:root {
    --bg-deep: #05080f;
    --bg-slate: #0b1120;
    --bg-card: rgba(255, 255, 255, 0.02);
    --border-glass: rgba(255, 255, 255, 0.05);
    --border-highlight: rgba(255, 255, 255, 0.1);
    
    --accent-blue: #22c55e;
    --accent-cyan: #10b981;
    --accent-indigo: #16a34a;
    --accent-teal: #14b8a6;
    
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --text-reading: #cbd5e1;
    
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
}

body {
    background-color: var(--bg-deep);
    color: var(--text-main);
    font-family: var(--font-body);
    overflow-x: hidden;
}

/* Atmospheric Layer */
.library-ambient {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: radial-gradient(circle at 50% -20%, #0f172a 0%, var(--bg-deep) 80%);
}

.library-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(150px);
    opacity: 0.15;
    pointer-events: none;
    mix-blend-mode: screen;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
}

section {
    padding: clamp(5rem, 9vw, 10rem) 0;
    position: relative;
}

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 300;
    letter-spacing: -0.02em;
}

.section-label {
    text-transform: uppercase;
    letter-spacing: 0.25em;
    color: var(--accent-cyan);
    font-size: 0.75rem;
    margin-bottom: 1.5rem;
    display: block;
    font-weight: 600;
}

/* 1. Hero Section */
.hero-library {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding-top: 6rem;
}

.hero-content {
    max-width: 800px;
    text-align: center;
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    line-height: 1.1;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #fff, #93c5fd);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-muted);
    line-height: 1.7;
    max-width: 600px;
    margin: 0 auto 3rem;
}

/* Floating UI Elements in Hero */
.floating-ui {
    position: absolute;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--border-glass);
    backdrop-filter: blur(12px);
    border-radius: 16px;
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    z-index: 1;
    will-change: transform;
}

/* 2. Featured Resources */
.featured-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr));
    gap: 3rem;
}

.resource-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: 24px;
    padding: 2.5rem;
    position: relative;
    overflow: hidden;
    transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    flex-direction: column;
    will-change: transform, opacity, box-shadow;
    cursor: pointer;
}

.resource-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: radial-gradient(circle at top right, rgba(255,255,255,0.03), transparent 60%);
    opacity: 0;
    transition: opacity 0.5s;
}

.resource-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.05), rgba(16, 185, 129, 0.05));
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.5s;
}

.resource-card:hover {
    transform: translateY(-12px);
    border-color: var(--accent-cyan);
    box-shadow: 
        0 30px 60px rgba(0,0,0,0.5),
        0 0 40px rgba(34, 197, 94, 0.15),
        inset 0 1px 0 rgba(255,255,255,0.1);
}

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

.resource-card:hover::after {
    opacity: 1;
}

.resource-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    font-size: 0.8rem;
    color: var(--accent-cyan);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.read-time {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--text-muted);
}

.resource-card h3 {
    position: relative;
    transition: color 0.3s ease;
}

.resource-card:hover h3 {
    color: var(--accent-cyan);
}

/* 3. Learning Categories / Search UI */
.search-ui {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: 100px;
    padding: 0.5rem 1rem 0.5rem 2rem;
    display: flex;
    align-items: center;
    max-width: 600px;
    margin: 0 auto 4rem;
    backdrop-filter: blur(10px);
}

.search-ui input {
    background: transparent;
    border: none;
    color: var(--text-main);
    font-size: 1.1rem;
    width: 100%;
    padding: 1rem 0;
    outline: none;
    font-family: var(--font-body);
}

.search-ui input::placeholder {
    color: rgba(255,255,255,0.2);
}

.category-tabs {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 5rem;
}

.tab-btn {
    background: transparent;
    border: 1px solid var(--border-glass);
    color: var(--text-muted);
    padding: 0.8rem 2rem;
    border-radius: 100px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s;
}

.tab-btn:hover, .tab-btn.active {
    background: rgba(255,255,255,0.05);
    color: var(--text-main);
    border-color: var(--border-highlight);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

/* 4. Transformation Insights */
.insights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
    gap: 2rem;
}

.insight-card {
    background: linear-gradient(145deg, var(--bg-slate), var(--bg-deep));
    border: 1px solid var(--border-glass);
    border-radius: 20px;
    padding: 3rem 2rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 300px;
    position: relative;
    overflow: hidden;
}

