/* =============================================
   sbom.wiki - Retro Municipal Engineering
   Palette: High-contrast neon-on-asphalt
   Layout: Diagonal sections / Urban geography
   ============================================= */

/* --- CSS Custom Properties --- */
:root {
    --midnight-asphalt: #0a0c14;
    --deep-overpass: #1a1c24;
    --tunnel-dark: #0e1018;
    --signal-amber: #f0a030;
    --warning-red: #e83838;
    --transit-cyan: #38c8d8;
    --concrete-white: #e8e4dc;
    --fog-gray: #8890a0;
    --clearance-green: #30c060;
    --panel-dark: #252830;
    --skew-angle: -6deg;
    --skew-counter: 6deg;
}

/* --- Reset & Base --- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    background: var(--midnight-asphalt);
    color: var(--concrete-white);
    font-family: 'Source Sans 3', 'Source Sans Pro', sans-serif;
    font-weight: 400;
    font-size: clamp(0.95rem, 1.8vw, 1.15rem);
    line-height: 1.72;
    overflow-x: hidden;
}

/* --- Scanline Overlay (CRT Texture) --- */
#scanline-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
    background: repeating-linear-gradient(
        transparent,
        transparent 2px,
        rgba(0, 0, 0, 0.03) 2px,
        rgba(0, 0, 0, 0.03) 4px
    );
}

/* --- CRT Warmup Scanline --- */
#crt-scanline {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--signal-amber);
    z-index: 10000;
    opacity: 0;
    pointer-events: none;
    box-shadow: 0 0 20px rgba(240, 160, 48, 0.6), 0 0 60px rgba(240, 160, 48, 0.3);
}

#crt-scanline.active {
    opacity: 1;
    animation: crt-sweep 1200ms linear forwards;
}

@keyframes crt-sweep {
    0% { top: 0; }
    100% { top: 100vh; }
}

/* --- Infrastructure Grid Lines --- */
#grid-lines {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

.grid-line {
    position: absolute;
    top: 0;
    width: 1px;
    height: 100%;
    border-left: 1px dashed rgba(136, 144, 160, 0.06);
}

/* --- Bubble Field --- */
#bubble-field {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.bubble {
    position: absolute;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.08), transparent 50%),
                radial-gradient(circle, transparent 30%, rgba(56, 200, 216, 0.05) 100%);
    border: 1px solid rgba(56, 200, 216, 0.3);
    pointer-events: none;
    animation: bubble-rise linear infinite;
    will-change: transform;
}

@keyframes bubble-rise {
    0% {
        transform: translateY(0) translateX(0);
        opacity: 0;
    }
    5% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(-110vh) translateX(var(--drift, 20px));
        opacity: 0;
    }
}

/* --- Hero Section --- */
#hero {
    position: relative;
    width: 100%;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--midnight-asphalt);
    z-index: 10;
    overflow: hidden;
}

#hero-skyline {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 200px;
    opacity: 0;
    transition: opacity 600ms ease;
    clip-path: polygon(
        0% 100%,
        0% 60%, 3% 60%, 3% 40%, 6% 40%, 6% 55%, 8% 55%, 8% 30%,
        11% 30%, 11% 50%, 14% 50%, 14% 35%, 17% 35%, 17% 20%,
        19% 20%, 19% 45%, 22% 45%, 22% 25%, 25% 25%, 25% 50%,
        28% 50%, 28% 15%, 31% 15%, 31% 40%, 34% 40%, 34% 55%,
        37% 55%, 37% 30%, 40% 30%, 40% 10%, 43% 10%, 43% 35%,
        46% 35%, 46% 50%, 49% 50%, 49% 20%, 52% 20%, 52% 45%,
        55% 45%, 55% 25%, 58% 25%, 58% 55%, 61% 55%, 61% 30%,
        64% 30%, 64% 15%, 67% 15%, 67% 40%, 70% 40%, 70% 50%,
        73% 50%, 73% 35%, 76% 35%, 76% 55%, 79% 55%, 79% 20%,
        82% 20%, 82% 45%, 85% 45%, 85% 60%, 88% 60%, 88% 35%,
        91% 35%, 91% 50%, 94% 50%, 94% 40%, 97% 40%, 97% 55%,
        100% 55%, 100% 100%
    );
    background: linear-gradient(to top, var(--deep-overpass), var(--panel-dark));
}

