/* ==========================================
   AEROSpotter Style - Runway Brutalist Final
   ========================================== */

:root {
    --bg-page: #E5E5E5;          /* Flat industrial light gray */
    --bg-card: #FFFFFF;          /* Stark white */
    
    --yellow: #FFD200;           /* Runway yellow */
    --black: #000000;            /* Heavy black paint */
    --white: #FFFFFF;
    
    --success: #00E676;          /* Green light */
    --danger: #FF3D00;           /* Red light */
    
    --thick-border: 3px solid #000000;
    --thin-border: 1px solid #000000;
    --flat-shadow: 6px 6px 0px #000000;
    --flat-shadow-hover: 2px 2px 0px #000000;
    --shadow-color: #000000;
    
    --transition-brutal: all 0.1s cubic-bezier(0, 0, 0, 1);
}

/* Dark Theme Variables Override */
body.dark-theme {
    --bg-page: #121212;          /* Matte dark void */
    --bg-card: #1E1E1E;          /* Deep gray panels */
    --black: #FFFFFF;            /* Invert text/borders to white */
    --white: #121212;
    --yellow: #FFD200;           /* Keep iconic airport yellow */
    
    --thick-border: 3px solid #FFFFFF;
    --thin-border: 1px solid #FFFFFF;
    --flat-shadow: 6px 6px 0px #FFFFFF;  /* Set shadow to white outline instead of yellow */
    --flat-shadow-hover: 2px 2px 0px #FFFFFF;
    --shadow-color: #FFFFFF;
}

/* Dark Theme overrides to replace yellow highlights/accents with white */
body.dark-theme .step-dot.active {
    background: #FFFFFF;
}
body.dark-theme .btn-primary {
    background: #FFFFFF;
    color: #121212;
}
body.dark-theme .btn-primary * {
    color: #121212;
}
body.dark-theme .baggage-tag {
    background: #FFFFFF;
    color: #121212;
}
body.dark-theme .overlay-content p {
    background: #FFFFFF;
    color: #121212;
}
body.dark-theme .timer-bar {
    background-color: #FFFFFF;
}
body.dark-theme .app-footer a:hover {
    background-color: #FFFFFF;
    color: #121212;
}

/* Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Outfit', sans-serif;
    color: var(--black);
    user-select: none;
    -webkit-user-drag: none;
}

body {
    background-color: var(--bg-page);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    transition: background-color 0.25s ease-in-out;
}

/* Screen visibility */
.screen {
    display: none;
    opacity: 0;
    transition: opacity 0.15s ease;
    width: 100%;
}

.screen.active {
    display: flex;
    flex-direction: column;
    opacity: 1;
}

/* CRITICAL BUG FIX: Hidden utility class */
.hidden {
    display: none !important;
}

/* Header Controls (Brutalist style) */
.header-controls {
    position: fixed;
    top: 20px;
    right: 20px;
    display: flex;
    gap: 12px;
    z-index: 100;
}

.btn-ctrl {
    background: var(--bg-card);
    border: var(--thick-border);
    box-shadow: 3px 3px 0px var(--shadow-color);
    font-size: 0.95rem;
    font-weight: 900;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-brutal);
}

.btn-ctrl:hover {
    transform: translate(1px, 1px);
    box-shadow: 2px 2px 0px var(--shadow-color);
}

.btn-ctrl:active {
    transform: translate(3px, 3px);
    box-shadow: none;
}

.btn-ctrl svg {
    width: 20px;
    height: 20px;
    stroke: var(--black);
    fill: none;
}

/* App Container */
.app-container {
    width: 100%;
    max-width: 860px; /* Expanded for larger image presence */
    z-index: 10;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

/* Stable height to prevent screen jumping */
.arena-layout-stable {
    min-height: 720px; /* Stabilized height */
    display: flex;
    flex-direction: column;
}

