/* =========================================================
   QUARTZ GBA - SYSTEM STYLES (style.css)
   ========================================================= */

/* --- Centralized Design Variables --- */
:root {
    /* Light Theme (Quartz Default) */
    --bg-color: #f0f2f5;
    --bg-gradient: linear-gradient(135deg, #fdfbfb 0%, #ebedee 100%);
    --glass-bg: rgba(255, 255, 255, 0.65);
    --glass-border: rgba(255, 255, 255, 0.9);
    --text-main: #111118;
    --text-muted: #717182;
    --accent: #8b9bb4;
    --play-btn: #b5e4ca;
    --shadow: 0 8px 32px rgba(130, 140, 170, 0.15);
    --danger: #d9534f;
    --primary: #111118;
    --primary-text: #f0f2f5;
}

body.dark-mode {
    /* Dark Theme Overrides */
    --bg-color: #0d0d12;
    --bg-gradient: linear-gradient(135deg, #121218 0%, #0a0a0f 100%);
    --glass-bg: rgba(20, 20, 25, 0.75);
    --glass-border: rgba(255, 255, 255, 0.08);
    --text-main: #fcfcfc;
    --text-muted: #888899;
    --accent: #7a7aff;
    --play-btn: #6fc28e;
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
    --primary: #fcfcfc;
    --primary-text: #0d0d12;
}

/* --- Global Resets & Typography --- */
body, html {
    margin: 0; 
    padding: 0; 
    width: 100%; 
    height: 100%;
    background-color: var(--bg-color); 
    background-image: var(--bg-gradient); 
    color: var(--text-main); 
    font-family: 'Segoe UI', system-ui, sans-serif;
    overflow: hidden; 
    touch-action: none; /* Prevents mobile pull-to-refresh */
    transition: background-color 0.4s, background-image 0.4s;
}

/* --- LAYER 1: Overlays & Globals --- */
#theme-fade-overlay {
    position: fixed; 
    top: 0; left: 0; width: 100vw; height: 100vh;
    background-color: #000; 
    z-index: 9999; 
    opacity: 0; 
    pointer-events: none;
    transition: opacity 0.4s ease-in-out;
}

#fps-counter {
    position: absolute;
    top: 15px; right: 15px;
    background: rgba(0, 0, 0, 0.6);
    color: #00ff00;
    padding: 4px 8px;
    border-radius: 4px;
    font-family: monospace;
    font-size: 14px;
    z-index: 1000;
    pointer-events: none;
}

/* --- LAYER 2: Main Navigation & Menu --- */
#menu-btn {
    position: absolute; 
    top: 20px; left: 25px; 
    background: var(--glass-bg); 
    border: 1px solid var(--glass-border);
    color: var(--text-main); 
    font-size: 24px; 
    cursor: pointer; 
    z-index: 100; 
    padding: 6px 12px; 
    border-radius: 8px; 
    backdrop-filter: blur(10px); 
    box-shadow: var(--shadow);
    transition: transform 0.2s, background 0.2s;
}

#menu-btn:hover {
    transform: scale(1.05);
}

#menu-panel {
    position: absolute; 
    top: 0; left: -340px; 
    width: 320px; height: 100%;
    background: var(--glass-bg); 
    backdrop-filter: blur(20px);
    display: flex; flex-direction: column; 
    padding: 90px 25px 25px; 
    box-sizing: border-box;
    transition: left 0.4s cubic-bezier(0.16, 1, 0.3, 1); 
    z-index: 50; 
    border-right: 1px solid var(--glass-border);
    overflow-y: auto;
}

#menu-panel.open { 
    left: 0; 
}

#menu-panel h2 {
    margin-top: 0; 
    font-size: 12px; 
    color: var(--text-muted); 
    letter-spacing: 2px;
    text-transform: uppercase;
}

.menu-item {
    background: rgba(150,150,150,0.1); 
    color: var(--text-main); 
    border: 1px solid var(--glass-border); 
    padding: 14px 18px; 
    margin-bottom: 12px; 
    font-size: 14px; 
    font-weight: 600; 
    cursor: pointer; 
    border-radius: 10px; 
    text-align: left; 
    transition: all 0.2s;
}