#hero-skyline.visible {
    opacity: 1;
}

#hero-content {
    text-align: center;
    z-index: 2;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 800ms ease, transform 800ms ease;
}

#hero-content.visible {
    opacity: 1;
    transform: translateY(0);
}

#hero-title {
    font-family: 'Playfair Display', serif;
    font-weight: 700;
    font-size: clamp(3rem, 8vw, 7rem);
    color: var(--concrete-white);
    letter-spacing: 0.02em;
    text-shadow: 0 0 40px rgba(240, 160, 48, 0.3);
    margin-bottom: 1rem;
}

#hero-tagline {
    font-family: 'IBM Plex Mono', monospace;
    font-weight: 400;
    font-size: clamp(0.9rem, 2vw, 1.2rem);
    color: var(--signal-amber);
    min-height: 1.5em;
    letter-spacing: 0.05em;
}

.tagline-char {
    display: inline;
    opacity: 0;
    animation: char-appear 100ms forwards;
}

@keyframes char-appear {
    0% {
        opacity: 0;
        text-shadow: 0 0 10px var(--signal-amber);
    }
    50% {
        opacity: 1;
        text-shadow: 0 0 10px var(--signal-amber);
    }
    100% {
        opacity: 1;
        text-shadow: none;
    }
}

/* Hero dock transition */
#hero.docked {
    height: 0;
    min-height: 0;
    overflow: hidden;
    transition: height 800ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Skyline Header --- */
#skyline-header {
    position: sticky;
    top: 0;
    width: 100%;
    height: 15vh;
    min-height: 100px;
    max-height: 140px;
    background: var(--midnight-asphalt);
    z-index: 100;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    border-bottom: 3px solid var(--signal-amber);
    opacity: 0;
    transform: translateY(-20px);
    transition: opacity 600ms ease, transform 600ms ease;
    overflow: hidden;
}

#skyline-header.visible {
    opacity: 1;
    transform: translateY(0);
}

#skyline-nav {
    display: flex;
    align-items: flex-end;
    gap: 2rem;
    padding: 0 2rem 0.5rem;
    width: 100%;
    max-width: 1200px;
    justify-content: space-around;
}

.building-cluster {
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
    position: relative;
}

.building-cluster .building {
    width: 12px;
    height: var(--h, 50px);
    background: var(--panel-dark);
    margin: 0 1px;
    display: inline-block;
    vertical-align: bottom;
    position: relative;
}

.building-cluster:hover .building {
    background: var(--deep-overpass);
}

.district-label {
    font-family: 'Playfair Display', serif;
    font-style: italic;
    font-weight: 400;
    font-size: 0.7rem;
    color: var(--fog-gray);
    margin-top: 4px;
    white-space: nowrap;
    letter-spacing: 0.03em;
    transition: color 300ms ease;
}

.building-cluster:hover .district-label {
    color: var(--signal-amber);
}

.building-cluster.active .district-label {
    color: var(--signal-amber);
}

.building-cluster.active .building {
    background: var(--signal-amber);
}

/* Header window lights */
#header-windows {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.window-light {
    position: absolute;
    width: 2px;
    height: 2px;
    background: var(--signal-amber);
    opacity: 0;
    animation: window-blink 4s infinite;
}

@keyframes window-blink {
    0%, 40%, 100% { opacity: 0; }
    50%, 90% { opacity: 0.7; }
}

/* --- Main Content --- */
#main-content {
    position: relative;
    z-index: 5;
    padding-top: 2rem;
}

/* --- Diagonal Bands --- */
.diagonal-band {
    position: relative;
    padding: 6rem 0;
    transform: skewY(var(--skew-angle));
    background: var(--tunnel-dark);
    border-top: 3px solid rgba(240, 160, 48, 0.4);
    border-bottom: 3px solid rgba(240, 160, 48, 0.4);
    margin: 3rem 0;
    opacity: 0;
    transition: opacity 600ms ease, transform 600ms ease;
}

.diagonal-band.visible {
    opacity: 1;
}

.diagonal-band.band-alt {
    background: var(--deep-overpass);
}

.band-inner {
    transform: skewY(var(--skew-counter));
    padding: 0 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

/* --- Band Grid (3-column) --- */
.band-grid {
    display: grid;
    grid-template-columns: 1fr 2fr 1fr;
    gap: 2rem;
    align-items: start;
}

