/* ============================================
   MONOPOLE.QUEST — Sci-Fi HUD / Parallax Quest
   ============================================ */

:root {
    --instrument-blue: #B0C4D8;
    --alert-pink: #FF4D6A;
    --deep-space: #0A1628;
    --mid-navy: #1A3050;
    --scanner-cyan: #00F0FF;
    --white: #FFFFFF;
    --void-black: #020814;
}

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

body {
    font-family: 'Exo 2', sans-serif;
    font-weight: 300;
    font-size: 16px;
    line-height: 1.7;
    color: var(--instrument-blue);
    background: var(--void-black);
    overflow-x: hidden;
}

/* ---- HUD Overlay ---- */

.hud-overlay {
    position: fixed;
    inset: 0;
    z-index: 100;
    pointer-events: none;
}

.hud-corner {
    position: absolute;
    width: 50px;
    height: 50px;
}

.hud-tl { top: 16px; left: 16px; }
.hud-tr { top: 16px; right: 16px; }
.hud-bl { bottom: 16px; left: 16px; }
.hud-br { bottom: 16px; right: 16px; }

.hud-bracket {
    fill: none;
    stroke: var(--scanner-cyan);
    stroke-width: 1;
    opacity: 0.3;
    stroke-dasharray: 80;
    stroke-dashoffset: 80;
    transition: stroke-dashoffset 0.8s ease-out;
}

.hud-bracket.drawn {
    stroke-dashoffset: 0;
}

/* Scan Line */
.scan-line {
    position: absolute;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--scanner-cyan);
    opacity: 0.15;
    top: 0;
    animation: scanSweep 8s linear infinite;
}

@keyframes scanSweep {
    0% { top: 0; }
    100% { top: 100%; }
}

/* Coordinate Readout */
.coord-readout {
    position: absolute;
    top: 20px;
    right: 80px;
    font-family: 'Share Tech Mono', monospace;
    font-size: 12px;
    color: var(--scanner-cyan);
    opacity: 0.6;
    letter-spacing: 0.1em;
}

/* ---- Chapters ---- */

.chapter {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 80px 60px;
    overflow: hidden;
}

.chapter-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.chapter-hero .chapter-bg {
    background: radial-gradient(ellipse at center, var(--deep-space) 0%, var(--void-black) 70%);
}

.chapter-1 .chapter-bg {
    background: linear-gradient(180deg, var(--void-black) 0%, var(--deep-space) 50%, var(--void-black) 100%);
}

.chapter-2 .chapter-bg {
    background: linear-gradient(180deg, var(--void-black) 0%, var(--mid-navy) 50%, var(--void-black) 100%);
}

.chapter-3 .chapter-bg {
    background: linear-gradient(180deg, var(--void-black) 0%, var(--deep-space) 50%, var(--void-black) 100%);
}

.chapter-4 .chapter-bg {
    background: radial-gradient(ellipse at bottom, var(--mid-navy) 0%, var(--void-black) 70%);
}

.chapter-content {
    position: relative;
    z-index: 5;
    max-width: 1000px;
    width: 100%;
}

/* ---- Hero Content ---- */

.hero-content {
    text-align: center;
}

.hero-title {
    font-family: 'Orbitron', sans-serif;
    font-weight: 500;
    font-size: 44px;
    color: var(--scanner-cyan);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    overflow: hidden;
    white-space: nowrap;
    width: 0;
    margin: 0 auto;
    border-right: 2px solid var(--scanner-cyan);
    animation: typewriter 1.2s steps(15) 0.8s forwards, blinkCursor 0.6s step-end infinite;
}

@keyframes typewriter {
    0% { width: 0; }
    100% { width: 15ch; }
}

@keyframes blinkCursor {
    50% { border-color: transparent; }
}

.hero-subtitle {
    font-family: 'Share Tech Mono', monospace;
    font-size: 14px;
    color: var(--instrument-blue);
    letter-spacing: 0.15em;
    margin-top: 20px;
    opacity: 0;
    animation: fadeIn 1s ease 2.2s forwards;
}

