/* ============================================
   HIDE IN PLAIN SIGHT - Stealth Game Styles
   ============================================ */

:root {
    --bg: #080c08;
    --surface: #0f1a0f;
    --surface-el: #1a2e1a;
    --surface-hi: #2a4a2a;
    --primary: #00ff88;
    --primary-dim: #00aa55;
    --primary-glow: rgba(0, 255, 136, 0.25);
    --secondary: #44aaff;
    --accent: #ffcc00;
    --danger: #ff3344;
    --danger-glow: rgba(255, 51, 68, 0.3);
    --warning: #ff9900;
    --text: #e0ffe0;
    --text-dim: #99bb99;
    --text-muted: #557755;
    --radius: 8px;
    --radius-lg: 16px;
    --transition: 0.25s ease;
}

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

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    overflow: hidden;
    width: 100vw;
    height: 100vh;
    user-select: none;
    -webkit-user-select: none;
}

/* ---- SCREENS ---- */
.screen {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 10;
}
.screen.active {
    display: flex;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ---- MAIN MENU ---- */
.menu-signature {
    position: absolute;
    top: 1.25rem;
    right: 1.5rem;
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 0.25em;
    text-transform: lowercase;
    color: var(--primary);
    opacity: 0.85;
    text-shadow: 0 0 12px var(--primary-glow);
    pointer-events: none;
}

#screen-menu {
    background: radial-gradient(ellipse at 50% 30%, #0a1f0a 0%, var(--bg) 70%);
}

.menu-container { text-align: center; }

.game-title {
    font-size: clamp(2.5rem, 7vw, 5rem);
    font-weight: 900;
    letter-spacing: 0.05em;
    line-height: 1.15;
    margin-bottom: 0.3em;
    color: var(--text);
    text-shadow: 0 0 40px var(--primary-glow);
}

.game-title span {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 0 20px var(--primary-glow));
}

.subtitle {
    color: var(--text-muted);
    font-size: 1rem;
    margin-bottom: 2.5rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
}

.menu-buttons {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    align-items: center;
}

/* ---- BUTTONS ---- */
.btn {
    font-family: inherit;
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    padding: 0.85em 2.5em;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all var(--transition);
    min-width: 220px;
    text-transform: uppercase;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-dim), var(--primary));
    color: #000;
    box-shadow: 0 4px 15px var(--primary-glow);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px var(--primary-glow);
}
.btn-primary:active { transform: translateY(0); }

.btn-secondary {
    background: var(--surface-el);
    color: var(--text);
    border: 2px solid var(--surface-hi);
}
.btn-secondary:hover {
    border-color: var(--secondary);
    transform: translateY(-2px);
}

.btn-ghost {
    background: transparent;
    color: var(--text-muted);
    border: 1px solid transparent;
}
.btn-ghost:hover {
    color: var(--text);
    border-color: var(--surface-hi);
}

/* ---- LEVEL SELECT ---- */
#screen-levels {
    background: radial-gradient(ellipse at 50% 40%, #0a1f0a 0%, var(--bg) 70%);
    gap: 2rem;
    justify-content: flex-start;
    overflow-y: auto;
    padding: 3rem 1rem 5rem;
}

#screen-levels h2 {
    font-size: 1.4rem;
    letter-spacing: 0.2em;
    color: var(--text-muted);
}

.level-grid {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
    max-width: 1100px;
    flex-shrink: 0;
}

.level-card {
    width: 180px;
    padding: 1.25rem;
    background: var(--surface);
    border: 2px solid var(--surface-el);
    border-radius: var(--radius);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition);
}

.level-card:hover:not(.locked) {
    transform: translateY(-3px);
    border-color: var(--card-accent, var(--primary));
    box-shadow: 0 4px 24px var(--card-accent, var(--primary-glow));
}

.level-card.locked {
    opacity: 0.35;
    cursor: not-allowed;
}

.level-card .level-num {
    font-size: 1.8rem;
    font-weight: 900;
    color: var(--primary);
    margin-bottom: 0.2rem;
}

.level-card .level-name {
    font-size: 0.85rem;
    color: var(--text-dim);
    margin-bottom: 0.4rem;
}

.level-card .level-stars {
    color: var(--accent);
    font-size: 1rem;
    letter-spacing: 0.15em;
}

.level-card .level-enemies {
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-top: 0.3rem;
    letter-spacing: 0.05em;
}

/* ---- GAME SCREEN ---- */
#screen-game {
    z-index: 5;
    justify-content: flex-start;
    align-items: stretch;
}

#game-canvas {
    position: absolute;
    top: 0; left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

/* ---- HUD ---- */
#hud {
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 46px;
    background: linear-gradient(180deg, rgba(8,12,8,0.92), rgba(8,12,8,0.6));
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1rem;
    z-index: 20;
    border-bottom: 1px solid rgba(0,255,136,0.08);
}

.hud-left, .hud-center, .hud-right {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.hud-disguise {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    background: var(--surface-el);
    padding: 0.2em 0.7em;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 600;
}

#hud-disguise-icon { font-size: 1.1rem; }

#hud-level-name {
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    color: var(--text-muted);
    text-transform: uppercase;
}

.hud-alert {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.hud-label {
    font-size: 0.6rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    color: var(--text-muted);
}

.alert-bar-bg {
    width: 100px;
    height: 8px;
    background: var(--surface);
    border-radius: 4px;
    overflow: hidden;
    border: 1px solid var(--surface-hi);
}

