/* Christmas Magic Theme - Red/Green Color System */

:root {
    /* Primary Colors - 節慶紅色系統 */
    --primary-50: #fef2f2;
    --primary-100: #fee2e2;
    --primary-200: #fecaca;
    --primary-300: #fca5a5;
    --primary-400: #f87171;
    --primary-500: #dc2626;
    --primary-600: #b91c1c;
    --primary-700: #991b1b;
    --primary-800: #7f1d1d;
    --primary-900: #450a0a;
    
    /* Secondary Colors - 聖誕綠色系統 */
    --secondary-50: #f0fdf4;
    --secondary-100: #dcfce7;
    --secondary-200: #bbf7d0;
    --secondary-300: #86efac;
    --secondary-400: #4ade80;
    --secondary-500: #15b981;
    --secondary-600: #059669;
    --secondary-700: #047857;
    --secondary-800: #065f46;
    --secondary-900: #064e3b;
    
    /* Accent Colors - 金色裝飾 */
    --accent-50: #fffbeb;
    --accent-100: #fef3c7;
    --accent-200: #fde68a;
    --accent-300: #fcd34d;
    --accent-400: #fbbf24;
    --accent-500: #f59e0b;
    --accent-600: #d97706;
    --accent-700: #b45309;
    --accent-800: #92400e;
    --accent-900: #78350f;
    
    /* Semantic Colors */
    --success-50: #f0fdf4;
    --success-500: #15b981;
    --success-600: #059669;
    --error-50: #fef2f2;
    --error-500: #dc2626;
    --error-600: #b91c1c;
    --warning-50: #fffbeb;
    --warning-500: #f59e0b;
    --warning-600: #d97706;
    
    /* Theme-specific Background Colors */
    --bg-primary: #fefefe;
    --bg-secondary: #fef7f7;
    --bg-tertiary: #fef2f2;
    --text-primary: var(--neutral-900);
    --text-secondary: var(--neutral-700);
    --text-tertiary: var(--neutral-600);
    --border-primary: #fecaca;
    --border-secondary: #fee2e2;
}

/* Christmas-specific Body Background */
body {
    background: linear-gradient(135deg, #fefefe 0%, #fef7f7 50%, #fef2f2 100%);
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(220, 38, 38, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(21, 185, 129, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(245, 158, 11, 0.02) 0%, transparent 50%);
}

/* Christmas-specific Header Background */
.header {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, rgba(255, 255, 255, 0.95) 100%);
    border-bottom: 1px solid rgba(220, 38, 38, 0.12);
    box-shadow: 0 1px 3px rgba(220, 38, 38, 0.05);
}

/* Mobile Header with Christmas theme backdrop */
@media (max-width: 767px) {
    .header {
        background: var(--bg-secondary);
        background: rgba(254, 247, 247, 0.95);
        backdrop-filter: blur(8px);
        box-shadow: 0 1px 3px rgba(220, 38, 38, 0.05);
        border-bottom: 1px solid rgba(220, 38, 38, 0.12);
    }
}

/* Christmas-specific Canvas Container Background */
.canvas-container {
    background: radial-gradient(ellipse at center, rgba(220, 38, 38, 0.03) 0%, var(--bg-primary) 70%);
}

/* Christmas-specific Canvas Card Styling */
.canvas-card {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 
        var(--shadow-2xl),
        0 0 40px rgba(220, 38, 38, 0.08),
        0 0 20px rgba(21, 185, 129, 0.05);
    border: 1px solid rgba(220, 38, 38, 0.15);
}

.canvas-card:hover {
    box-shadow: 
        0 32px 64px -12px rgba(0, 0, 0, 0.1),
        0 25px 50px -12px rgba(220, 38, 38, 0.12),
        0 0 30px rgba(21, 185, 129, 0.08);
    border-color: rgba(220, 38, 38, 0.25);
}

/* Christmas-specific Toolbar Styling */
.toolbar {
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid rgba(220, 38, 38, 0.15);
    box-shadow: 
        var(--shadow-2xl),
        0 0 30px rgba(220, 38, 38, 0.08),
        0 0 15px rgba(21, 185, 129, 0.05);
}

.toolbar:hover {
    box-shadow: 
        var(--shadow-2xl),
        0 0 0 1px rgba(220, 38, 38, 0.2),
        0 0 20px rgba(21, 185, 129, 0.08);
}

/* Christmas-specific Button Hover Effects */
.format-btn:hover,
.toolbar-btn:hover {
    border-color: var(--primary-400);
    color: var(--primary-600);
    background: linear-gradient(135deg, rgba(220, 38, 38, 0.05) 0%, rgba(21, 185, 129, 0.03) 100%);
}

.position-btn:hover {
    border-color: var(--primary-400);
    color: var(--primary-500);
    background: rgba(220, 38, 38, 0.05);
}