.menu-item:hover { 
    background: rgba(150,150,150,0.2); 
    transform: translateY(-2px); 
}

.toggle-row { 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
    cursor: default; 
}

.toggle-row:hover { 
    transform: none; 
}

select {
    background: var(--bg-color);
    color: var(--text-main);
    border: 1px solid var(--glass-border);
    border-radius: 4px;
    padding: 4px;
}

input[type=range] {
    width: 100px;
}

/* iOS Style Toggle Switch */
.switch { position: relative; display: inline-block; width: 44px; height: 24px; }
.switch input { opacity: 0; width: 0; height: 0; }
.slider { position: absolute; cursor: pointer; top: 0; left: 0; right: 0; bottom: 0; background-color: var(--text-muted); transition: .3s; border-radius: 24px; }
.slider:before { position: absolute; content: ""; height: 18px; width: 18px; left: 3px; bottom: 3px; background-color: white; transition: .3s; border-radius: 50%; }
input:checked + .slider { background-color: var(--play-btn); }
input:checked + .slider:before { transform: translateX(20px); }

/* Buttons */
.action-row { display: flex; gap: 10px; }
.primary-btn { background: var(--primary); color: var(--primary-text); border: none; padding: 10px; border-radius: 6px; cursor: pointer; flex: 1; font-weight: bold;}
.danger-btn { background: var(--danger); color: white; border: none; padding: 10px; border-radius: 6px; cursor: pointer; flex: 1; font-weight: bold;}
.primary-btn:hover, .danger-btn:hover { opacity: 0.8; }

/* --- LAYER 3: Modals --- */
.modal-overlay {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0, 0.4); 
    backdrop-filter: blur(8px);
    display: none; /* Hidden by default */
    justify-content: center; align-items: center; 
    z-index: 200;
}

.modal-overlay.active { 
    display: flex; 
}

.modal-content {
    background: var(--glass-bg); 
    padding: 30px; 
    border-radius: 16px; 
    width: 650px; 
    max-width: 95vw;
    border: 1px solid var(--glass-border); 
    box-shadow: var(--shadow); 
    backdrop-filter: blur(20px);
    max-height: 85vh; 
    overflow-y: auto;
}

.modal-content h3 {
    text-align: center;
    margin-top: 0;
}

textarea {
    background: rgba(0,0,0,0.1);
    color: var(--text-main);
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    padding: 10px;
    font-family: monospace;
}

/* --- LAYER 4: The Core Emulation Viewport --- */
#emulator-container {
    display: flex; 
    flex-direction: column; 
    justify-content: center; 
    align-items: center;
    width: 100vw; 
    height: 100vh; 
    position: relative;
}

/* The strict 3:2 wrapper logic */
#canvas-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

canvas {
    background-color: #000; 
    /* The magic to maintain 3:2 and fit inside the wrapper without stretching */
    aspect-ratio: 3 / 2;
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    
    /* Default Pixel Perfect Rendering */
    image-rendering: pixelated;
    
    box-shadow: 0 20px 60px rgba(0,0,0,0.15); 
    border-radius: 6px;
    z-index: 10; 
    border: 4px solid var(--glass-border); 
    transition: border 0.3s;
}

/* Video Filter Classes (Toggled by JS) */
canvas.filter-bilinear { image-rendering: auto; }
canvas.filter-lcd { image-rendering: pixelated; opacity: 0.9; /* Advanced shader logic goes in JS */ }

/* Play Overlay */
#play-overlay { 
    position: absolute; 
    display: none; /* Hidden until ROM loaded */
    flex-direction: column; 
    align-items: center; 
    justify-content: center;
    width: 100%; 
    height: 100%; 
    z-index: 20; 
    background: rgba(0,0,0,0.2); 
    backdrop-filter: blur(4px);
}

