:root {
    --primary-color: #3cb371; /* Verde sapo chaqueño */
    --primary-glow: rgba(60, 179, 113, 0.4);
    --bg-dark-glass: rgba(10, 16, 26, 0.75);
    --border-glass: rgba(255, 255, 255, 0.12);
    --text-light: #f4f6f9;
    --text-muted: #a0aec0;
    --accent-red: #ff3366;
    --accent-red-glow: rgba(255, 51, 102, 0.4);
    --accent-blue: #33a6ff;
    --accent-gold: #ffcc00;
    --accent-gold-glow: rgba(255, 204, 0, 0.4);
    --font-title: 'Cinzel', serif;
    --font-ui: 'Outfit', sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    user-select: none;
}

body {
    background-color: #03060a;
    color: var(--text-light);
    font-family: var(--font-ui);
    width: 100vw;
    height: 100vh;
    overflow: hidden;
}

#game-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

/* --- Canvas Container --- */
#canvas-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

/* --- HUD Overlay --- */
#hud {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 10;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 24px;
}

.hud-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    width: 100%;
}

.hud-left {
    display: flex;
    flex-direction: column;
    gap: 12px;
    pointer-events: auto;
}

.hud-stat-bar {
    background: var(--bg-dark-glass);
    border: 1px solid var(--border-glass);
    border-radius: 12px;
    padding: 8px 16px;
    backdrop-filter: blur(8px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    display: flex;
    flex-direction: column;
    gap: 4px;
    width: 220px;
}

.hud-label {
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
}

.hud-label i {
    font-size: 13px;
}

.hud-label i.fa-bolt {
    color: #ffcc00;
}

.hud-label i.fa-droplet {
    color: var(--accent-blue);
}

.hud-bar-bg {
    width: 100%;
    height: 8px;
    background: rgba(0, 0, 0, 0.4);
    border-radius: 4px;
    overflow: hidden;
    position: relative;
}

.hud-bar-fill {
    height: 100%;
    width: 100%;
    border-radius: 4px;
    transition: width 0.3s cubic-bezier(0.1, 0.8, 0.3, 1);
}

.hud-bar-fill.energy {
    background: linear-gradient(90deg, #ff9900, var(--accent-gold));
    box-shadow: 0 0 8px var(--accent-gold-glow);
}

.hud-bar-fill.water {
    background: linear-gradient(90deg, #0088ff, var(--accent-blue));
    box-shadow: 0 0 8px rgba(51, 166, 255, 0.5);
}

/* Center HUD: Detection Meter & Stealth Indicators */
.hud-center {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

#detection-meter {
    background: rgba(20, 5, 10, 0.85);
    border: 1px solid rgba(255, 51, 102, 0.3);
    box-shadow: 0 0 20px rgba(255, 51, 102, 0.2);
    border-radius: 16px;
    padding: 10px 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    width: 240px;
    backdrop-filter: blur(8px);
}

.detection-icon {
    font-size: 22px;
    color: var(--accent-red);
    animation: eyePulse 1.2s infinite alternate;
}

@keyframes eyePulse {
    0% { transform: scale(1); filter: drop-shadow(0 0 2px var(--accent-red)); }
    100% { transform: scale(1.15); filter: drop-shadow(0 0 10px var(--accent-red)); }
}

.detection-label {
    font-family: var(--font-title);
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 2px;
    color: var(--accent-red);
}

.detection-bar-bg {
    width: 100%;
    height: 6px;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 3px;
    overflow: hidden;
}

.detection-bar-fill {
    height: 100%;
    background: var(--accent-red);
    box-shadow: 0 0 8px var(--accent-red);
    transition: width 0.15s ease-out;
}

#hiding-indicator {
    background: rgba(10, 30, 20, 0.85);
    border: 1px solid rgba(60, 179, 113, 0.4);
    box-shadow: 0 0 15px rgba(60, 179, 113, 0.2);
    border-radius: 20px;
    padding: 6px 16px;
    backdrop-filter: blur(8px);
}

.hiding-badge {
    color: var(--primary-color);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 1px;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 8px;
}

.hud-right {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 12px;
    pointer-events: auto;
}

.hud-counter {
    background: var(--bg-dark-glass);
    border: 1px solid var(--border-glass);
    border-radius: 12px;
    padding: 10px 18px;
    backdrop-filter: blur(8px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 15px;
    font-weight: 600;
}

.counter-icon {
    color: var(--accent-gold);
    font-size: 16px;
}

.hidden-badge {
    display: none;
}

#checkpoint-display {
    background: rgba(255, 204, 0, 0.15);
    border: 1px solid var(--accent-gold);
    color: var(--accent-gold);
    box-shadow: 0 0 12px rgba(255, 204, 0, 0.25);
    border-radius: 12px;
    padding: 8px 16px;
    font-size: 12px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 1px;
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    gap: 8px;
    animation: slideInDown 0.4s cubic-bezier(0.18, 0.89, 0.32, 1.28);
}