/* Brutalist Card */
.brutalist-card {
    background: var(--bg-card);
    border: var(--thick-border);
    box-shadow: var(--flat-shadow);
    padding: 30px;
    position: relative;
    overflow: hidden;
    transition: var(--transition-brutal);
}

/* Baggage tag badge */
.baggage-tag {
    display: inline-block;
    padding: 6px 12px;
    font-size: 0.75rem;
    font-weight: 900;
    letter-spacing: 0.05em;
    background: var(--yellow);
    border: var(--thick-border);
    border-radius: 0px;
    text-transform: uppercase;
    margin-bottom: 20px;
    transform: rotate(-1deg);
    align-self: center;
}

.tag-success {
    background: var(--success);
    color: #000;
}

/* Logo & Text styling */
.logo-text {
    font-size: 3.5rem;
    font-weight: 900;
    line-height: 0.9;
    letter-spacing: -0.03em;
    text-align: center;
}

.subtitle {
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-align: center;
    margin-top: 8px;
    background: var(--black);
    color: var(--white);
    padding: 3px 8px;
    display: inline-block;
    align-self: center;
}

.mono-text {
    font-family: 'Share Tech Mono', monospace;
}

/* Brutalist Buttons */
.btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 15px 24px;
    font-size: 1.05rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: var(--thick-border);
    border-radius: 0px;
    background: var(--bg-card);
    cursor: pointer;
    box-shadow: var(--flat-shadow);
    transition: var(--transition-brutal);
    width: 100%;
}

.btn-primary {
    background: var(--yellow);
}

.btn-primary:hover {
    transform: translate(3px, 3px);
    box-shadow: var(--flat-shadow-hover);
}

.btn-primary:active {
    transform: translate(5px, 5px);
    box-shadow: none;
}

.btn-secondary:hover:not(:disabled) {
    transform: translate(3px, 3px);
    box-shadow: var(--flat-shadow-hover);
}

.btn-secondary:active:not(:disabled) {
    transform: translate(5px, 5px);
    box-shadow: none;
}

.btn-secondary:disabled {
    background: #555555;
    opacity: 0.4;
    cursor: not-allowed;
    box-shadow: none;
}

.btn-success {
    background: var(--success);
    color: #000;
}
.btn-success:hover {
    transform: translate(3px, 3px);
    box-shadow: var(--flat-shadow-hover);
}
.btn-success:active {
    transform: translate(5px, 5px);
    box-shadow: none;
}

.btn-danger {
    background: var(--danger);
    color: var(--white);
}
.btn-danger:hover {
    transform: translate(3px, 3px);
    box-shadow: var(--flat-shadow-hover);
}
.btn-danger:active {
    transform: translate(5px, 5px);
    box-shadow: none;
}

.arrow {
    font-size: 1.2rem;
    font-weight: 900;
}


/* ==========================================
   1. WELCOME SCREEN
   ========================================== */
.welcome-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 25px;
    width: 100%;
    max-width: 480px;
    margin: 0 auto;
}

.rules-box {
    width: 100%;
    background: var(--bg-page);
    border: var(--thin-border);
    padding: 18px;
    text-align: left;
}

.rules-box h3 {
    font-size: 0.9rem;
    font-weight: 900;
    margin-bottom: 12px;
    letter-spacing: 0.05em;
}

.rules-box ul {
    list-style: none;
}

.rules-box li {
    font-size: 0.85rem;
    line-height: 1.4;
    font-weight: 700;
    margin-bottom: 8px;
    display: flex;
    gap: 8px;
}

.rules-box li:last-child {
    margin-bottom: 0;
}

.rules-box .bullet {
    font-weight: 900;
}

/* ==========================================
   2. GAME ARENA
   ========================================== */
/* Steps Grid */
.steps-grid {
    display: flex;
    justify-content: space-between;
    width: 100%;
    margin-bottom: 20px;
    gap: 6px;
}

.step-dot {
    flex-grow: 1;
    height: 10px;
    border: var(--thin-border);
    background: var(--bg-card);
    transition: var(--transition-brutal);
}

