/* ===================================
   ENHANCED THEME SYSTEM WITH DYNAMIC BACKGROUNDS
   =================================== */

/* Theme Selector */
.theme-selector-wrapper {
    position: relative;
}

.theme-selector {
    width: 100%;
    background: white;
    border: 2px solid var(--border);
    border-radius: 12px;
    padding: 12px 16px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text);
    cursor: pointer;
    transition: all 0.2s ease;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 12px center;
    background-repeat: no-repeat;
    background-size: 16px;
    padding-right: 40px;
}

.theme-selector:hover {
    border-color: var(--primary);
}

.theme-selector:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

/* Theme Preview */
.theme-preview {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 8px;
    padding: 8px 12px;
    background: var(--surface);
    border-radius: 8px;
    font-size: 0.813rem;
    color: var(--text-secondary);
    opacity: 0;
    transform: translateY(-5px);
    transition: all 0.3s ease;
}

.theme-preview.show {
    opacity: 1;
    transform: translateY(0);
}

.theme-color-dots {
    display: flex;
    gap: 4px;
}

.theme-color-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.8);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.theme-description {
    flex: 1;
    font-weight: 500;
}

/* Enhanced Background Pattern System */
.bg-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.06;
    pointer-events: none;
    transition: all 0.6s ease;
    border-radius: 24px;
    overflow: hidden;
}

/* Default Theme Background */
.bg-pattern {
    background-image: 
        radial-gradient(circle at 20% 80%, var(--primary) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, var(--accent) 0%, transparent 50%);
}

/* Spring Theme Backgrounds */
.theme-spring-blossom .bg-pattern {
    background-image: 
        radial-gradient(circle at 15% 85%, #FFB6C1 0%, transparent 40%),
        radial-gradient(circle at 85% 15%, #98FB98 0%, transparent 40%),
        radial-gradient(circle at 50% 50%, #FFC0CB 0%, transparent 60%),
        linear-gradient(45deg, transparent 45%, rgba(255, 182, 193, 0.1) 50%, transparent 55%);
}

.theme-spring-garden .bg-pattern {
    background-image: 
        radial-gradient(circle at 25% 75%, #90EE90 0%, transparent 45%),
        radial-gradient(circle at 75% 25%, #FFE4B5 0%, transparent 45%),
        radial-gradient(circle at 60% 80%, #98FB98 0%, transparent 35%),
        linear-gradient(120deg, transparent 48%, rgba(144, 238, 144, 0.15) 50%, transparent 52%);
}

.theme-spring-sky .bg-pattern {
    background-image: 
        radial-gradient(ellipse at 30% 70%, #87CEEB 0%, transparent 50%),
        radial-gradient(ellipse at 70% 30%, #FFFFE0 0%, transparent 50%),
        linear-gradient(60deg, transparent 47%, rgba(135, 206, 235, 0.12) 50%, transparent 53%),
        radial-gradient(circle at 90% 10%, #B0E0E6 0%, transparent 25%);
}

/* Summer Theme Backgrounds */
.theme-summer-ocean .bg-pattern {
    background-image: 
        radial-gradient(ellipse at 20% 80%, #40E0D0 0%, transparent 45%),
        radial-gradient(ellipse at 80% 20%, #FFF8DC 0%, transparent 45%),
        linear-gradient(30deg, transparent 46%, rgba(64, 224, 208, 0.15) 50%, transparent 54%),
        radial-gradient(circle at 45% 60%, #AFEEEE 0%, transparent 30%);
}

.theme-summer-sunset .bg-pattern {
    background-image: 
        radial-gradient(circle at 25% 75%, #FFA07A 0%, transparent 50%),
        radial-gradient(circle at 75% 25%, #F0E68C 0%, transparent 50%),
        linear-gradient(135deg, transparent 45%, rgba(255, 160, 122, 0.15) 50%, transparent 55%),
        radial-gradient(ellipse at 90% 90%, #FFB07A 0%, transparent 25%);
}

.theme-summer-tropical .bg-pattern {
    background-image: 
        radial-gradient(circle at 30% 70%, #20B2AA 0%, transparent 45%),
        radial-gradient(circle at 70% 30%, #FFEFD5 0%, transparent 45%),
        radial-gradient(circle at 85% 15%, #48D1CC 0%, transparent 35%),
        linear-gradient(90deg, transparent 48%, rgba(32, 178, 170, 0.12) 50%, transparent 52%);
}