.insight-card .quote-icon {
    font-size: 3rem;
    color: var(--border-glass);
    position: absolute;
    top: 2rem;
    right: 2rem;
}

.insight-text {
    font-size: 1.4rem;
    line-height: 1.5;
    font-family: var(--font-heading);
    font-weight: 300;
}

/* 5 & 6. Philosophy & Personalized Experience */
.editorial-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    align-items: center;
}

.editorial-text p {
    font-size: 1.15rem;
    color: var(--text-reading);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.visual-container {
    position: relative;
    height: 500px;
    border-radius: 30px;
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* SVGs */
.animated-svg-path {
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
    will-change: stroke-dashoffset;
}

/* CTA */
.cta-glow-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    padding: 1.2rem 3rem;
    font-size: 1.1rem;
    background: #fff;
    color: var(--bg-deep);
    border-radius: 100px;
    font-weight: 500;
    text-decoration: none;
    box-shadow: 0 20px 40px rgba(255, 255, 255, 0.15);
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    overflow: hidden;
}

.cta-glow-btn:hover {
    transform: translateY(-4px);
    box-shadow: 0 30px 60px rgba(255, 255, 255, 0.25);
}

@media (max-width: 1200px) {
    .editorial-layout { grid-template-columns: 1fr; gap: 4rem; }
    .hero-title { font-size: 3rem; }
    .floating-ui { display: none; } /* Hide on medium/mobile to prevent overlap */
}

/* Resource detail modal */
#resource-modal {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 12000;
    pointer-events: none;
    padding: clamp(0.8rem, 2vw, 1.5rem);
    overflow: hidden;
}

#resource-modal.open {
    pointer-events: auto;
}

#resource-modal .modal-backdrop {
    position: fixed;
    inset: 0;
    background: linear-gradient(135deg, rgba(2,6,23,0.6), rgba(5,8,15,0.8));
    backdrop-filter: blur(8px);
    opacity: 0;
    z-index: -1;
}

#resource-modal .modal-sheet {
    position: relative;
    width: min(900px, 100%);
    max-height: min(86vh, 900px);
    display: flex;
    border-radius: 20px;
    background: linear-gradient(180deg, rgba(11,17,32,0.95), rgba(5,8,15,0.9));
    border: 1px solid rgba(34, 197, 94, 0.15);
    box-shadow: 
        0 50px 100px rgba(0,0,0,0.6),
        0 0 60px rgba(34, 197, 94, 0.08),
        inset 1px 1px 0 rgba(255,255,255,0.05);
    opacity: 0;
    overflow: hidden;
}

#resource-modal .modal-scroll-container {
    width: 100%;
    overflow-y: auto;
    max-height: inherit;
    padding: clamp(1.4rem, 4vw, 2.5rem);
    overscroll-behavior: contain;
}

#resource-modal .modal-scroll-container::-webkit-scrollbar {
    width: 6px;
}

#resource-modal .modal-scroll-container::-webkit-scrollbar-track {
    background: transparent;
}

#resource-modal .modal-scroll-container::-webkit-scrollbar-thumb {
    background: rgba(34, 197, 94, 0.3);
    border-radius: 3px;
}

#resource-modal .modal-scroll-container::-webkit-scrollbar-thumb:hover {
    background: rgba(34, 197, 94, 0.5);
}

#resource-modal .modal-close-btn {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(34, 197, 94, 0.2);
    border-radius: 50%;
    color: var(--text-muted);
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
    z-index: 12001;
}

#resource-modal .modal-close-btn:hover {
    background: rgba(34, 197, 94, 0.15);
    color: var(--accent-cyan);
    border-color: var(--accent-cyan);
}

#resource-modal .modal-header {
    opacity: 1;
    padding-right: 3rem;
}

#resource-modal .modal-category {
    margin-bottom: 1rem;
}

#resource-modal .modal-header h2 {
    font-size: 2.2rem;
    margin: 0.5rem 0;
    line-height: 1.3;
    background: linear-gradient(135deg, #fff, #93c5fd);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

#resource-modal .modal-meta {
    margin-top: 1rem;
    color: var(--text-muted);
    font-size: 0.95rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

#resource-modal .meta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    align-items: center;
}

