/* === RESET & BASE === */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --magnetic-void: #060d18;
    --polar-navy: #0a1628;
    --gunmetal-wash: #1c2a3f;
    --chrome-depth: #2a3d55;
    --signal-cyan: #00d4ff;
    --forge-silver: #8ba3be;
    --ice-white: #e8edf3;
    --slate-mist: #6b7f96;
    --silver-blue: #4a6a8a;
    --plasma-orange: #ff6b35;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    font-weight: 400;
    letter-spacing: 0.01em;
    line-height: 1.65;
    font-size: clamp(0.95rem, 1.2vw, 1.1rem);
    color: var(--ice-white);
    background: var(--magnetic-void);
    background-image: linear-gradient(to bottom, #060d18 0%, #0a1628 40%, #060d18 100%);
    min-height: 100vh;
    overflow-x: hidden;
}

/* === COORDINATE GRID (fixed) === */
.coordinate-grid {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    opacity: 0;
    background-image:
        linear-gradient(to right, rgba(28, 42, 63, 0.5) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(28, 42, 63, 0.5) 1px, transparent 1px);
    background-size: 40px 40px;
    animation: gridFadeIn 1s 0.4s forwards;
}

@keyframes gridFadeIn {
    to { opacity: 0.05; }
}

@media (max-width: 768px) {
    .coordinate-grid {
        background-size: 60px 60px;
    }
}

/* === PARTICLES === */
.particles {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 1;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--signal-cyan);
    opacity: 0.4;
    will-change: transform;
}

@keyframes particleDrift1 {
    0% { transform: translate(0, 0); }
    25% { transform: translate(30vw, -20vh); }
    50% { transform: translate(60vw, 10vh); }
    75% { transform: translate(40vw, 50vh); }
    100% { transform: translate(80vw, 100vh); }
}
@keyframes particleDrift2 {
    0% { transform: translate(90vw, 0); }
    25% { transform: translate(60vw, 30vh); }
    50% { transform: translate(30vw, 60vh); }
    75% { transform: translate(50vw, 80vh); }
    100% { transform: translate(10vw, 100vh); }
}
@keyframes particleDrift3 {
    0% { transform: translate(50vw, -10vh); }
    33% { transform: translate(20vw, 40vh); }
    66% { transform: translate(70vw, 70vh); }
    100% { transform: translate(40vw, 110vh); }
}
@keyframes particleDrift4 {
    0% { transform: translate(10vw, 100vh); }
    25% { transform: translate(40vw, 70vh); }
    50% { transform: translate(70vw, 40vh); }
    75% { transform: translate(50vw, 10vh); }
    100% { transform: translate(20vw, -10vh); }
}
@keyframes particleDrift5 {
    0% { transform: translate(80vw, 100vh); }
    33% { transform: translate(50vw, 50vh); }
    66% { transform: translate(20vw, 20vh); }
    100% { transform: translate(60vw, -10vh); }
}

/* === HERO === */
.hero {
    position: relative;
    width: 100%;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
    overflow: hidden;
}

.field-lines {
    position: absolute;
    width: 80%;
    height: 80%;
    opacity: 0;
    animation: fieldFadeIn 1s 0.4s forwards;
}

@keyframes fieldFadeIn {
    to { opacity: 1; }
}

.field-lines line {
    stroke: var(--signal-cyan);
    stroke-width: 1;
    opacity: 0.15;
    stroke-dasharray: 500;
    stroke-dashoffset: 500;
    animation: drawLine 2s ease-out forwards;
}

@keyframes drawLine {
    to { stroke-dashoffset: 0; }
}

.hero-content {
    position: relative;
    text-align: center;
    z-index: 3;
}

.hero-title {
    font-family: 'Space Mono', monospace;
    font-weight: 700;
    font-size: clamp(3rem, 8vw, 6rem);
    letter-spacing: 0.08em;
    line-height: 1.05;
    color: var(--ice-white);
    opacity: 0;
    transform: scale(0.8);
    animation: titleSpring 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) 1.2s forwards;
}

@keyframes titleSpring {
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.hero-subtitle {
    font-family: 'IBM Plex Mono', monospace;
    font-weight: 500;
    font-size: clamp(0.9rem, 1.8vw, 1.3rem);
    letter-spacing: 0.04em;
    line-height: 1.3;
    color: var(--slate-mist);
    margin-top: 1.5rem;
    opacity: 0;
    animation: subtitleFade 0.8s ease 1.8s forwards;
}

@keyframes subtitleFade {
    to { opacity: 1; }
}

/* === CARD GRID === */
.card-grid {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 24px;
    padding: 48px 24px;
    max-width: 1400px;
    margin: 0 auto;
}

/* Card spans */
.card-span-2 { grid-column: span 2; }
.card-span-3 { grid-column: span 3; }
.card-span-4 { grid-column: span 4; }
.card-span-5 { grid-column: span 5; }
.card-span-6 { grid-column: span 6; }
.card-span-7 { grid-column: span 7; }
.card-span-8 { grid-column: span 8; }
.card-span-9 { grid-column: span 9; }

/* === CARDS === */
.card {
    position: relative;
    border-radius: 4px;
    padding: 32px;
    overflow: hidden;
    opacity: 0;
    transform: translateY(40px) rotateX(4deg);
    transition: opacity 0.5s cubic-bezier(0.34, 1.56, 0.64, 1), transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
    transform-style: preserve-3d;
}

