/* ============================================================
   GENPATSU.IO - Nuclear Monitoring Station
   Terminal-Industrial Control Room Aesthetic
   ============================================================ */

/* Google Fonts are loaded in index.html:
   Share Tech Mono, IBM Plex Mono (300,400), VT323 */

/* ---- CSS Custom Properties ---- */
:root {
    --bg-primary: #0A0C0F;
    --bg-secondary: #111820;
    --bg-tertiary: #1A2332;
    --phosphor-green: #39FF14;
    --phosphor-green-dim: #1B5E0A;
    --amber-warning: #FFB627;
    --amber-warning-dim: #7A5400;
    --red-alert: #FF2D2D;
    --red-alert-dim: #6B1010;
    --cool-gray: #B8C4D0;
    --dimmed-gray: #6B7B8D;
    --instrument-white: #E8ECF0;
    --conduit-line: #2A3A4A;

    --font-display: 'Share Tech Mono', monospace;
    --font-body: 'IBM Plex Mono', monospace;
    --font-data: 'VT323', monospace;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-primary);
    color: var(--cool-gray);
    font-family: var(--font-body);
    font-weight: 400;
    font-size: clamp(0.9rem, 1.4vw, 1.05rem);
    line-height: 1.78;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* ---- Boot Sequence Overlay ---- */
#boot-overlay {
    position: fixed;
    inset: 0;
    z-index: 10000;
    background: #000000;
    padding: 40px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    transition: opacity 0.6s ease-out;
}

#boot-overlay.fade-out {
    opacity: 0;
    pointer-events: none;
}

#boot-overlay.hidden {
    display: none;
}

#boot-cursor {
    width: 10px;
    height: 20px;
    background: var(--phosphor-green);
    animation: blink-cursor 0.6s infinite step-end;
    margin-bottom: 10px;
}

@keyframes blink-cursor {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

#boot-title {
    font-family: var(--font-display);
    font-size: clamp(1rem, 2vw, 1.4rem);
    color: var(--phosphor-green);
    letter-spacing: 0.08em;
    white-space: pre;
    margin-bottom: 16px;
    min-height: 1.6em;
}

#boot-log {
    font-family: var(--font-data);
    font-size: clamp(0.7rem, 1vw, 0.85rem);
    color: var(--phosphor-green-dim);
    letter-spacing: 0.15em;
    line-height: 1.5;
    overflow: hidden;
    max-height: 60vh;
    white-space: pre-wrap;
    word-break: break-all;
}

/* ---- HUD Container (Three-Column Layout) ---- */
#hud-container {
    display: grid;
    grid-template-columns: minmax(200px, 1fr) minmax(0, 3fr) minmax(200px, 1fr);
    min-height: 100vh;
    gap: 0;
    transition: opacity 0.6s ease-out;
}

#hud-container.hud-hidden {
    opacity: 0;
}

#hud-container.hud-visible {
    opacity: 1;
}

/* ---- Instrument Columns (Left & Right) ---- */
.instrument-column {
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    border-right: 1px solid var(--conduit-line);
    scrollbar-width: thin;
    scrollbar-color: var(--conduit-line) var(--bg-primary);
}

#left-column {
    border-right: 1px solid var(--conduit-line);
    border-left: none;
    transform: translateX(-100%);
    transition: transform 0.5s ease-out;
}

#left-column.slide-in {
    transform: translateX(0);
}

#right-column {
    border-left: 1px solid var(--conduit-line);
    border-right: none;
    transform: translateX(100%);
    transition: transform 0.5s ease-out;
}

#right-column.slide-in {
    transform: translateX(0);
}

/* ---- Panel Base ---- */
.panel {
    background: var(--bg-secondary);
    border: 1px solid var(--conduit-line);
    padding: 12px;
    position: relative;
}

.panel-label {
    font-family: var(--font-display);
    font-size: clamp(0.65rem, 1vw, 0.8rem);
    color: var(--dimmed-gray);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 10px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--conduit-line);
}

/* ---- Status Panel ---- */
.status-panel {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.status-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 3px 0;
}

.status-label {
    font-family: var(--font-data);
    font-size: clamp(0.7rem, 1vw, 0.85rem);
    color: var(--dimmed-gray);
    letter-spacing: 0.15em;
}

.status-value {
    font-family: var(--font-data);
    font-size: clamp(0.7rem, 1vw, 0.85rem);
    letter-spacing: 0.15em;
}