.alert-bar-fill {
    height: 100%;
    width: 0%;
    background: var(--primary);
    border-radius: 3px;
    transition: width 0.15s ease, background 0.3s ease;
}

/* ---- GAME PROMPT ---- */
.game-prompt {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(8,12,8,0.85);
    backdrop-filter: blur(8px);
    padding: 0.5em 1.5em;
    border-radius: var(--radius);
    border: 1px solid rgba(0,255,136,0.15);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text);
    z-index: 20;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.2s ease;
    white-space: nowrap;
}

.game-prompt.visible { opacity: 1; }

.pause-btn {
    position: absolute;
    top: 54px;
    right: 10px;
    z-index: 20;
    background: rgba(8,12,8,0.7);
    border: 1px solid var(--surface-hi);
    color: var(--text-muted);
    font-size: 0.8rem;
    padding: 0.3em 0.5em;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.15s ease;
}

.pause-btn:hover {
    color: var(--text);
    border-color: var(--primary);
}

/* ---- RESULT SCREENS ---- */
#screen-complete, #screen-gameover, #screen-paused {
    background: rgba(8, 12, 8, 0.92);
    backdrop-filter: blur(15px);
}

.result-container {
    text-align: center;
    max-width: 400px;
}

.result-title {
    font-size: 2rem;
    margin-bottom: 1rem;
    letter-spacing: 0.05em;
    color: var(--primary);
}

.result-title.detected {
    color: var(--danger);
    text-shadow: 0 0 30px var(--danger-glow);
    animation: pulseRed 1s ease infinite;
}

@keyframes pulseRed {
    0%, 100% { text-shadow: 0 0 20px var(--danger-glow); }
    50% { text-shadow: 0 0 40px var(--danger-glow); }
}

.gameover-sub {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    font-size: 1rem;
}

.stars {
    font-size: 2.5rem;
    letter-spacing: 0.3em;
    margin-bottom: 1rem;
}

.result-details {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: 1.2rem;
    margin-bottom: 1.5rem;
    border: 1px solid var(--surface-el);
}

.result-row {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
    font-size: 0.95rem;
    border-bottom: 1px solid var(--surface-el);
}

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

.result-row span:first-child { color: var(--text-muted); }
.result-row span:last-child { font-weight: 700; }

.result-buttons {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* ---- TUTORIAL ---- */
.overlay {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(8, 12, 8, 0.92);
    backdrop-filter: blur(15px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
}

.tutorial-content {
    max-width: 480px;
    padding: 2rem;
    background: var(--surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--surface-el);
    text-align: center;
    max-height: 90vh;
    overflow-y: auto;
}

.tutorial-content h2 {
    font-size: 1.4rem;
    letter-spacing: 0.15em;
    margin-bottom: 1.2rem;
    color: var(--primary);
}

.tutorial-steps { text-align: left; margin-bottom: 1.2rem; }

.tutorial-step {
    display: flex;
    align-items: flex-start;
    gap: 0.7rem;
    margin-bottom: 0.6rem;
}

.step-num {
    width: 26px; height: 26px;
    background: var(--primary-dim);
    color: #000;
    font-weight: 900;
    font-size: 0.8rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.tutorial-step p {
    color: var(--text-dim);
    font-size: 0.85rem;
    line-height: 1.5;
    padding-top: 2px;
}

kbd {
    display: inline-block;
    padding: 0.1em 0.45em;
    font-family: inherit;
    font-size: 0.75rem;
    font-weight: 700;
    background: var(--surface-el);
    border: 1px solid var(--surface-hi);
    border-radius: 3px;
    color: var(--primary);
    margin: 0 0.15em;
}

.tutorial-enemies {
    text-align: left;
    margin-bottom: 1.2rem;
    padding: 0.8rem;
    background: var(--surface-el);
    border-radius: var(--radius);
}

.tutorial-enemies h3 {
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    color: var(--text-muted);
    margin-bottom: 0.6rem;
    text-transform: uppercase;
}

.enemy-list {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    font-size: 0.8rem;
    color: var(--text-dim);
}

.enemy-dot {
    display: inline-block;
    width: 10px; height: 10px;
    border-radius: 50%;
    margin-right: 0.3em;
    vertical-align: middle;
}

.enemy-dot.guard { background: #4488ff; }
.enemy-dot.smart { background: #aa44ff; }
.enemy-dot.dog { background: #cc8844; }
.enemy-dot.camera { background: #ff4444; }

/* ---- TOAST ---- */
.toast {
    position: fixed;
    top: 56px;
    left: 50%;
    transform: translateX(-50%) translateY(-20px);
    background: var(--surface-el);
    color: var(--text);
    padding: 0.5em 1.2em;
    border-radius: var(--radius);
    font-size: 0.85rem;
    font-weight: 600;
    border: 1px solid var(--surface-hi);
    z-index: 200;
    pointer-events: none;
    opacity: 0;
    transition: all 0.3s ease;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* ---- RESPONSIVE ---- */
@media (max-width: 768px) {
    .game-title { font-size: clamp(2rem, 10vw, 3.5rem); }
    .level-grid { gap: 0.6rem; }
    .level-card { width: 140px; padding: 1rem; }
    .alert-bar-bg { width: 70px; }
    .result-container { padding: 0 1rem; }
}