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

:root {
    --deep-navy: #0a0e1a;
    --dark-navy: #0f1428;
    --navy: #1a2240;
    --metallic-blue: #8a9cc5;
    --steel-blue: #4a6fa5;
    --light-steel: #b8c8e8;
    --pale-blue: #c8d0e4;
    --ice: #e2e8f4;
    --gap: 2px;
}

html, body {
    height: 100%;
    background: var(--deep-navy);
    font-family: 'Inter', sans-serif;
    color: var(--pale-blue);
    overflow-x: hidden;
}

.bento-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: auto;
    gap: var(--gap);
    padding: var(--gap);
    min-height: 100vh;
    max-width: 1400px;
    margin: 0 auto;
}

/* Cell base */
.cell {
    background: var(--dark-navy);
    position: relative;
    overflow: hidden;
    padding: 2rem;
    transition: background 0.3s ease;
}

.cell:hover {
    background: var(--navy);
}

.cell-border {
    position: absolute;
    inset: 0;
    border: 1px solid var(--navy);
    pointer-events: none;
    transition: border-color 0.3s ease;
}

.cell:hover .cell-border {
    border-color: var(--steel-blue);
}

/* Hero cell */
.cell-hero {
    grid-column: 1 / 3;
    grid-row: 1 / 2;
    display: flex;
    align-items: flex-end;
    padding: 3rem;
    min-height: 300px;
}

.hero-title {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: clamp(3rem, 10vw, 9rem);
    line-height: 0.92;
    letter-spacing: -0.03em;
    color: var(--ice);
}

.hero-subtitle {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 400;
    font-size: clamp(1.5rem, 4vw, 3rem);
    color: var(--metallic-blue);
    display: block;
    margin-top: 0.25rem;
}

.hero-tagline {
    font-family: 'IBM Plex Sans', sans-serif;
    font-weight: 300;
    font-size: 0.85rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--metallic-blue);
    margin-top: 1.5rem;
    opacity: 0.7;
}

/* Status cell */
.cell-status {
    grid-column: 3 / 4;
    grid-row: 1 / 2;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--steel-blue);
    animation: pulse 2s infinite;
}

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

.status-text {
    font-family: 'IBM Plex Sans', sans-serif;
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    color: var(--light-steel);
}

.status-meta {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.meta-row {
    display: flex;
    justify-content: space-between;
    font-family: 'IBM Plex Sans', sans-serif;
    font-size: 0.7rem;
    letter-spacing: 0.05em;
}

.meta-label {
    color: var(--metallic-blue);
    opacity: 0.6;
}

.meta-value {
    color: var(--light-steel);
}

/* District cell */
.cell-district {
    grid-column: 4 / 5;
    grid-row: 1 / 3;
}

.cell-title {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 500;
    font-size: 0.85rem;
    letter-spacing: 0.1em;
    color: var(--light-steel);
    margin-bottom: 1rem;
}

.cell-body {
    font-family: 'Inter', sans-serif;
    font-weight: 300;
    font-size: 0.8rem;
    line-height: 1.6;
    color: var(--metallic-blue);
    margin-bottom: 1.5rem;
}

.district-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 4px;
}

.district-block {
    aspect-ratio: 1;
    background: var(--navy);
    border: 1px solid var(--steel-blue);
    opacity: 0.3;
    transition: opacity 0.5s ease, background 0.5s ease;
}

.district-block.active {
    opacity: 1;
    background: var(--steel-blue);
}

/* Blueprint cell */
.cell-blueprint {
    grid-column: 1 / 2;
    grid-row: 2 / 4;
}

.blueprint-svg {
    width: 100%;
    height: auto;
    max-height: 300px;
    margin-top: 1rem;
}

/* Transit cell */
.cell-transit {
    grid-column: 2 / 4;
    grid-row: 2 / 3;
}

.transit-lines {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 1rem;
}

.transit-line {
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--steel-blue), transparent);
    position: relative;
    overflow: hidden;
}

.transit-line::after {
    content: '';
    position: absolute;
    top: 0;
    left: -30%;
    width: 30%;
    height: 100%;
    background: var(--light-steel);
    animation: transit-move 3s infinite linear;
}

.line-2::after { animation-delay: -1s; }
.line-3::after { animation-delay: -2s; }

@keyframes transit-move {
    0% { left: -30%; }
    100% { left: 100%; }
}

/* Data cell */
.cell-data {
    grid-column: 2 / 4;
    grid-row: 3 / 4;
}

.data-readout {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    margin-top: 0.5rem;
}

.data-line {
    font-family: 'IBM Plex Sans', sans-serif;
    font-size: 0.75rem;
    font-weight: 300;
    letter-spacing: 0.05em;
    color: var(--metallic-blue);
}

.data-val {
    color: var(--light-steel);
    font-weight: 500;
}

/* Philosophy cell */
.cell-philosophy {
    grid-column: 1 / 3;
    grid-row: 4 / 5;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 3rem;
}

.philosophy-quote {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 400;
    font-size: clamp(1rem, 2vw, 1.4rem);
    line-height: 1.5;
    color: var(--pale-blue);
    border-left: 2px solid var(--steel-blue);
    padding-left: 1.5rem;
}

.philosophy-cite {
    display: block;
    margin-top: 1rem;
    font-family: 'IBM Plex Sans', sans-serif;
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    color: var(--metallic-blue);
    opacity: 0.6;
    font-style: normal;
}

/* Materials cell */
.cell-materials {
    grid-column: 3 / 4;
    grid-row: 4 / 5;
}

.materials-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    margin-top: 0.5rem;
}

.materials-list li {
    font-family: 'Inter', sans-serif;
    font-size: 0.75rem;
    font-weight: 300;
    color: var(--metallic-blue);
}

.mat-code {
    font-family: 'IBM Plex Sans', sans-serif;
    font-weight: 500;
    color: var(--light-steel);
    margin-right: 0.5rem;
    font-size: 0.7rem;
    letter-spacing: 0.05em;
}

/* Version cell */
.cell-version {
    grid-column: 4 / 5;
    grid-row: 3 / 5;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.version-number {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: 3rem;
    color: var(--ice);
    letter-spacing: -0.02em;
}

.version-label {
    font-family: 'IBM Plex Sans', sans-serif;
    font-size: 0.65rem;
    letter-spacing: 0.15em;
    color: var(--metallic-blue);
    margin-top: 0.5rem;
    opacity: 0.6;
}

.version-progress {
    width: 100%;
    height: 2px;
    background: var(--navy);
    margin-top: 1.5rem;
    position: relative;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    width: 72%;
    background: var(--steel-blue);
    transition: width 0.5s ease;
}

.version-note {
    font-family: 'IBM Plex Sans', sans-serif;
    font-size: 0.65rem;
    color: var(--metallic-blue);
    margin-top: 0.75rem;
    opacity: 0.5;
}

/* Scan line effect */
.scan-line {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--steel-blue), transparent);
    opacity: 0.15;
    pointer-events: none;
    animation: scan 8s linear infinite;
    z-index: 100;
}

@keyframes scan {
    0% { top: 0; }
    100% { top: 100vh; }
}

/* Responsive */
@media (max-width: 900px) {
    .bento-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .cell-hero { grid-column: 1 / 3; }
    .cell-status { grid-column: 1 / 2; grid-row: auto; }
    .cell-district { grid-column: 2 / 3; grid-row: auto; }
    .cell-blueprint { grid-column: 1 / 2; grid-row: auto; }
    .cell-transit { grid-column: 2 / 3; grid-row: auto; }
    .cell-data { grid-column: 1 / 3; grid-row: auto; }
    .cell-philosophy { grid-column: 1 / 3; grid-row: auto; }
    .cell-materials { grid-column: 1 / 2; grid-row: auto; }
    .cell-version { grid-column: 2 / 3; grid-row: auto; }
}

@media (max-width: 600px) {
    .bento-grid {
        grid-template-columns: 1fr;
    }
    .cell-hero,
    .cell-philosophy,
    .cell-data { grid-column: 1 / 2; }
}