/* Autumn Theme Backgrounds */
.theme-autumn-leaves .bg-pattern {
    background-image: 
        radial-gradient(circle at 20% 80%, #DEB887 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, #F4A460 0%, transparent 50%),
        linear-gradient(45deg, transparent 47%, rgba(222, 184, 135, 0.15) 50%, transparent 53%),
        radial-gradient(ellipse at 10% 90%, #D2B48C 0%, transparent 30%);
}

.theme-autumn-harvest .bg-pattern {
    background-image: 
        radial-gradient(ellipse at 25% 75%, #CD853F 0%, transparent 45%),
        radial-gradient(ellipse at 75% 25%, #FFE4B5 0%, transparent 45%),
        radial-gradient(circle at 50% 85%, #DEB887 0%, transparent 35%),
        linear-gradient(150deg, transparent 46%, rgba(205, 133, 63, 0.12) 50%, transparent 54%);
}

.theme-autumn-golden .bg-pattern {
    background-image: 
        radial-gradient(circle at 30% 70%, #DAA520 0%, transparent 50%),
        radial-gradient(circle at 70% 30%, #F5DEB3 0%, transparent 50%),
        linear-gradient(75deg, transparent 48%, rgba(218, 165, 32, 0.15) 50%, transparent 52%),
        radial-gradient(ellipse at 85% 85%, #FFD700 0%, transparent 25%);
}

/* Winter Theme Backgrounds */
.theme-winter-snow .bg-pattern {
    background-image: 
        radial-gradient(circle at 20% 80%, #B0E0E6 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, #E6E6FA 0%, transparent 50%),
        radial-gradient(circle at 60% 40%, #F0F8FF 0%, transparent 40%),
        linear-gradient(0deg, transparent 49%, rgba(176, 224, 230, 0.1) 50%, transparent 51%);
}

.theme-winter-frost .bg-pattern {
    background-image: 
        radial-gradient(ellipse at 25% 75%, #AFEEEE 0%, transparent 45%),
        radial-gradient(ellipse at 75% 25%, #F5F5DC 0%, transparent 45%),
        radial-gradient(circle at 45% 55%, #E0FFFF 0%, transparent 35%),
        linear-gradient(30deg, transparent 48.5%, rgba(175, 238, 238, 0.12) 50%, transparent 51.5%);
}

.theme-winter-crystal .bg-pattern {
    background-image: 
        radial-gradient(circle at 30% 70%, #ADD8E6 0%, transparent 50%),
        radial-gradient(circle at 70% 30%, #E6E6FA 0%, transparent 50%),
        linear-gradient(120deg, transparent 47%, rgba(173, 216, 230, 0.15) 50%, transparent 53%),
        radial-gradient(ellipse at 90% 10%, #B0C4DE 0%, transparent 30%);
}

/* Special Theme Backgrounds */
.theme-rainbow-pastel .bg-pattern {
    background-image: 
        radial-gradient(circle at 20% 80%, #FFB3BA 0%, transparent 40%),
        radial-gradient(circle at 80% 20%, #FFDFBA 0%, transparent 40%),
        radial-gradient(circle at 60% 60%, #FFFFBA 0%, transparent 40%),
        radial-gradient(circle at 40% 40%, #BAFFC9 0%, transparent 40%),
        radial-gradient(circle at 80% 80%, #BAE1FF 0%, transparent 40%);
    animation: rainbow-float 8s ease-in-out infinite alternate;
}

.theme-lavender-dreams .bg-pattern {
    background-image: 
        radial-gradient(ellipse at 25% 75%, #E6E6FA 0%, transparent 50%),
        radial-gradient(ellipse at 75% 25%, #DDA0DD 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, #F8F8FF 0%, transparent 60%),
        linear-gradient(45deg, transparent 48%, rgba(230, 230, 250, 0.15) 50%, transparent 52%);
}

.theme-mint-fresh .bg-pattern {
    background-image: 
        radial-gradient(circle at 30% 70%, #98FB98 0%, transparent 45%),
        radial-gradient(circle at 70% 30%, #AFEEEE 0%, transparent 45%),
        radial-gradient(ellipse at 85% 15%, #F0FFF0 0%, transparent 35%),
        linear-gradient(60deg, transparent 47%, rgba(152, 251, 152, 0.12) 50%, transparent 53%);
}

