/* ===== ROOT & VARIABLES ===== */
:root {
    --color-purple: #C4B5D8;
    --color-lavender: #EDE9FE;
    --color-pink: #EC4899;
    --color-amber: #F59E0B;
    --color-indigo: #6366F1;
    --color-dark-purple: #251A3A;
    --color-void: #0C0A1A;
    --color-void-light: #1A1235;

    --font-display: 'Playfair Display', serif;
    --font-body: 'Inter', sans-serif;

    --gradient-primary: linear-gradient(135deg, #C4B5D8, #EC4899, #6366F1);
    --gradient-bg: radial-gradient(ellipse at 50% 30%, #1A1235, #0C0A1A);
}

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

html, body {
    width: 100%;
    height: 100%;
}

body {
    font-family: var(--font-body);
    background: var(--gradient-bg);
    color: var(--color-lavender);
    overflow-x: hidden;
    min-height: 500vh;
}

/* ===== TYPOGRAPHY ===== */
h1 {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 7vw, 5rem);
    font-weight: 700;
    letter-spacing: 0.02em;
    color: var(--color-lavender);
}

h2 {
    font-family: var(--font-display);
    font-size: clamp(1.4rem, 3vw, 2.4rem);
    font-weight: 500;
    letter-spacing: 0.02em;
    color: var(--color-lavender);
    margin-bottom: 2rem;
}

h3 {
    font-family: var(--font-display);
    font-size: clamp(1.1rem, 2vw, 1.6rem);
    font-weight: 500;
    letter-spacing: 0.015em;
    color: var(--color-purple);
}

p {
    font-family: var(--font-body);
    font-size: clamp(1rem, 2vw, 1.1rem);
    font-weight: 400;
    line-height: 1.6;
    color: var(--color-lavender);
}

/* ===== PANELS ===== */
.panel {
    width: 100%;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
    position: relative;
}

.panel-1 {
    background: var(--gradient-bg);
}

.panel-2, .panel-3, .panel-4, .panel-5 {
    background: linear-gradient(180deg, rgba(26, 18, 53, 0.8), rgba(12, 10, 26, 0.9));
    backdrop-filter: blur(10px);
}

.panel-content {
    max-width: 1200px;
    width: 100%;
    z-index: 1;
}

/* ===== VOID CONTAINER ===== */
.void-container {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3rem;
}

.domain-title {
    text-shadow: 0 0 40px rgba(236, 72, 153, 0.3), 0 0 80px rgba(99, 102, 241, 0.2);
    letter-spacing: 0.05em;
    animation: float 6s ease-in-out infinite;
}

.domain-subtitle {
    font-family: var(--font-body);
    font-size: clamp(0.9rem, 2vw, 1.2rem);
    color: var(--color-purple);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    opacity: 0.8;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(20px); }
}

/* ===== HUD RING GROUP ===== */
.hud-ring-group {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 4rem;
    max-width: 400px;
    margin: 0 auto;
}

.hud-ring {
    width: 100%;
    max-width: 150px;
    animation: rotate 8s linear infinite;
    filter: drop-shadow(0 0 20px rgba(236, 72, 153, 0.3));
}

.hud-ring:nth-child(2) {
    animation: rotate 8s linear infinite reverse;
}

.hud-ring:nth-child(3) {
    animation: rotate 12s linear infinite;
}

.hud-ring:nth-child(4) {
    animation: rotate 12s linear infinite reverse;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* ===== METRICS GRID ===== */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.metric-card {
    background: rgba(196, 181, 216, 0.05);
    border: 1px solid rgba(196, 181, 216, 0.2);
    border-radius: 8px;
    padding: 2rem 1.5rem;
    text-align: center;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    cursor: pointer;
}

.metric-card:hover {
    background: rgba(196, 181, 216, 0.08);
    border-color: rgba(236, 72, 153, 0.4);
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(236, 72, 153, 0.15);
}

.metric-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1rem;
    display: block;
    filter: drop-shadow(0 0 10px rgba(236, 72, 153, 0.2));
}

.metric-label {
    font-family: var(--font-body);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-purple);
    margin-bottom: 0.5rem;
    opacity: 0.9;
}

.metric-value {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-pink);
    letter-spacing: 0.05em;
}

/* ===== PHILOSOPHY CARDS ===== */
.philosophy-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2.5rem;
    margin-top: 3rem;
}

.philosophy-card {
    background: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 8px;
    padding: 2.5rem 2rem;
    text-align: center;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.philosophy-card:hover {
    background: rgba(99, 102, 241, 0.12);
    border-color: rgba(99, 102, 241, 0.5);
    transform: translateY(-6px);
}

.philosophy-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 1.5rem;
    display: block;
    filter: drop-shadow(0 0 15px rgba(99, 102, 241, 0.3));
}

.philosophy-card h3 {
    margin-bottom: 1rem;
}

.philosophy-card p {
    font-size: 0.95rem;
    opacity: 0.9;
    line-height: 1.7;
}

/* ===== INTERFACE SHOWCASE ===== */
.interface-showcase {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2.5rem;
    margin-top: 3rem;
}

.interface-item {
    background: rgba(245, 158, 11, 0.05);
    border: 1px solid rgba(245, 158, 11, 0.2);
    border-radius: 8px;
    padding: 2rem;
    text-align: center;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.interface-item:hover {
    background: rgba(245, 158, 11, 0.08);
    border-color: rgba(245, 158, 11, 0.4);
    transform: translateY(-4px);
}

.interface-label {
    font-family: var(--font-body);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--color-amber);
    margin-bottom: 1.5rem;
    opacity: 0.85;
}

.interface-svg {
    width: 100%;
    max-width: 150px;
    height: auto;
    margin: 0 auto;
    display: block;
    filter: drop-shadow(0 0 12px rgba(245, 158, 11, 0.25));
}

/* ===== ENDLESS SECTION ===== */
.endless-text {
    font-size: clamp(1rem, 2vw, 1.15rem);
    line-height: 1.9;
    max-width: 900px;
    margin: 0 auto 3rem;
    text-align: center;
    color: var(--color-lavender);
}

.scattered-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 1.5rem;
    margin-top: 3rem;
    perspective: 1000px;
}

.scattered-card {
    background: rgba(196, 181, 216, 0.08);
    border: 1px solid rgba(196, 181, 216, 0.25);
    border-radius: 6px;
    padding: 2rem 1.5rem;
    text-align: center;
    backdrop-filter: blur(10px);
    transform: rotateZ(calc(var(--position) * -2deg - 4deg));
    transition: all 0.3s ease;
    cursor: pointer;
}

.scattered-card:hover {
    background: rgba(196, 181, 216, 0.12);
    border-color: rgba(196, 181, 216, 0.4);
    transform: rotateZ(0deg) translateY(-4px);
    box-shadow: 0 15px 35px rgba(196, 181, 216, 0.15);
}

.scattered-card p {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-purple);
    letter-spacing: 0.01em;
}

/* ===== GRADIENT DEFS ===== */
.gradient-defs {
    position: absolute;
    width: 0;
    height: 0;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .hud-ring-group {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
        max-width: 300px;
    }

    .hud-ring {
        max-width: 120px;
    }

    .metrics-grid,
    .philosophy-cards,
    .interface-showcase {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .panel {
        padding: 2rem 1rem;
    }

    .scattered-cards {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    :root {
        font-size: 14px;
    }

    .domain-title {
        font-size: 2.5rem;
    }

    .domain-subtitle {
        font-size: 0.9rem;
    }

    h2 {
        font-size: 1.4rem;
        margin-bottom: 1.5rem;
    }

    .void-container {
        gap: 2rem;
    }

    .hud-ring-group {
        gap: 1.5rem;
        max-width: 250px;
    }

    .metric-icon,
    .philosophy-icon {
        width: 60px;
        height: 60px;
    }

    .metric-value {
        font-size: 1.5rem;
    }
}

/* ===== SCROLL-BASED ANIMATIONS ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.panel-2 .panel-content,
.panel-3 .panel-content,
.panel-4 .panel-content,
.panel-5 .panel-content {
    animation: fadeInUp 1s ease-out forwards;
}

.panel-2 .panel-content {
    animation-delay: 0.1s;
}

.panel-3 .panel-content {
    animation-delay: 0.1s;
}

.panel-4 .panel-content {
    animation-delay: 0.1s;
}

.panel-5 .panel-content {
    animation-delay: 0.1s;
}