.step-dot.active {
    background: var(--yellow);
    border: var(--thick-border);
}

.step-dot.correct {
    background: var(--success);
}

.step-dot.incorrect {
    background: var(--danger);
}

/* Game Card (Bigger Shutter Viewport) */
.game-card {
    width: 100%;
    height: 540px; /* Large display image */
    padding: 0;
    background: #000;
}

.game-card.locked {
    cursor: pointer;
}

/* Locked Cover Cover Overlay */
.card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 20;
    background: rgba(229, 229, 229, 0.7);
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
}

body.dark-theme .card-overlay {
    background: rgba(18, 18, 18, 0.7);
}

/* Diagonal stripes banner */
.hazard-stripe {
    width: 100%;
    height: 24px;
    background: repeating-linear-gradient(
        -45deg,
        var(--yellow),
        var(--yellow) 10px,
        #000000 10px,
        #000000 20px
    );
    border-bottom: var(--thick-border);
}

body.dark-theme .hazard-stripe {
    background: repeating-linear-gradient(
        -45deg,
        #FFFFFF,
        #FFFFFF 10px,
        #121212 10px,
        #121212 20px
    );
}

.card-overlay .hazard-stripe:last-child {
    border-bottom: none;
    border-top: var(--thick-border);
}

.overlay-content {
    text-align: center;
    padding: 20px;
}

.overlay-content h2 {
    font-size: 1.8rem;
    font-weight: 900;
    margin-bottom: 8px;
}

.overlay-content p {
    font-size: 0.95rem;
    font-weight: 900;
    background: var(--yellow);
    color: #000;
    border: var(--thick-border);
    padding: 6px 14px;
    display: inline-block;
    letter-spacing: 0.05em;
    transform: rotate(-1deg);
    box-shadow: 3px 3px 0px var(--shadow-color);
}

/* Viewport */
.image-viewport {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: #000;
}

.plane-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: filter 0.2s ease;
}

.plane-img.blurred {
    filter: blur(25px) brightness(0.4);
}

.game-card.locked .plane-img {
    filter: blur(35px) brightness(0.25);
}

/* Airport Code Image Layout overlaying main image */
.code-img {
    position: absolute;
    bottom: 25px;
    left: 50%;
    transform: translateX(-50%);
    max-height: 90px;
    z-index: 15;
    border: var(--thick-border);
    background: #FFFFFF;
    box-shadow: 4px 4px 0px var(--shadow-color);
    transition: filter 0.2s ease;
}

body.dark-theme .code-img {
    background: #1E1E1E;
}

.code-img.blurred {
    filter: blur(15px) brightness(0.4);
}

.game-card.locked .code-img {
    display: none;
}

/* Shutter text overlay */
.image-text-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.4);
}

#overlay-message {
    font-size: 2.2rem;
    font-weight: 900;
    background: var(--danger);
    color: var(--white);
    border: var(--thick-border);
    padding: 8px 24px;
    transform: rotate(-2deg);
    box-shadow: var(--flat-shadow);
}

/* Timer Section */
.timer-section {
    display: flex;
    align-items: center;
    gap: 15px;
    margin: 15px 0 20px 0;
}

.timer-lbl {
    font-size: 0.85rem;
    font-weight: 900;
}

.timer-track {
    flex-grow: 1;
    height: 18px;
    background: var(--bg-card);
    border: var(--thick-border);
    overflow: hidden;
}

.timer-bar {
    height: 100%;
    background-color: var(--yellow);
    transition: width 0.1s linear;
}

.timer-bar.warning {
    background-color: var(--yellow);
}

.timer-bar.critical {
    background-color: var(--danger);
}

.timer-numeric {
    font-size: 1.4rem;
    font-weight: 900;
    min-width: 60px;
    text-align: right;
}

.controls-panel {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* Spec Card */
.answer-card {
    padding: 20px;
    margin-bottom: 15px;
}