@keyframes slideInDown {
    from { transform: translateY(-30px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

/* Quest Log Box */
.quest-log-box {
    align-self: flex-end;
    background: var(--bg-dark-glass);
    border: 1px solid var(--border-glass);
    border-radius: 14px;
    padding: 16px;
    width: 280px;
    backdrop-filter: blur(8px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    pointer-events: auto;
    margin-bottom: 12px;
}

.quest-log-box h3 {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

.quest-log-box p {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-light);
}

.quest-progress {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

#quest-progress-text {
    font-size: 11px;
    color: var(--text-muted);
}

.progress-bar-bg {
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 2px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: var(--primary-color);
    box-shadow: 0 0 6px var(--primary-glow);
    transition: width 0.4s ease;
}

/* Interactive contextual prompt */
#interaction-prompt {
    position: absolute;
    bottom: 15%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-dark-glass);
    border: 1px solid var(--border-glass);
    border-radius: 16px;
    padding: 10px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    backdrop-filter: blur(8px);
    animation: floatUp 0.3s ease-out;
}

@keyframes floatUp {
    from { transform: translate(-50%, 20px); opacity: 0; }
    to { transform: translate(-50%, 0); opacity: 1; }
}

.prompt-key {
    background: linear-gradient(135deg, #2d3748 0%, #1a202c 100%);
    border: 2px solid #4a5568;
    border-bottom-width: 5px;
    border-radius: 8px;
    padding: 4px 10px;
    font-family: var(--font-ui);
    font-weight: 800;
    font-size: 14px;
    color: #fff;
    box-shadow: 0 3px 5px rgba(0,0,0,0.3);
}

#interaction-text {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-light);
}

/* --- NPC Dialogue Screen (Glassmorphic) --- */
#dialogue-screen {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    display: flex;
    justify-content: center;
    align-items: flex-end;
    padding-bottom: 50px;
    z-index: 15;
    pointer-events: auto;
    backdrop-filter: blur(3px);
}

.dialogue-box {
    background: rgba(8, 14, 24, 0.88);
    border: 1px solid var(--border-glass);
    border-top: 3px solid var(--primary-color);
    box-shadow: 0 15px 45px rgba(0, 0, 0, 0.6), 0 0 30px rgba(60, 179, 113, 0.1);
    border-radius: 18px;
    padding: 24px 32px;
    width: 90%;
    max-width: 750px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    backdrop-filter: blur(12px);
    animation: slideUpDialogue 0.4s cubic-bezier(0.1, 0.8, 0.3, 1);
}

@keyframes slideUpDialogue {
    from { transform: translateY(40px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.dialogue-header {
    display: flex;
    align-items: center;
    gap: 16px;
}

.npc-portrait-container {
    width: 54px;
    height: 54px;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border-glass);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 26px;
}

#npc-name {
    font-family: var(--font-title);
    font-size: 20px;
    font-weight: 800;
    letter-spacing: 1px;
    color: var(--primary-color);
    margin-bottom: 0;
}

.dialogue-body {
    font-size: 16px;
    line-height: 1.6;
    color: #e2e8f0;
    min-height: 60px;
}

.dialogue-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* --- Overlay Screens (Start, Game Over, Victory) --- */
.overlay-screen {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, rgba(10, 17, 28, 0.95) 0%, rgba(3, 5, 8, 0.99) 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 20;
    pointer-events: auto;
    backdrop-filter: blur(8px);
    transition: opacity 0.5s ease;
}

.content-box {
    background: rgba(12, 19, 30, 0.82);
    border: 1px solid var(--border-glass);
    border-radius: 20px;
    padding: 48px;
    text-align: center;
    width: 90%;
    max-width: 680px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.6);
    border-top: 3px solid var(--primary-color);
    backdrop-filter: blur(12px);
    animation: fadeInBox 0.5s ease-out;
}

@keyframes fadeInBox {
    from { transform: scale(0.95); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.logo-container {
    margin-bottom: 24px;
}

.game-badge {
    background: rgba(60, 179, 113, 0.12);
    border: 1px solid rgba(60, 179, 113, 0.3);
    color: var(--primary-color);
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 2.5px;
    padding: 6px 16px;
    border-radius: 30px;
    text-transform: uppercase;
    display: inline-block;
    margin-bottom: 12px;
}

h1 {
    font-family: var(--font-title);
    font-weight: 900;
    font-size: 44px;
    color: #fff;
    letter-spacing: 3px;
    text-shadow: 0 0 20px rgba(60, 179, 113, 0.3);
    margin-bottom: 6px;
}

.divider {
    width: 80px;
    height: 3px;
    background: var(--primary-color);
    margin: 10px auto 16px;
    border-radius: 2px;
}

.subtitle {
    font-size: 17px;
    color: var(--text-muted);
    font-weight: 400;
    letter-spacing: 1px;
}