@media (max-width: 768px) {
    .band-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
}

/* --- Meta Columns --- */
.meta-col {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.meta-label {
    font-family: 'Playfair Display', serif;
    font-style: italic;
    font-weight: 400;
    font-size: 0.85rem;
    color: var(--fog-gray);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.meta-code {
    font-family: 'IBM Plex Mono', monospace;
    font-weight: 500;
    font-size: 0.8rem;
    color: var(--signal-amber);
    background: rgba(240, 160, 48, 0.08);
    border-left: 1px solid var(--signal-amber);
    padding: 0.3rem 0.6rem;
    display: inline-block;
}

.meta-timestamp {
    font-family: 'IBM Plex Mono', monospace;
    font-weight: 400;
    font-size: 0.75rem;
    color: var(--fog-gray);
}

/* --- Content Column --- */
.content-col {
    position: relative;
}

.section-heading {
    font-family: 'Playfair Display', serif;
    font-weight: 700;
    font-size: clamp(1.8rem, 3.5vw, 2.8rem);
    color: var(--signal-amber);
    letter-spacing: 0.03em;
    margin-bottom: 1.5rem;
    transform: translateY(20px);
    opacity: 0;
    transition: opacity 400ms ease, transform 400ms ease;
}

.diagonal-band.visible .section-heading {
    transform: translateY(0);
    opacity: 1;
}

.body-text {
    color: var(--concrete-white);
    margin-bottom: 1.2rem;
    font-weight: 400;
    opacity: 0;
    transition: opacity 300ms ease 120ms;
}

.diagonal-band.visible .body-text {
    opacity: 1;
}

.body-text strong,
.body-text b {
    font-weight: 600;
}

/* --- Data Block --- */
.data-block {
    margin-top: 1.5rem;
    opacity: 0;
    transform: scale(0.95);
    transition: opacity 500ms ease 240ms, transform 500ms ease 240ms;
}

.diagonal-band.visible .data-block {
    opacity: 1;
    transform: scale(1);
}

.data-block code {
    font-family: 'IBM Plex Mono', monospace;
    font-weight: 400;
    font-size: clamp(0.8rem, 1.4vw, 0.95rem);
    display: block;
    padding: 0.5rem 1rem;
    background: rgba(240, 160, 48, 0.08);
    border-left: 1px solid var(--signal-amber);
    color: var(--concrete-white);
    margin-bottom: 0.5rem;
}

.inline-code {
    font-family: 'IBM Plex Mono', monospace;
    font-weight: 400;
    font-size: 0.9em;
    background: rgba(240, 160, 48, 0.08);
    border-left: 1px solid var(--signal-amber);
    padding: 0.1rem 0.4rem;
    color: var(--transit-cyan);
}

/* --- Component Cards --- */
.component-cards {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1.5rem;
    opacity: 0;
    transform: scale(0.95);
    transition: opacity 500ms ease 240ms, transform 500ms ease 240ms;
}

.diagonal-band.visible .component-cards {
    opacity: 1;
    transform: scale(1);
}

.component-card {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 1rem;
    align-items: center;
    padding: 1rem 1.5rem;
    background: var(--midnight-asphalt);
    border-radius: 4px;
    border-left: 3px solid var(--fog-gray);
    transition: border-radius 400ms ease, border-left-width 300ms ease, border-left-color 300ms ease, background 300ms ease;
}

.component-card:hover {
    border-radius: 20px;
    border-left-width: 6px;
    border-left-color: var(--signal-amber);
    background: #0d0f17;
}

.card-name {
    font-family: 'IBM Plex Mono', monospace;
    font-weight: 500;
    color: var(--concrete-white);
}

.card-version {
    font-family: 'IBM Plex Mono', monospace;
    font-weight: 400;
    font-size: 0.85rem;
    color: var(--fog-gray);
}

.card-license {
    font-family: 'Source Sans 3', sans-serif;
    font-weight: 400;
    font-size: 0.85rem;
    color: var(--fog-gray);
}

.card-status {
    font-family: 'IBM Plex Mono', monospace;
    font-weight: 500;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.2rem 0.6rem;
    border-radius: 2px;
    text-align: center;
}