.theme-peach-cream .bg-pattern {
    background-image: 
        radial-gradient(circle at 25% 75%, #FFEAA7 0%, transparent 50%),
        radial-gradient(circle at 75% 25%, #FFE4E1 0%, transparent 50%),
        radial-gradient(ellipse at 60% 80%, #FFF5EE 0%, transparent 40%),
        linear-gradient(135deg, transparent 46%, rgba(255, 234, 167, 0.15) 50%, transparent 54%);
}

.theme-berry-blush .bg-pattern {
    background-image:
        radial-gradient(circle at 20% 80%, #FFB6C1 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, #F0E68C 0%, transparent 50%),
        radial-gradient(ellipse at 50% 30%, #FFF0F5 0%, transparent 45%),
        linear-gradient(90deg, transparent 47.5%, rgba(255, 182, 193, 0.15) 50%, transparent 52.5%);
}

/* Korean Holiday Theme Backgrounds */
.theme-samiljeol .bg-pattern {
    background-image:
        radial-gradient(circle at 20% 80%, #CD2E3A 0%, transparent 45%),
        radial-gradient(circle at 80% 20%, #003478 0%, transparent 45%),
        radial-gradient(circle at 50% 50%, #CD2E3A 0%, transparent 30%),
        linear-gradient(45deg, transparent 47%, rgba(205, 46, 58, 0.12) 50%, transparent 53%);
}

.theme-gwangbokjeol .bg-pattern {
    background-image:
        radial-gradient(circle at 25% 75%, #003478 0%, transparent 45%),
        radial-gradient(circle at 75% 25%, #CD2E3A 0%, transparent 45%),
        radial-gradient(ellipse at 50% 10%, rgba(255,255,255,0.8) 0%, transparent 30%),
        linear-gradient(135deg, transparent 47%, rgba(0, 52, 120, 0.12) 50%, transparent 53%);
}

.theme-hangulnal .bg-pattern {
    background-image:
        radial-gradient(circle at 20% 80%, #1B4B8A 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, #C8A040 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, #FFF9EC 0%, transparent 40%),
        linear-gradient(45deg, transparent 48%, rgba(27, 75, 138, 0.1) 50%, transparent 52%);
}

/* Korean Holiday Theme Backgrounds — 추석/어린이날/어버이날/스승의날 */
.theme-chuseok .bg-pattern {
    background-image:
        radial-gradient(circle at 50% 20%, #C8860A 0%, transparent 40%),
        radial-gradient(circle at 20% 80%, #795548 0%, transparent 45%),
        radial-gradient(circle at 80% 75%, #C8860A 0%, transparent 35%),
        linear-gradient(135deg, transparent 47%, rgba(200, 134, 10, 0.1) 50%, transparent 53%);
}

.theme-childrenday .bg-pattern {
    background-image:
        radial-gradient(circle at 20% 80%, #FF5722 0%, transparent 40%),
        radial-gradient(circle at 80% 20%, #4CAF50 0%, transparent 40%),
        radial-gradient(circle at 50% 50%, #FF5722 0%, transparent 25%),
        radial-gradient(circle at 75% 75%, #4CAF50 0%, transparent 30%),
        linear-gradient(45deg, transparent 47%, rgba(255, 87, 34, 0.1) 50%, transparent 53%);
}

.theme-parentsday .bg-pattern {
    background-image:
        radial-gradient(circle at 30% 70%, #E91E63 0%, transparent 45%),
        radial-gradient(circle at 70% 30%, #FF8F00 0%, transparent 45%),
        radial-gradient(circle at 50% 50%, #E91E63 0%, transparent 25%),
        linear-gradient(135deg, transparent 47%, rgba(233, 30, 99, 0.1) 50%, transparent 53%);
}

.theme-teachersday .bg-pattern {
    background-image:
        radial-gradient(circle at 25% 75%, #B71C1C 0%, transparent 45%),
        radial-gradient(circle at 75% 25%, #1565C0 0%, transparent 45%),
        radial-gradient(ellipse at 50% 10%, #FFF9C4 0%, transparent 30%),
        linear-gradient(45deg, transparent 47%, rgba(183, 28, 28, 0.1) 50%, transparent 53%);
}

/* Holiday Theme Backgrounds */
.theme-halloween .bg-pattern {
    background-image:
        radial-gradient(circle at 25% 75%, #F97316 0%, transparent 45%),
        radial-gradient(circle at 75% 25%, #7C3AED 0%, transparent 45%),
        radial-gradient(circle at 50% 55%, #F97316 0%, transparent 25%),
        radial-gradient(ellipse at 10% 20%, #7C3AED 0%, transparent 30%),
        linear-gradient(135deg, transparent 46%, rgba(249, 115, 22, 0.12) 50%, transparent 54%);
}