.lore {
    font-size: 15px;
    line-height: 1.6;
    margin-bottom: 28px;
    color: #cbd5e0;
}

.lore strong {
    color: var(--primary-color);
}

.start-menu-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 20px;
    text-align: left;
    margin-bottom: 32px;
}

.controls-info, .game-features {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255,255,255,0.05);
    padding: 20px;
    border-radius: 12px;
}

.controls-info h3, .game-features h3 {
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--primary-color);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.controls-info ul, .game-features ul {
    list-style: none;
    font-size: 13px;
    color: #a0aec0;
}

.controls-info li, .game-features li {
    margin-bottom: 8px;
    display: flex;
    align-items: center;
}

.controls-info li {
    justify-content: space-between;
}

.controls-info li span {
    display: flex;
    gap: 4px;
}

kbd {
    background: #2d3748;
    border: 1px solid #4a5568;
    border-bottom-width: 3px;
    border-radius: 4px;
    padding: 1px 5px;
    font-size: 10px;
    color: #fff;
}

.game-features li {
    gap: 10px;
}

.game-features li i {
    color: var(--primary-color);
}

/* Buttons */
.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, #2f8a57 100%);
    color: white;
    font-family: var(--font-title);
    font-size: 15px;
    font-weight: 800;
    letter-spacing: 1.5px;
    padding: 12px 32px;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.25s ease;
    box-shadow: 0 4px 15px rgba(60, 179, 113, 0.3);
    text-transform: uppercase;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(60, 179, 113, 0.4), 0 0 15px rgba(60, 179, 113, 0.3);
    filter: brightness(1.15);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-glass);
    color: var(--text-muted);
    font-family: var(--font-ui);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 1px;
    padding: 12px 28px;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s;
    text-transform: uppercase;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-light);
}

.btn-huge {
    padding: 16px 48px;
    font-size: 18px;
    border-radius: 14px;
}

/* Death Box specific styles */
.death-box {
    border-top-color: var(--accent-red);
    background: rgba(18, 8, 10, 0.88);
}

.death-box h2 {
    color: var(--accent-red);
    text-shadow: 0 0 15px var(--accent-red-glow);
    font-family: var(--font-title);
    font-weight: 800;
    margin-bottom: 12px;
}

.death-icon-container {
    width: 70px;
    height: 70px;
    background: rgba(255, 51, 102, 0.1);
    border: 1px solid rgba(255, 51, 102, 0.3);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 32px;
    color: var(--accent-red);
    margin: 0 auto 20px;
    animation: floatGhost 2s infinite ease-in-out;
}

@keyframes floatGhost {
    0% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
    100% { transform: translateY(0); }
}

.death-box .btn-primary {
    background: linear-gradient(135deg, var(--accent-red) 0%, #cc1e4a 100%);
    box-shadow: 0 4px 15px rgba(255, 51, 102, 0.3);
}

.death-box .btn-primary:hover {
    box-shadow: 0 8px 25px rgba(255, 51, 102, 0.4);
}

/* Victory Box specific styles */
.victory-box {
    border-top-color: var(--accent-gold);
    background: rgba(15, 17, 10, 0.88);
}

.victory-box h2 {
    color: var(--accent-gold);
    text-shadow: 0 0 15px var(--accent-gold-glow);
    font-family: var(--font-title);
    font-weight: 800;
    margin-bottom: 12px;
}

.victory-icon-container {
    width: 70px;
    height: 70px;
    background: rgba(255, 204, 0, 0.1);
    border: 1px solid rgba(255, 204, 0, 0.3);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 32px;
    color: var(--accent-gold);
    margin: 0 auto 20px;
    animation: rotateTrophy 3s infinite linear;
}

@keyframes rotateTrophy {
    0%, 100% { transform: rotate(0deg) scale(1); }
    50% { transform: rotate(10deg) scale(1.1); }
}

.stats-panel {
    display: flex;
    justify-content: center;
    gap: 30px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255,255,255,0.05);
    padding: 20px;
    border-radius: 12px;
    margin-bottom: 28px;
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-val {
    font-size: 26px;
    font-weight: 800;
    color: var(--accent-gold);
}

.stat-lbl {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
}

.victory-box .btn-primary {
    background: linear-gradient(135deg, var(--accent-gold) 0%, #b38f00 100%);
    box-shadow: 0 4px 15px rgba(255, 204, 0, 0.3);
}

.victory-box .btn-primary:hover {
    box-shadow: 0 8px 25px rgba(255, 204, 0, 0.4);
}

/* Global Helpers */
.hidden {
    display: none !important;
}

/* Responsive Grid adjustments */
@media (max-width: 640px) {
    .start-menu-grid {
        grid-template-columns: 1fr;
    }
    .content-box {
        padding: 24px;
    }
    h1 {
        font-size: 30px;
    }
}