(239, 68, 68, 0.2); color: #f87171; }

.action-btns {
    display: flex;
    gap: 8px;
}

.btn-small {
    padding: 6px 12px;
    font-size: 0.8rem;
    border-radius: 6px;
}

/* ================================================
   Features Section
   ================================================ */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

@media (max-width: 900px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 600px) {
    .features-grid {
        grid-template-columns: 1fr;
    }
}

.feature {
    padding: 32px 28px;
}

.feature .feature-icon {
    width: 58px;
    height: 58px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 16px;
    background: var(--grad-fun);
    font-size: 1.6rem;
    margin-bottom: 18px;
    box-shadow: 0 8px 22px rgba(168, 85, 247, 0.35);
    transition: transform 0.3s cubic-bezier(.16,1,.3,1);
}
.features-grid .feature:nth-child(2) .feature-icon { background: var(--grad-cool); box-shadow: 0 8px 22px rgba(34,211,238,0.35); }
.features-grid .feature:nth-child(3) .feature-icon { background: var(--grad-warm); box-shadow: 0 8px 22px rgba(251,146,60,0.35); }
.features-grid .feature:nth-child(4) .feature-icon { background: linear-gradient(135deg, var(--lime), var(--cyan)); box-shadow: 0 8px 22px rgba(163,230,53,0.3); }
.features-grid .feature:nth-child(5) .feature-icon { background: linear-gradient(135deg, var(--pink), var(--orange)); box-shadow: 0 8px 22px rgba(255,78,205,0.35); }
.features-grid .feature:nth-child(6) .feature-icon { background: linear-gradient(135deg, var(--cyan), var(--accent)); box-shadow: 0 8px 22px rgba(34,211,238,0.3); }
.feature:hover .feature-icon {
    transform: translateY(-4px) scale(1.08) rotate(-6deg);
}

.feature h4 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.feature p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ================================================
   How It Works — Steps
   ================================================ */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    counter-reset: step;
}

@media (max-width: 700px) {
    .steps-grid {
        grid-template-columns: 1fr;
    }
}

.step {
    text-align: center;
    padding: 36px 24px;
}

.step .step-num {
    width: 54px;
    height: 54px;
    margin: 0 auto 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--grad-main);
    background-size: 200% auto;
    color: #fff;
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 1.2rem;
    box-shadow: 0 8px 22px var(--accent-glow);
    animation: hueShift 5s linear infinite;
}
.steps-grid .step:nth-child(2) .step-num { background: var(--grad-warm); }
.steps-grid .step:nth-child(3) .step-num { background: var(--grad-cool); }

.step h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.step p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ================================================
   Footer
   ================================================ */
.site-footer {
    margin-top: auto;
    border-top: 3px solid transparent;
    border-image: var(--grad-main) 1;
    background: rgba(13, 5, 36, 0.5);
    backdrop-filter: blur(10px);
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 56px 20px 32px;
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 40px;
}

@media (max-width: 700px) {
    .footer-inner {
        grid-template-columns: 1fr;
        gap: 28px;
    }
}

.footer-brand .nav-brand {
    margin-bottom: 14px;
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 0.92rem;
    max-width: 320px;
}

.footer-col h5 {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    color: var(--text-muted);
    margin-bottom: 16px;
    font-weight: 700;
}

.footer-col a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    margin-bottom: 12px;
    transition: color 0.2s;
}

.footer-col a:hover {
    color: #fff;
}

.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.footer-bottom .made-with {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

/* Demo frame wrapper */
.demo-frame {
    width: 100%;
    max-width: 920px;
    margin: 0 auto;
    border-radius: 18px;
    overflow: hidden;
    border: 1px solid var(--border-strong);
    box-shadow: var(--shadow-lg);
    background: #0f172a;
}

.demo-frame .demo-bar {
    background: rgba(0, 0, 0, 0.55);
    padding: 11px;
    text-align: center;
    font-family: var(--font-mono);
    font-size: 0.82rem;
    letter-spacing: 0.5px;
    color: #fbbf24;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
}

.demo-frame iframe {
    border: none;
    display: block;
    background: #000;
    width: 100%;
    height: 500px;
}

/* Respect reduced-motion preference */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation: none !important;
        transition-duration: 0.01ms !important;
    }
    .reveal { opacity: 1 !important; transform: none !important; }
    html { scroll-behavior: auto; }
}