.status-value.green {
    color: var(--phosphor-green);
}

.status-value.amber {
    color: var(--amber-warning);
}

.status-value.red {
    color: var(--red-alert);
}

/* ---- Reactor Navigation Schematic ---- */
.nav-panel {
    flex-grow: 1;
    min-height: 280px;
}

#reactor-nav {
    width: 100%;
    height: auto;
    max-height: 360px;
}

.nav-zone {
    cursor: pointer;
    transition: all 0.3s ease-out;
}

.nav-zone .zone-outline {
    transition: stroke 0.3s ease-out, filter 0.3s ease-out;
}

.nav-zone:hover .zone-outline,
.nav-zone.active .zone-outline {
    stroke: var(--amber-warning);
    filter: drop-shadow(0 0 4px rgba(255, 182, 39, 0.4));
}

.nav-zone:hover .nav-label,
.nav-zone.active .nav-label {
    fill: var(--amber-warning);
}

.nav-zone:hover .nav-label-jp,
.nav-zone.active .nav-label-jp {
    fill: var(--amber-warning);
    opacity: 1;
}

.nav-zone:active .zone-outline {
    stroke: var(--red-alert);
}

.nav-label {
    font-family: 'Share Tech Mono', monospace;
    font-size: 10px;
    fill: var(--dimmed-gray);
    letter-spacing: 0.08em;
    transition: fill 0.3s ease-out;
}

.nav-label-jp {
    font-family: var(--font-body);
    font-size: 8px;
    fill: var(--dimmed-gray);
    opacity: 0.6;
    transition: fill 0.3s ease-out, opacity 0.3s ease-out;
}

/* ---- Gauges ---- */
.gauge-panel {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.gauge {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.gauge-svg {
    width: 100%;
    max-width: 120px;
    height: auto;
}

.gauge-readout {
    font-family: var(--font-data);
    font-size: clamp(0.9rem, 1.4vw, 1.2rem);
    color: var(--phosphor-green);
    letter-spacing: 0.15em;
    text-align: center;
}

.gauge-ticks line {
    transition: stroke 0.3s ease-out;
}

#depth-needle,
#rad-needle,
#containment-needle {
    transition: transform 0.5s ease-out;
    transform-origin: 60px 60px;
}

#depth-arc {
    transition: stroke-dashoffset 0.5s ease-out;
}

/* ---- Central Content Area ---- */
#central-content {
    position: relative;
    padding: 0 40px;
    overflow: hidden;
}

/* ---- Circuit Trace Background ---- */
.circuit-bg {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

.circuit-trace {
    stroke: var(--conduit-line);
    stroke-width: 1;
    fill: none;
    transition: stroke 0.8s ease-out;
}

.circuit-trace.energized {
    stroke: var(--phosphor-green);
    filter: drop-shadow(0 0 2px rgba(57, 255, 20, 0.3));
}

.circuit-node {
    fill: var(--conduit-line);
    transition: fill 0.8s ease-out;
}

.circuit-node.energized {
    fill: var(--phosphor-green);
    filter: drop-shadow(0 0 3px rgba(57, 255, 20, 0.5));
}

/* ---- Content Sections ---- */
.content-section {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    padding: 60px 0;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

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

/* ---- Kanji Watermark ---- */
.kanji-watermark {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 40vh;
    font-family: serif;
    color: var(--bg-secondary);
    pointer-events: none;
    z-index: 0;
    line-height: 1;
    opacity: 0;
    transition: opacity 0.8s ease-out;
}

.content-section.visible .kanji-watermark {
    opacity: 1;
}

/* ---- Section Headers ---- */
.section-header {
    position: relative;
    z-index: 2;
    margin-bottom: 40px;
}

.section-id {
    font-family: var(--font-data);
    font-size: clamp(0.8rem, 1.2vw, 1rem);
    color: var(--dimmed-gray);
    letter-spacing: 0.15em;
    display: block;
    margin-bottom: 8px;
}

.section-header h1,
.section-header h2 {
    font-family: var(--font-display);
    font-weight: 400;
    color: var(--phosphor-green);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin: 0;
}

.section-header h1 {
    font-size: clamp(1.6rem, 3vw, 3rem);
}

.section-header h2 {
    font-size: clamp(1.3rem, 2.5vw, 2.2rem);
}

.section-subtitle {
    font-family: var(--font-body);
    font-size: clamp(0.8rem, 1.2vw, 1rem);
    color: var(--dimmed-gray);
    letter-spacing: 0.05em;
    display: block;
    margin-top: 8px;
}