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

.mission-meta {
    display: flex;
    justify-content: center;
    gap: 32px;
    margin-top: 40px;
    opacity: 0;
    animation: fadeIn 1s ease 2.8s forwards;
}

.meta-item {
    font-family: 'Share Tech Mono', monospace;
    font-size: 11px;
    color: var(--scanner-cyan);
    opacity: 0.5;
    letter-spacing: 0.08em;
}

/* ---- Chapter Headers ---- */

.chapter-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 48px;
}

.chapter-number {
    font-family: 'Orbitron', sans-serif;
    font-weight: 700;
    font-size: 80px;
    color: var(--scanner-cyan);
    opacity: 0.1;
    line-height: 1;
}

.chapter-title {
    font-family: 'Orbitron', sans-serif;
    font-weight: 500;
    font-size: 28px;
    color: var(--scanner-cyan);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* ---- Story Panels ---- */

.story-panel {
    max-width: 500px;
    margin-bottom: 40px;
    opacity: 0;
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.panel-left {
    transform: translateX(-60px);
}

.panel-right {
    transform: translateX(60px);
    margin-left: auto;
}

.story-panel.in-view {
    opacity: 1;
    transform: translateX(0);
}

.panel-heading {
    font-family: 'Orbitron', sans-serif;
    font-weight: 500;
    font-size: 16px;
    color: var(--alert-pink);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 12px;
    padding-left: 16px;
    border-left: 2px solid var(--alert-pink);
}

.panel-text {
    font-family: 'Exo 2', sans-serif;
    font-weight: 300;
    font-size: 16px;
    line-height: 1.7;
    color: var(--instrument-blue);
    margin-bottom: 16px;
}

/* ---- Data Displays ---- */

.data-display {
    display: inline-flex;
    flex-direction: column;
    gap: 4px;
    padding: 12px 20px;
    border: 1px solid rgba(0, 240, 255, 0.2);
    background: rgba(0, 240, 255, 0.03);
    margin-top: 8px;
}

.data-label {
    font-family: 'Share Tech Mono', monospace;
    font-size: 10px;
    color: var(--scanner-cyan);
    opacity: 0.6;
    letter-spacing: 0.1em;
}

.data-value {
    font-family: 'Share Tech Mono', monospace;
    font-size: 18px;
    color: var(--scanner-cyan);
    letter-spacing: 0.05em;
}

/* ---- Field Lines SVG ---- */

.field-lines-svg {
    position: fixed;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
    opacity: 0.06;
}

.field-line {
    fill: none;
    stroke: var(--scanner-cyan);
    stroke-width: 0.5;
    stroke-dasharray: 2000;
    stroke-dashoffset: 2000;
    transition: stroke-dashoffset 0.1s linear;
}

/* ---- End Screen ---- */

.chapter-end {
    min-height: 60vh;
    flex-direction: column;
    text-align: center;
}

.end-text {
    font-family: 'Orbitron', sans-serif;
    font-weight: 500;
    font-size: 20px;
    color: var(--scanner-cyan);
    letter-spacing: 0.15em;
    opacity: 0.6;
    margin-bottom: 16px;
}

.end-label {
    font-family: 'Share Tech Mono', monospace;
    font-size: 12px;
    color: var(--instrument-blue);
    opacity: 0.4;
    letter-spacing: 0.1em;
}

/* ---- Responsive ---- */

@media (max-width: 768px) {
    .hero-title {
        font-size: 28px;
    }

    .chapter {
        padding: 60px 24px;
    }

    .chapter-number {
        font-size: 48px;
    }

    .chapter-title {
        font-size: 20px;
    }

    .mission-meta {
        flex-direction: column;
        gap: 8px;
    }

    .panel-left,
    .panel-right {
        margin-left: 0;
        max-width: 100%;
    }

    .coord-readout {
        display: none;
    }
}