#resource-modal .meta-row span {
    margin-left: 0 !important;
}

#resource-modal .meta-row i {
    color: var(--accent-cyan);
    margin-right: 0.4rem;
}

#resource-modal .modal-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(34, 197, 94, 0.2), transparent);
    margin: 2rem 0;
    opacity: 0;
}

#resource-modal .modal-media-container {
    margin: 1.5rem 0;
    border-radius: 12px;
    overflow: hidden;
    background: rgba(0,0,0,0.3);
    border: 1px solid rgba(34, 197, 94, 0.1);
}

#resource-modal .modal-media-container audio,
#resource-modal .modal-media-container video {
    display: block;
    width: 100%;
    height: auto;
    background: #000;
}

#resource-modal .modal-resource-image {
    display: block;
    width: 100%;
    max-height: 58vh;
    object-fit: contain;
    background: rgba(0,0,0,0.25);
}

#resource-modal .modal-pdf-preview iframe {
    display: block;
    width: 100%;
    height: min(62vh, 680px);
    border: 0;
    background: rgba(255,255,255,0.04);
}

#resource-modal .modal-body {
    margin-top: 1.5rem;
    color: var(--text-reading);
    line-height: 1.8;
    font-size: 1rem;
    opacity: 0;
}

#resource-modal .modal-content-text {
    word-wrap: break-word;
    overflow-wrap: break-word;
}

#resource-modal .modal-content-text img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    margin: 1.2rem 0;
    border: 1px solid rgba(34, 197, 94, 0.1);
}

#resource-modal .modal-content-text p {
    margin: 1rem 0;
}

#resource-modal .modal-content-text h3,
#resource-modal .modal-content-text h4 {
    margin: 1.5rem 0 0.8rem;
    color: #fff;
}

#resource-modal .modal-empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-muted);
}

#resource-modal .modal-empty-state i {
    margin-right: 0.5rem;
    color: var(--accent-cyan);
}

#resource-modal .modal-footer {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(34, 197, 94, 0.1);
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    opacity: 0;
}

#resource-modal .modal-cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.9rem 2rem;
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-teal));
    color: var(--bg-deep);
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 10px 30px rgba(16, 185, 129, 0.2);
}

#resource-modal .modal-cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 40px rgba(16, 185, 129, 0.35);
}

#resource-modal .modal-cta-btn:active {
    transform: translateY(0);
}

@media (max-width: 768px) {
    #resource-modal {
        padding: 0.75rem;
        align-items: flex-start;
    }

    #resource-modal .modal-sheet {
        border-radius: 16px;
        max-height: calc(100dvh - 1.5rem);
    }

    #resource-modal .modal-scroll-container {
        padding: 1.25rem;
        max-height: inherit;
    }

    #resource-modal .modal-close-btn {
        top: 0.75rem;
        right: 0.75rem;
        width: 36px;
        height: 36px;
        font-size: 1rem;
    }

    #resource-modal .modal-header h2 {
        font-size: 1.6rem;
    }

    .container {
        padding: 0 1rem;
    }

    .hero-library {
        min-height: auto;
        padding: 5rem 0 4rem;
    }

    .hero-subtitle {
        font-size: 1rem;
        line-height: 1.6;
    }

    .search-ui {
        display: grid;
        grid-template-columns: auto minmax(0, 1fr);
        border-radius: 22px;
        padding: 0.75rem;
        gap: 0.5rem;
    }

    .search-ui button {
        grid-column: 1 / -1;
        width: 100%;
    }

    .category-tabs {
        justify-content: flex-start;
        flex-wrap: nowrap;
        overflow-x: auto;
        padding-bottom: 0.5rem;
        margin-bottom: 2rem;
        -webkit-overflow-scrolling: touch;
    }

    .tab-btn {
        flex: 0 0 auto;
        padding: 0.7rem 1rem;
    }

    .featured-grid {
        gap: 1rem;
    }

    .resource-card {
        padding: 1.35rem;
        border-radius: 16px;
    }

    .resource-meta {
        align-items: flex-start;
        gap: 0.7rem;
        flex-direction: column;
        margin-bottom: 1.2rem;
    }

    .insight-text {
        font-size: 1.12rem;
    }

    .visual-container {
        height: 320px;
    }

    section[style*="text-align: center"] h2 {
        font-size: 2.3rem !important;
    }
}