.status-safe {
    color: var(--clearance-green);
    background: rgba(48, 192, 96, 0.1);
    border: 1px solid rgba(48, 192, 96, 0.3);
}

.status-warning {
    color: var(--signal-amber);
    background: rgba(240, 160, 48, 0.1);
    border: 1px solid rgba(240, 160, 48, 0.3);
}

@media (max-width: 768px) {
    .component-card {
        grid-template-columns: 1fr 1fr;
        gap: 0.5rem;
    }
}

/* --- Dependency Tree --- */
.dep-tree {
    margin-top: 1.5rem;
    padding: 1.5rem;
    background: var(--midnight-asphalt);
    border-radius: 4px;
    opacity: 0;
    transform: scale(0.95);
    transition: opacity 500ms ease 240ms, transform 500ms ease 240ms;
}

.diagonal-band.visible .dep-tree {
    opacity: 1;
    transform: scale(1);
}

.dep-node {
    padding-left: 1.5rem;
    position: relative;
}

.dep-node::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 1rem;
    height: 50%;
    border-left: 2px solid var(--transit-cyan);
    border-bottom: 2px solid var(--transit-cyan);
}

.dep-direct > span {
    font-family: 'IBM Plex Mono', monospace;
    font-weight: 500;
    color: var(--signal-amber);
    font-size: 0.95rem;
}

.dep-direct::before {
    border-color: var(--signal-amber);
}

.dep-children {
    margin-top: 0.5rem;
    margin-left: 1rem;
}

.dep-transitive > span {
    font-family: 'IBM Plex Mono', monospace;
    font-weight: 400;
    color: var(--fog-gray);
    font-size: 0.85rem;
}

/* --- Vulnerability Alerts --- */
.vuln-alerts {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    margin-top: 1.5rem;
    opacity: 0;
    transform: scale(0.95);
    transition: opacity 500ms ease 240ms, transform 500ms ease 240ms;
}

.diagonal-band.visible .vuln-alerts {
    opacity: 1;
    transform: scale(1);
}

.vuln-alert {
    display: grid;
    grid-template-columns: 1fr 2fr 1fr;
    gap: 1rem;
    align-items: center;
    padding: 1rem 1.5rem;
    border-radius: 4px;
    transition: border-radius 400ms ease;
}

.vuln-alert:hover {
    border-radius: 20px;
}

.vuln-critical {
    background: rgba(232, 56, 56, 0.1);
    border-left: 4px solid var(--warning-red);
}

.vuln-high {
    background: rgba(240, 160, 48, 0.08);
    border-left: 4px solid var(--signal-amber);
}

.vuln-medium {
    background: rgba(56, 200, 216, 0.06);
    border-left: 4px solid var(--transit-cyan);
}

.vuln-id {
    font-family: 'IBM Plex Mono', monospace;
    font-weight: 500;
    font-size: 0.85rem;
    color: var(--concrete-white);
}

.vuln-name {
    font-family: 'Source Sans 3', sans-serif;
    font-weight: 600;
    color: var(--concrete-white);
}

.vuln-severity {
    font-family: 'IBM Plex Mono', monospace;
    font-weight: 500;
    font-size: 0.8rem;
    text-align: right;
}

.vuln-critical .vuln-severity {
    color: var(--warning-red);
}

.vuln-high .vuln-severity {
    color: var(--signal-amber);
}

.vuln-medium .vuln-severity {
    color: var(--transit-cyan);
}

@media (max-width: 768px) {
    .vuln-alert {
        grid-template-columns: 1fr;
        gap: 0.3rem;
    }
}

/* --- Standards Grid --- */
.standards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 1.5rem;
    opacity: 0;
    transform: scale(0.95);
    transition: opacity 500ms ease 240ms, transform 500ms ease 240ms;
}

.diagonal-band.visible .standards-grid {
    opacity: 1;
    transform: scale(1);
}

@media (max-width: 768px) {
    .standards-grid {
        grid-template-columns: 1fr;
    }
}

.standard-card {
    padding: 1.5rem;
    background: var(--midnight-asphalt);
    border-radius: 4px;
    border-left: 3px solid var(--transit-cyan);
    transition: border-radius 400ms ease, border-left-width 300ms ease, border-left-color 300ms ease;
}

.standard-card:hover {
    border-radius: 20px;
    border-left-width: 6px;
    border-left-color: var(--signal-amber);
}