/* Christmas-specific Primary Button */
.toolbar-btn.primary {
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 100%);
    border-color: var(--primary-600);
}

.toolbar-btn.primary:hover {
    background: linear-gradient(135deg, var(--primary-400) 0%, var(--primary-500) 100%);
    border-color: var(--primary-500);
}

/* Christmas-specific Active States */
.format-btn.active {
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--secondary-500) 100%);
    border-color: var(--primary-600);
    color: white;
    box-shadow: 
        var(--shadow-lg),
        0 0 20px rgba(220, 38, 38, 0.3),
        0 0 10px rgba(21, 185, 129, 0.2);
}

.format-btn.active:hover {
    background: linear-gradient(135deg, var(--primary-400) 0%, var(--secondary-400) 100%);
    border-color: var(--primary-500);
    box-shadow: 
        var(--shadow-xl),
        0 0 25px rgba(220, 38, 38, 0.4),
        0 0 15px rgba(21, 185, 129, 0.3);
}

/* Christmas-specific Canvas Interactions */
#mainCanvas:not(.has-image):hover {
    border-color: var(--primary-400);
    box-shadow: 
        var(--shadow-lg),
        0 0 0 1px var(--primary-100),
        0 0 20px var(--primary-200),
        0 0 10px var(--secondary-200);
}

#mainCanvas.has-image {
    border-color: var(--primary-400);
    box-shadow: 
        var(--shadow-lg),
        0 0 0 1px var(--primary-100),
        0 0 20px var(--primary-200),
        0 0 10px var(--secondary-200);
}

#mainCanvas.has-image:hover {
    border-color: var(--primary-500);
    box-shadow: 
        var(--shadow-xl),
        0 0 0 1px var(--primary-200),
        0 0 30px var(--primary-300),
        0 0 15px var(--secondary-300);
}

/* Christmas-specific Precision Mode */
#mainCanvas.precision-mode {
    border-color: var(--accent-500);
    box-shadow: 
        var(--shadow-xl),
        0 0 0 2px rgba(245, 158, 11, 0.3),
        0 0 30px rgba(245, 158, 11, 0.2),
        0 0 15px rgba(220, 38, 38, 0.1);
}

/* Christmas-specific Placeholder Text */
.placeholder-text {
    background: linear-gradient(135deg, var(--primary-600) 0%, var(--secondary-600) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: christmasGlow 3s ease-in-out infinite;
}

.placeholder-icon {
    color: var(--primary-500);
    filter: drop-shadow(0 0 8px rgba(220, 38, 38, 0.3));
    animation: christmasGlow 3s ease-in-out infinite;
}

/* Christmas-specific Gesture Hints */
.gesture-hint {
    background: rgba(255, 255, 255, 0.98);
    border: 2px solid var(--primary-400);
    color: var(--primary-600);
    box-shadow: 
        var(--shadow-lg),
        0 0 20px rgba(220, 38, 38, 0.2),
        0 0 10px rgba(21, 185, 129, 0.1);
}

/* Desktop App Container Styling */
@media (min-width: 768px) {
    .app-container {
        box-shadow: 
            0 8px 32px rgba(220, 38, 38, 0.15),
            0 4px 16px rgba(21, 185, 129, 0.08);
        background: var(--bg-primary);
    }
    
    /* Christmas-specific Desktop Toolbar */
    .toolbar {
        background: linear-gradient(135deg, var(--bg-secondary) 0%, rgba(255, 255, 255, 0.98) 100%);
        border-top: 1px solid rgba(220, 38, 38, 0.12);
        box-shadow: 
            0 -1px 3px rgba(220, 38, 38, 0.05),
            0 0 15px rgba(21, 185, 129, 0.03);
    }
}

/* Christmas Animation Keyframes */
@keyframes christmasGlow {
    0%, 100% {
        filter: drop-shadow(0 0 8px rgba(220, 38, 38, 0.3));
    }
    33% {
        filter: drop-shadow(0 0 12px rgba(21, 185, 129, 0.4));
    }
    66% {
        filter: drop-shadow(0 0 10px rgba(245, 158, 11, 0.3));
    }
}

/* Christmas Loading Animation */
.loading-spinner .icon {
    color: var(--primary-500);
    filter: drop-shadow(0 0 8px rgba(220, 38, 38, 0.3));
}

/* Christmas Status Messages */
.status-message.success {
    background: linear-gradient(135deg, var(--success-50) 0%, var(--secondary-50) 100%);
    color: var(--success-600);
    border: 1px solid var(--success-300);
}

.status-message.error {
    background: linear-gradient(135deg, var(--error-50) 0%, var(--primary-50) 100%);
    color: var(--error-600);
    border: 1px solid var(--error-300);
}