.card.visible {
    opacity: 1;
    transform: translateY(0) rotateX(0);
}

.card-primary {
    background: var(--polar-navy);
    min-height: 50vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.card-secondary {
    background: var(--gunmetal-wash);
    border: 1px solid var(--silver-blue);
    min-height: 30vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.card-tertiary {
    background: var(--chrome-depth);
    min-height: 15vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.card:hover {
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.06), inset 0 1px 0 rgba(139, 163, 190, 0.12);
}

/* Card Sheen */
.card-sheen {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(139,163,190,0.08) 0%, rgba(0,212,255,0.04) 50%, rgba(139,163,190,0.08) 100%);
    pointer-events: none;
    transition: background 0.3s ease;
}

/* === CARD CONTENT === */
.card-headline {
    font-family: 'Space Mono', monospace;
    font-weight: 700;
    font-size: clamp(2.4rem, 6vw, 5.5rem);
    letter-spacing: 0.08em;
    line-height: 1.05;
    text-transform: uppercase;
    color: var(--ice-white);
}

.card-headline-overlay {
    position: relative;
    z-index: 3;
}

.card-subhead {
    font-family: 'IBM Plex Mono', monospace;
    font-weight: 500;
    font-size: clamp(0.9rem, 1.8vw, 1.3rem);
    letter-spacing: 0.04em;
    line-height: 1.3;
    color: var(--signal-cyan);
    margin-bottom: 1rem;
}

.card-body {
    color: var(--ice-white);
    max-width: 60ch;
    margin-top: 0.5rem;
}

.card-meta {
    font-family: 'IBM Plex Mono', monospace;
    font-weight: 500;
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    color: var(--slate-mist);
    text-transform: uppercase;
    display: block;
    margin-bottom: 0.5rem;
}

.card-metric {
    font-family: 'Space Mono', monospace;
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--signal-cyan);
    letter-spacing: 0.04em;
}

.card-metric-large {
    font-family: 'Space Mono', monospace;
    font-weight: 700;
    font-size: clamp(2rem, 4vw, 3.5rem);
    color: var(--signal-cyan);
    letter-spacing: 0.02em;
}

/* === STATUS INDICATORS === */
.status-indicator {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--signal-cyan);
    animation: statusPulse 2s ease-in-out infinite;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--signal-cyan);
    animation: statusPulse 2s ease-in-out infinite;
    margin-bottom: 0.5rem;
}

@keyframes statusPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

/* === ANNOTATIONS === */
.annotation {
    position: relative;
    margin-top: 2rem;
    padding-top: 1rem;
}

.annotation-line {
    position: absolute;
    top: 0;
    left: 0;
    width: 60px;
    height: 1px;
    border-top: 1px dashed rgba(139, 163, 190, 0.3);
}

.annotation-label {
    font-family: 'IBM Plex Mono', monospace;
    font-weight: 500;
    font-size: 0.7rem;
    letter-spacing: 0.06em;
    color: var(--forge-silver);
    opacity: 0.6;
}

/* === PHOTO CARD === */
.card-photo {
    background: var(--polar-navy);
    background-image:
        radial-gradient(ellipse at 30% 40%, rgba(0, 212, 255, 0.08) 0%, transparent 60%),
        radial-gradient(ellipse at 70% 70%, rgba(139, 163, 190, 0.06) 0%, transparent 50%);
    position: relative;
}

.photo-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--polar-navy) 0%, rgba(139, 163, 190, 0.15) 100%);
    mix-blend-mode: multiply;
}

.scan-lines {
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(
        to bottom,
        transparent,
        transparent 3px,
        rgba(255, 255, 255, 0.03) 3px,
        rgba(255, 255, 255, 0.03) 4px
    );
    pointer-events: none;
}

/* === FIELD VIZ === */
.card-field {
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.field-viz {
    width: 100%;
    height: 100%;
    position: absolute;
    inset: 0;
}

.field-viz line {
    stroke: var(--signal-cyan);
    stroke-width: 0.5;
    opacity: 0.2;
}

.field-viz circle {
    fill: var(--plasma-orange);
}

/* === LEGEND === */
.legend-item {
    font-family: 'IBM Plex Mono', monospace;
    font-weight: 500;
    font-size: 0.75rem;
    color: var(--slate-mist);
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 0.5rem;
}

.legend-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.legend-dot.cyan { background: var(--signal-cyan); }
.legend-dot.silver { background: var(--forge-silver); }
.legend-dot.orange { background: var(--plasma-orange); }

/* === TERMINUS === */
.card-terminus {
    grid-column: 3 / 11;
    text-align: center;
    align-items: center;
}

.terminus-domain {
    margin-top: 2rem;
    font-size: 0.9rem;
    color: var(--forge-silver);
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
    .card-grid {
        grid-template-columns: 1fr;
        gap: 16px;
        padding: 24px 16px;
    }

    .card-span-2, .card-span-3, .card-span-4, .card-span-5,
    .card-span-6, .card-span-7, .card-span-8, .card-span-9 {
        grid-column: span 1;
    }

    .card-terminus {
        grid-column: span 1;
    }

    .card-primary { min-height: 40vh; }
    .card-secondary { min-height: 25vh; }
    .card-tertiary { min-height: 12vh; }

    .card {
        transform: translateY(30px);
    }

    .card.visible {
        transform: translateY(0);
    }
}