.standard-name {
    font-family: 'Playfair Display', serif;
    font-weight: 700;
    font-size: 1.3rem;
    color: var(--signal-amber);
    margin-bottom: 0.3rem;
}

.standard-org {
    font-family: 'IBM Plex Mono', monospace;
    font-weight: 400;
    font-size: 0.8rem;
    color: var(--transit-cyan);
    margin-bottom: 0.8rem;
}

.standard-desc {
    font-family: 'Source Sans 3', sans-serif;
    font-weight: 400;
    font-size: 0.9rem;
    color: var(--fog-gray);
    line-height: 1.6;
}

/* --- Chain Steps --- */
.chain-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    margin-top: 2rem;
    flex-wrap: wrap;
    opacity: 0;
    transform: scale(0.95);
    transition: opacity 500ms ease 240ms, transform 500ms ease 240ms;
}

.diagonal-band.visible .chain-steps {
    opacity: 1;
    transform: scale(1);
}

.chain-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1rem 1.5rem;
    background: var(--midnight-asphalt);
    border-radius: 4px;
    border: 1px solid var(--panel-dark);
    transition: border-color 300ms ease, border-radius 400ms ease;
}

.chain-step:hover {
    border-color: var(--signal-amber);
    border-radius: 16px;
}

.step-num {
    font-family: 'Playfair Display', serif;
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--signal-amber);
}

.step-label {
    font-family: 'IBM Plex Mono', monospace;
    font-weight: 400;
    font-size: 0.8rem;
    color: var(--fog-gray);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 0.3rem;
}

.chain-connector {
    width: 30px;
    height: 2px;
    background: var(--signal-amber);
    opacity: 0.5;
}

@media (max-width: 600px) {
    .chain-connector {
        width: 2px;
        height: 20px;
    }
    .chain-steps {
        flex-direction: column;
    }
}

/* --- Junction Markers --- */
.junction {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    height: 80px;
}

.junction-svg {
    width: 60px;
    height: 60px;
    transform: scale(0);
    transition: transform 500ms cubic-bezier(0.34, 1.56, 0.64, 1);
    cursor: pointer;
}

.junction.visible .junction-svg {
    transform: scale(1);
}

.junction-ring {
    fill: none;
    stroke-width: 2;
}

.junction-ring-outer {
    stroke: var(--signal-amber);
}

.junction-ring-inner {
    stroke: var(--transit-cyan);
}

.junction-icon {
    fill: none;
    stroke: var(--concrete-white);
    stroke-width: 1.5;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.junction-svg:hover .junction-ring-outer {
    stroke: var(--warning-red);
    transition: stroke 300ms ease;
}

.junction-svg:hover .junction-ring-inner {
    stroke: var(--signal-amber);
    transition: stroke 300ms ease;
}

/* Junction hover morph to rounded rect */
.junction:hover .junction-svg {
    clip-path: inset(0 0 0 0 round 12px);
    transition: clip-path 600ms cubic-bezier(0.34, 1.56, 0.64, 1), transform 500ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* --- Underpass Footer --- */
#underpass-footer {
    position: relative;
    z-index: 5;
    background: var(--midnight-asphalt);
    padding: 4rem 2rem 3rem;
    perspective: 800px;
    margin-top: 4rem;
    border-top: 3px solid var(--panel-dark);
}

#underpass-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.3), transparent);
    pointer-events: none;
}

.footer-inner {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    transform: rotateX(2deg);
    position: relative;
    z-index: 1;
}

.route-map {
    margin-bottom: 2rem;
}

.route-svg {
    width: 100%;
    max-width: 600px;
    height: 60px;
}

.route-stop {
    fill: var(--panel-dark);
    stroke: var(--signal-amber);
    stroke-width: 2;
    cursor: pointer;
    transition: fill 300ms ease;
}

.route-stop:hover,
.route-stop.active {
    fill: var(--signal-amber);
}

.route-label {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 8px;
    fill: var(--fog-gray);
    text-anchor: middle;
}

.footer-text {
    font-family: 'Playfair Display', serif;
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--concrete-white);
    margin-bottom: 0.5rem;
}

.footer-sub {
    font-family: 'Source Sans 3', sans-serif;
    font-weight: 400;
    font-size: 0.85rem;
    color: var(--fog-gray);
}