#play-overlay.active { 
    display: flex; 
}

.status-badge {
    font-weight: bold; 
    letter-spacing: 1px; 
    color: var(--text-main); 
    background: var(--glass-bg); 
    padding: 10px 20px; 
    border-radius: 8px; 
    backdrop-filter: blur(10px);
}

.play-btn {
    background: var(--play-btn); color: #111; font-weight: bold; font-size: 16px;
    border: none; padding: 12px 30px; border-radius: 8px; cursor: pointer;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2); transition: transform 0.2s; margin-top: 15px;
}
.play-btn:hover { transform: scale(1.05); }

/* --- Mobile Touch Interface --- */
#touch-controls {
    position: absolute; 
    bottom: 5%; 
    width: 100%; 
    max-width: 1000px;
    display: none; /* Hidden by default */
    justify-content: space-between; 
    padding: 0 20px; 
    box-sizing: border-box; 
    z-index: 30;
}

#touch-controls.active { 
    display: flex; 
}

.touch-left-cluster, .touch-right-cluster {
    display: flex;
    flex-direction: column;
    gap: 20px;
    opacity: 0.6;
}

.touch-center-cluster {
    display: flex;
    gap: 15px;
    align-items: flex-end;
    padding-bottom: 20px;
    opacity: 0.6;
}

.dpad { 
    display: grid; 
    gap: 8px; 
    grid-template-columns: 55px 55px 55px; 
    grid-template-rows: 55px 55px 55px; 
}

.action-btns { 
    display: grid; 
    gap: 8px; 
    grid-template-columns: 65px 65px; 
    align-items: end; 
    padding-bottom: 25px;
}

.t-btn { 
    background: var(--glass-bg); 
    border: 1px solid var(--glass-border); 
    backdrop-filter: blur(5px); 
    box-shadow: 0 4px 10px rgba(0,0,0,0.1); 
    color: var(--text-main); 
    font-weight: bold; 
    display: flex; 
    justify-content: center; 
    align-items: center; 
    user-select: none;
    cursor: pointer;
}

.t-btn:active { 
    background: #fff; 
    color: #000;
    transform: scale(0.95); 
}

/* Specific Touch Button Shapes */
.dpad .t-btn { width: 100%; height: 100%; border-radius: 12px; }
.up { grid-column: 2; grid-row: 1; } 
.left { grid-column: 1; grid-row: 2; }
.right { grid-column: 3; grid-row: 2; } 
.down { grid-column: 2; grid-row: 3; }

.action-btns .t-btn { width: 100%; height: 65px; border-radius: 50%; }
.b-btn { grid-column: 1; grid-row: 2; margin-bottom: -20px; }
.a-btn { grid-column: 2; grid-row: 1; }

.bumper { width: 120px; height: 40px; border-radius: 20px; }
.pill { width: 60px; height: 25px; border-radius: 12px; font-size: 10px; }
#screen {
    width: 100vw;
    height: 100vh;
    background-color: #000; /* Deep black for those bars */
    object-fit: contain;    /* The "No-Stretch" magic */
    display: none;          /* Keeps it hidden until the game starts */
    image-rendering: pixelated; /* Keeps the GBA pixels crisp */
}
/* --- Engine Loader Overlay --- */
#engine-loader {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(8px);
    z-index: 200;
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
    font-family: 'Courier New', monospace;
}

.engine-loader-content { text-align: center; width: 80%; }

.mini-bar-bg {
    width: 100%;
    height: 4px;
    background: rgba(255,255,255,0.1);
    border-radius: 2px;
    margin-top: 15px;
    overflow: hidden;
}

#mini-bar-fill {
    width: 0%;
    height: 100%;
    background: var(--play-btn); /* Using your existing green color */
    transition: width 0.3s ease;
}

/* A simple spinning animation for the "thinking" phase */
.loader-spinner {
    width: 30px; height: 30px;
    border: 3px solid rgba(255,255,255,0.1);
    border-top: 3px solid var(--play-btn);
    border-radius: 50%;
    margin: 0 auto 15px;
    animation: spin 1s linear infinite;
}

@keyframes spin { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }