:root {
    /* Osaka Dark palette */
    --bg-main: #0d1411;
    --bg-card: rgba(18, 28, 24, 0.65);
    --bg-elevated: rgba(26, 38, 32, 0.85);

    --accent: #7fbf8a;
    --accent-glow: rgba(127, 191, 138, 0.4);
    --accent-hover: #96d0a0;
    --accent-muted: rgba(127, 191, 138, 0.1);

    --accent-gold: #e0b663;
    --accent-gold-glow: rgba(224, 182, 99, 0.35);
    --accent-gold-muted: rgba(224, 182, 99, 0.1);

    --text-primary: #eef4ef;
    --text-secondary: #c9d6cd;
    --text-muted: #8aa095;

    --border: rgba(238, 244, 239, 0.08);
    --border-hover: rgba(127, 191, 138, 0.4);

    --glass: blur(16px) saturate(180%);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.6);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.8);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);

    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --font-title: 'Montserrat', var(--font-sans);
}

/* Base reset & Typography */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

::selection {
    background: var(--accent);
    color: #0d1411;
}

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-main);
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* FOND ANIMÉ LIQUID ORBS */
.bg-orbs {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
    background: radial-gradient(circle at 50% 50%, #0d1411 0%, #080c0a 100%);
}

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.12;
    animation: floatOrb 25s infinite alternate ease-in-out;
}

.orb-1 {
    width: 55vw;
    height: 55vw;
    background: var(--accent);
    top: -20%;
    left: -10%;
}

.orb-2 {
    width: 45vw;
    height: 45vw;
    background: #2b2411;
    bottom: -10%;
    right: -10%;
    animation-delay: -7s;
}

@keyframes floatOrb {
    0% {
        transform: translate(0, 0) scale(1);
    }

    100% {
        transform: translate(8vw, 12vh) scale(1.15);
    }
}

/* Header */
.hub-header {
    height: 72px;
    background-color: rgba(13, 20, 17, 0.85);
    backdrop-filter: var(--glass);
    -webkit-backdrop-filter: var(--glass);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 3rem;
    position: sticky;
    top: 0;
    width: 100%;
    z-index: 1000;
}

.hub-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-title);
    font-weight: 900;
    font-size: 1.35rem;
    letter-spacing: 0.03em;
}

.hub-brand-emoji {
    font-size: 1.6rem;
    filter: drop-shadow(0 0 12px var(--accent-glow));
}

.hub-brand-text {
    background: linear-gradient(90deg, #7fbf8a 0%, #ffffff 50%, #e0b663 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

/* Main */
.hub-main {
    flex: 1;
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 4rem 3rem 6rem 3rem;
}

.hub-hero {
    text-align: center;
    margin-bottom: 3.5rem;
    animation: slideUp 0.8s ease-out;
}

.hub-title {
    font-family: var(--font-title);
    font-size: 2.8rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: -0.02em;
    margin-bottom: 0.75rem;
}

.hub-title span {
    background: linear-gradient(90deg, #7fbf8a, #e0b663);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

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

/* Grid */
.sections-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.75rem;
}

.hub-loading {
    grid-column: 1 / -1;
    text-align: center;
    color: var(--text-muted);
    padding: 3rem 0;
}

.hub-error {
    grid-column: 1 / -1;
    text-align: center;
    padding: 3rem 0;
}

.hub-error h2 {
    font-family: var(--font-title);
    color: var(--accent);
    margin-bottom: 0.5rem;
}

.hub-error p {
    color: var(--text-secondary);
}

/* Section Card */
.section-card {
    display: flex;
    flex-direction: column;
    background: var(--bg-card);
    backdrop-filter: var(--glass);
    -webkit-backdrop-filter: var(--glass);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 2rem;
    text-decoration: none;
    color: var(--text-primary);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    animation: fadeIn 0.5s ease-out forwards;
}

.section-card::before {
    content: '';
    position: absolute;
    top: -1px;
    left: 20%;
    right: 20%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    opacity: 0;
    transition: var(--transition);
}

.section-card:hover {
    transform: translateY(-8px);
    border-color: var(--border-hover);
    background: var(--bg-elevated);
    box-shadow: var(--shadow-lg);
}

.section-card:hover::before {
    opacity: 0.8;
}

.section-card-emoji {
    font-size: 3rem;
    margin-bottom: 1.25rem;
    display: block;
    filter: drop-shadow(0 0 14px var(--accent-glow));
    transition: transform 0.3s ease;
}

.section-card:hover .section-card-emoji {
    transform: scale(1.12) rotate(-4deg);
}

.section-card h2 {
    font-family: var(--font-title);
    font-size: 1.35rem;
    font-weight: 800;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.section-card p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
    flex-grow: 1;
    margin-bottom: 1.5rem;
}

.section-card-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--accent);
    transition: var(--transition);
}

.section-card-link svg {
    transition: transform 0.3s ease;
}

.section-card:hover .section-card-link svg {
    transform: translateX(4px);
}

/* Footer */
.hub-footer {
    padding: 2rem 3rem;
    border-top: 1px solid var(--border);
    background: rgba(0, 0, 0, 0.2);
    text-align: center;
}

.hub-footer p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(16px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive */
@media (max-width: 768px) {
    .hub-header {
        padding: 0 1.5rem;
    }

    .hub-main {
        padding: 2.5rem 1.5rem 4rem 1.5rem;
    }

    .hub-title {
        font-size: 2rem;
    }

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