/* ---- Content Blocks ---- */
.content-block {
    position: relative;
    z-index: 2;
    max-width: 680px;
    margin-bottom: 40px;
}

.content-block p {
    margin-bottom: 1.4em;
    color: var(--cool-gray);
    font-weight: 400;
}

.content-block p:last-child {
    margin-bottom: 0;
}

/* ---- Reactor Hero Diagram ---- */
.reactor-hero {
    position: relative;
    z-index: 2;
    margin: 40px auto;
    max-width: 800px;
}

.reactor-diagram {
    width: 100%;
    height: auto;
}

.draw-line {
    stroke-dasharray: 1000;
    stroke-dashoffset: 1000;
    transition: stroke-dashoffset 1.5s ease-out;
}

.reactor-diagram.drawn .draw-line {
    stroke-dashoffset: 0;
}

.diagram-label {
    font-family: 'VT323', monospace;
    font-size: 12px;
    fill: var(--dimmed-gray);
    letter-spacing: 0.15em;
}

.diagram-label-jp {
    font-family: var(--font-body);
    font-size: 9px;
    fill: var(--dimmed-gray);
    opacity: 0.7;
}

.data-label {
    font-family: 'VT323', monospace;
    font-size: 11px;
    fill: var(--dimmed-gray);
    letter-spacing: 0.1em;
}

/* ---- Gauge Clusters ---- */
.gauge-cluster {
    position: relative;
    z-index: 2;
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    justify-content: center;
    margin: 40px 0;
    padding: 20px;
    border: 1px solid var(--conduit-line);
    background: rgba(17, 24, 32, 0.6);
}

.gauge-unit {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    min-width: 100px;
}

.mini-gauge {
    width: 90px;
    height: 90px;
}

.gauge-needle {
    transform-origin: 50px 50px;
    transition: transform 1s ease-out;
}

.gauge-label {
    font-family: var(--font-data);
    font-size: clamp(0.7rem, 1vw, 0.85rem);
    color: var(--dimmed-gray);
    letter-spacing: 0.15em;
    text-align: center;
}

.gauge-value {
    font-family: var(--font-data);
    font-size: clamp(1rem, 1.5vw, 1.3rem);
    color: var(--phosphor-green);
    letter-spacing: 0.15em;
    text-align: center;
}

/* ---- Cable Conduit Dividers ---- */
.conduit-divider {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    gap: 3px;
    padding: 30px 0;
    overflow: hidden;
}

.conduit-line {
    height: 1px;
    background: var(--conduit-line);
    width: 0;
    transition: width 0.3s ease-out;
}

.conduit-divider.animate .conduit-line {
    width: 100%;
}

.conduit-line:nth-child(1) { transition-delay: 0ms; }
.conduit-line:nth-child(2) { transition-delay: 40ms; }
.conduit-line:nth-child(3) { transition-delay: 80ms; }
.conduit-line:nth-child(4) { transition-delay: 120ms; }
.conduit-line:nth-child(5) { transition-delay: 160ms; }
.conduit-line:nth-child(6) { transition-delay: 200ms; }
.conduit-line:nth-child(7) { transition-delay: 240ms; }
.conduit-line:nth-child(8) { transition-delay: 280ms; }

/* ---- Data Display Panels ---- */
.data-display {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin: 30px 0;
}

.data-panel {
    background: var(--bg-secondary);
    border: 1px solid var(--conduit-line);
    padding: 16px;
}

.data-panel.wide-panel {
    grid-column: 1 / -1;
}

.data-panel-label {
    font-family: var(--font-display);
    font-size: clamp(0.65rem, 0.9vw, 0.8rem);
    color: var(--dimmed-gray);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    display: block;
    margin-bottom: 12px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--conduit-line);
}

/* ---- Bar Chart ---- */
.bar-chart {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.bar-item {
    display: grid;
    grid-template-columns: 100px 1fr 80px;
    gap: 10px;
    align-items: center;
}

.bar-label {
    font-family: var(--font-data);
    font-size: clamp(0.7rem, 1vw, 0.85rem);
    color: var(--dimmed-gray);
    letter-spacing: 0.15em;
}

.bar-track {
    height: 6px;
    background: var(--bg-tertiary);
    position: relative;
    overflow: hidden;
}

.bar-fill {
    height: 100%;
    background: var(--phosphor-green);
    transition: width 1s ease-out;
    box-shadow: 0 0 6px rgba(57, 255, 20, 0.3);
}

.bar-value {
    font-family: var(--font-data);
    font-size: clamp(0.7rem, 1vw, 0.85rem);
    color: var(--phosphor-green);
    letter-spacing: 0.15em;
    text-align: right;
}

/* ---- Status Grid (Indicator Lights) ---- */
.status-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 8px;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 4px 0;
    font-family: var(--font-data);
    font-size: clamp(0.7rem, 0.9vw, 0.8rem);
    color: var(--dimmed-gray);
    letter-spacing: 0.1em;
}

.indicator-dot {
    width: 8px;
    height: 8px;
    border-radius: 0;
    flex-shrink: 0;
}

.green-status .indicator-dot {
    background: var(--phosphor-green);
    box-shadow: 0 0 6px rgba(57, 255, 20, 0.5);
}

.amber-status .indicator-dot {
    background: var(--amber-warning);
    box-shadow: 0 0 6px rgba(255, 182, 39, 0.5);
}

.red-status .indicator-dot {
    background: var(--red-alert);
    box-shadow: 0 0 6px rgba(255, 45, 45, 0.5);
}

.green-status span:last-child { color: var(--phosphor-green); }
.amber-status span:last-child { color: var(--amber-warning); }
.red-status span:last-child { color: var(--red-alert); }

/* ---- Parameter List ---- */
.param-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.param-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 4px 0;
    border-bottom: 1px solid rgba(42, 58, 74, 0.4);
}

.param-row:last-child {
    border-bottom: none;
}

.param-name {
    font-family: var(--font-data);
    font-size: clamp(0.7rem, 1vw, 0.85rem);
    color: var(--dimmed-gray);
    letter-spacing: 0.15em;
}

.param-value {
    font-family: var(--font-data);
    font-size: clamp(0.8rem, 1.2vw, 1rem);
    color: var(--phosphor-green);
    letter-spacing: 0.15em;
}

.param-value.amber-text {
    color: var(--amber-warning);
}

/* ---- Area Chart ---- */
.area-chart {
    width: 100%;
    height: auto;
}

.chart-label {
    font-family: 'VT323', monospace;
    font-size: 10px;
    fill: var(--dimmed-gray);
    letter-spacing: 0.1em;
}

/* ---- Event Log ---- */
.event-log-panel {
    flex-grow: 1;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.event-log {
    flex-grow: 1;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    gap: 2px;
    font-family: var(--font-data);
    font-size: clamp(0.65rem, 0.9vw, 0.75rem);
    letter-spacing: 0.1em;
    line-height: 1.6;
}

.log-entry {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    padding: 1px 0;
    opacity: 0;
    animation: fadeInEntry 0.3s ease-out forwards;
}

@keyframes fadeInEntry {
    from { opacity: 0; transform: translateY(-4px); }
    to { opacity: 1; transform: translateY(0); }
}

.log-entry .log-timestamp {
    color: var(--dimmed-gray);
}

.log-entry .log-system {
    color: var(--dimmed-gray);
}

.log-entry.log-nominal .log-system { color: var(--phosphor-green); }
.log-entry.log-nominal .log-message { color: var(--phosphor-green-dim); }

.log-entry.log-advisory .log-system { color: var(--amber-warning); }
.log-entry.log-advisory .log-message { color: var(--amber-warning-dim); }

.log-entry.log-critical .log-system { color: var(--red-alert); }
.log-entry.log-critical .log-message { color: var(--red-alert-dim); }

/* ---- Footer ---- */
.site-footer {
    position: relative;
    z-index: 2;
    padding: 40px 0 60px;
}

.footer-divider {
    margin-bottom: 20px;
}

.footer-content {
    display: flex;
    flex-direction: column;
    gap: 4px;
    align-items: center;
    text-align: center;
}

.footer-label {
    font-family: var(--font-data);
    font-size: clamp(0.7rem, 1vw, 0.85rem);
    color: var(--dimmed-gray);
    letter-spacing: 0.15em;
}

.footer-label.dim-text {
    color: var(--conduit-line);
    font-family: var(--font-body);
    font-size: clamp(0.7rem, 0.9vw, 0.8rem);
    margin-top: 8px;
}

/* ---- Mobile Drawer ---- */
.mobile-drawer {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 5000;
    background: var(--bg-secondary);
    border-top: 1px solid var(--conduit-line);
    transform: translateY(calc(100% - 44px));
    transition: transform 0.3s ease-out;
}

.mobile-drawer.open {
    transform: translateY(0);
}

.drawer-toggle {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translate(-50%, -100%);
    background: var(--bg-secondary);
    border: 1px solid var(--conduit-line);
    border-bottom: none;
    padding: 8px 24px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    gap: 3px;
    align-items: center;
}

.toggle-bar {
    width: 20px;
    height: 2px;
    background: var(--dimmed-gray);
    transition: background 0.3s ease-out;
}

.drawer-toggle:hover .toggle-bar {
    background: var(--amber-warning);
}

.drawer-tabs {
    display: flex;
    border-bottom: 1px solid var(--conduit-line);
}

.drawer-tab {
    flex: 1;
    padding: 10px;
    background: transparent;
    border: none;
    font-family: var(--font-display);
    font-size: 0.75rem;
    color: var(--dimmed-gray);
    letter-spacing: 0.08em;
    cursor: pointer;
    text-align: center;
    transition: color 0.3s ease-out, background 0.3s ease-out;
}

.drawer-tab.active {
    color: var(--phosphor-green);
    background: var(--bg-tertiary);
}

.drawer-tab:hover {
    color: var(--amber-warning);
}

.drawer-content {
    padding: 12px;
    max-height: 50vh;
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--conduit-line) var(--bg-secondary);
}

.drawer-content.hidden {
    display: none;
}

/* ---- Interactive Hover/Active States ---- */
a, button, .nav-zone, [data-section] {
    transition: color 0.3s ease-out, border-color 0.3s ease-out;
}

a:hover, button:hover {
    color: var(--amber-warning);
}

/* Click flash effect is handled in JS via class */
.click-flash {
    animation: flash-red 0.1s ease-out;
}

@keyframes flash-red {
    0% { filter: brightness(1); }
    50% { filter: brightness(1.5) hue-rotate(-60deg); }
    100% { filter: brightness(1); }
}

/* ---- Scrollbar Styling ---- */
::-webkit-scrollbar {
    width: 4px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--conduit-line);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--dimmed-gray);
}

/* ---- Responsive: Tablet ---- */
@media (max-width: 1024px) {
    #hud-container {
        grid-template-columns: 180px 1fr 180px;
    }

    #central-content {
        padding: 0 24px;
    }

    .bar-item {
        grid-template-columns: 80px 1fr 60px;
    }
}

/* ---- Responsive: Mobile ---- */
@media (max-width: 768px) {
    #hud-container {
        grid-template-columns: 1fr;
    }

    .instrument-column {
        display: none;
    }

    .mobile-drawer {
        display: block;
    }

    #central-content {
        padding: 0 16px;
        padding-bottom: 60px;
    }

    .content-section {
        min-height: auto;
        padding: 40px 0;
    }

    .gauge-cluster {
        gap: 16px;
        padding: 16px;
    }

    .gauge-unit {
        min-width: 80px;
    }

    .mini-gauge {
        width: 70px;
        height: 70px;
    }

    .reactor-hero {
        margin: 20px auto;
    }

    .data-display {
        grid-template-columns: 1fr;
    }

    .bar-item {
        grid-template-columns: 70px 1fr 55px;
        gap: 6px;
    }

    .status-grid {
        grid-template-columns: 1fr;
    }

    .kanji-watermark {
        font-size: 25vh;
    }

    .section-header h1 {
        font-size: clamp(1.2rem, 5vw, 2rem);
    }

    .section-header h2 {
        font-size: clamp(1.1rem, 4vw, 1.6rem);
    }

    .conduit-divider {
        padding: 20px 0;
    }
}

/* ---- Utility / Atmosphere ---- */
.scanline-overlay {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 9999;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(0, 0, 0, 0.03) 2px,
        rgba(0, 0, 0, 0.03) 4px
    );
}

/* Subtle CRT flicker effect */
@keyframes crt-flicker {
    0% { opacity: 1; }
    3% { opacity: 0.97; }
    6% { opacity: 1; }
    89% { opacity: 1; }
    92% { opacity: 0.98; }
    100% { opacity: 1; }
}

#hud-container.hud-visible {
    animation: crt-flicker 8s infinite;
}