.answer-tag {
    font-size: 0.75rem;
    font-weight: 900;
    color: var(--black);
    opacity: 0.6;
    margin-bottom: 6px;
}

.answer-model {
    font-size: 1.8rem;
    font-weight: 900;
    line-height: 1.1;
}

.answer-simplified {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--black);
    opacity: 0.8;
    margin-top: 2px;
}

.details-divider {
    height: 3px;
    background: var(--black);
    margin: 12px 0;
}

.answer-details {
    font-size: 0.9rem;
    font-weight: 700;
    line-height: 1.4;
}

.validation-verify {
    text-align: center;
    margin-top: 5px;
}

.verify-lbl {
    display: block;
    font-size: 0.85rem;
    font-weight: 900;
    margin-bottom: 12px;
    text-align: left;
}

.validation-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    width: 100%;
}


/* ==========================================
   3. RESULTS SCREEN
   ========================================== */
.results-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 25px;
    width: 100%;
}

#confetti-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 5;
}

.results-title {
    font-size: 2.5rem;
    font-weight: 900;
    letter-spacing: -0.02em;
}

.results-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    border-top: var(--thick-border);
    border-bottom: var(--thick-border);
    padding: 25px 0;
}

.score-block {
    background: var(--bg-card);
    border: var(--thick-border);
    box-shadow: var(--flat-shadow);
    padding: 15px;
    min-width: 180px;
    text-align: center;
}

.score-block .lbl {
    font-size: 0.75rem;
    font-weight: 900;
    color: var(--black);
    opacity: 0.6;
}

.score-display {
    display: flex;
    align-items: baseline;
    justify-content: center;
    margin-top: 4px;
}

.big-num {
    font-size: 2.5rem;
    font-weight: 900;
}

.total-num {
    font-size: 1.1rem;
    font-weight: 900;
    color: var(--black);
    opacity: 0.6;
}

/* Debrief review list */
.review-section {
    width: 100%;
    text-align: left;
}

.review-section h3 {
    font-size: 1rem;
    font-weight: 900;
    border-bottom: var(--thick-border);
    padding-bottom: 8px;
    margin-bottom: 12px;
}

.debrief-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: 220px;
    overflow-y: auto;
}

.debrief-item {
    display: flex;
    align-items: center;
    border: var(--thick-border);
    background: var(--bg-card);
    padding: 8px 12px;
    gap: 12px;
    transition: var(--transition-brutal);
}

.debrief-item:hover {
    transform: translate(-2px, -2px);
    box-shadow: 3px 3px 0px var(--shadow-color);
}

.debrief-thumb-container {
    width: 50px;
    height: 35px;
    border: var(--thin-border);
    overflow: hidden;
}

.debrief-thumb {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.debrief-details {
    flex-grow: 1;
}

.debrief-model {
    font-size: 0.85rem;
    font-weight: 900;
}

.debrief-desc {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--black);
    opacity: 0.7;
}

.debrief-status {
    font-size: 0.8rem;
    font-weight: 900;
    padding: 3px 8px;
    border: var(--thin-border);
}

.debrief-status.correct {
    background: var(--success);
    color: #000;
}

.debrief-status.incorrect {
    background: var(--danger);
    color: var(--white);
}

/* Footer & Links */
.app-footer {
    padding: 25px;
    color: var(--black);
    opacity: 0.8;
    font-weight: 700;
    font-size: 0.85rem;
    text-align: center;
    border-top: var(--thick-border);
    margin-top: 20px;
    width: 100%;
}

.app-footer a {
    color: var(--black);
    text-decoration: underline;
    font-weight: 900;
    transition: background-color 0.1s ease;
}

.app-footer a:hover {
    background-color: var(--yellow);
    color: #000;
}

@media (max-width: 768px) {
    .app-container { padding: 10px; }
    .brutalist-card { padding: 15px; }
    .logo-text { font-size: 2.4rem; }
    .game-card { height: 320px; } /* responsive fallback */
    .arena-layout-stable { min-height: 580px; }
}