.theme-christmas .bg-pattern {
    background-image:
        radial-gradient(circle at 20% 80%, #C41E3A 0%, transparent 45%),
        radial-gradient(circle at 80% 20%, #166534 0%, transparent 45%),
        radial-gradient(circle at 50% 30%, #C41E3A 0%, transparent 25%),
        radial-gradient(ellipse at 85% 85%, #166534 0%, transparent 35%),
        linear-gradient(45deg, transparent 48%, rgba(196, 30, 58, 0.1) 50%, transparent 52%);
}

/* Theme Animation */
body {
    transition: all 0.4s ease;
}

.container {
    transition: all 0.4s ease;
}

.pattern-card {
    transition: all 0.4s ease;
}

/* Rainbow Animation for Rainbow Pastel Theme */
@keyframes rainbow-float {
    0% {
        transform: translateY(0) rotate(0deg);
        opacity: 0.06;
    }
    25% {
        transform: translateY(-5px) rotate(1deg);
        opacity: 0.08;
    }
    50% {
        transform: translateY(-10px) rotate(0deg);
        opacity: 0.06;
    }
    75% {
        transform: translateY(-5px) rotate(-1deg);
        opacity: 0.08;
    }
    100% {
        transform: translateY(0) rotate(0deg);
        opacity: 0.06;
    }
}

/* Random Theme Button */
.btn-theme-random {
    background: linear-gradient(135deg, #FFB3BA 0%, #FFDFBA 25%, #FFFFBA 50%, #BAFFC9 75%, #BAE1FF 100%);
    color: white;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
    border: none;
    animation: rainbow-glow 3s ease-in-out infinite alternate;
}

@keyframes rainbow-glow {
    0% {
        box-shadow: 0 0 5px rgba(255, 179, 186, 0.5), 0 0 10px rgba(255, 179, 186, 0.3);
    }
    25% {
        box-shadow: 0 0 5px rgba(255, 223, 186, 0.5), 0 0 10px rgba(255, 223, 186, 0.3);
    }
    50% {
        box-shadow: 0 0 5px rgba(255, 255, 186, 0.5), 0 0 10px rgba(255, 255, 186, 0.3);
    }
    75% {
        box-shadow: 0 0 5px rgba(186, 255, 201, 0.5), 0 0 10px rgba(186, 255, 201, 0.3);
    }
    100% {
        box-shadow: 0 0 5px rgba(186, 225, 255, 0.5), 0 0 10px rgba(186, 225, 255, 0.3);
    }
}

.btn-theme-random:hover {
    transform: translateY(-2px);
    animation: rainbow-glow 1.5s ease-in-out infinite alternate;
}

/* Theme Variables */
:root {
    /* Default */
    --body-bg: #F1F5F9;
    --container-bg: white;
    
    /* Spring Themes */
    --spring-blossom-primary: #FFB6C1;
    --spring-blossom-secondary: #FFE4E6;
    --spring-blossom-accent: #98FB98;
    --spring-blossom-body-bg: #FDF2F8;
    --spring-blossom-container-bg: #FEFCFF;
    --spring-blossom-text: #2d1b69;
    --spring-blossom-text-secondary: #4c1d95;
    
    --spring-garden-primary: #90EE90;
    --spring-garden-secondary: #F0FFF0;
    --spring-garden-accent: #FFE4B5;
    --spring-garden-body-bg: #F0FDF4;
    --spring-garden-container-bg: #FDFFFE;
    --spring-garden-text: #1f2937;
    --spring-garden-text-secondary: #374151;
    
    --spring-sky-primary: #87CEEB;
    --spring-sky-secondary: #F0F8FF;
    --spring-sky-accent: #FFFFE0;
    --spring-sky-body-bg: #F0F9FF;
    --spring-sky-container-bg: #FEFEFF;
    --spring-sky-text: #1e3a8a;
    --spring-sky-text-secondary: #3730a3;
    
    /* Summer Themes */
    --summer-ocean-primary: #40E0D0;
    --summer-ocean-secondary: #E0FFFF;
    --summer-ocean-accent: #FFF8DC;
    --summer-ocean-body-bg: #ECFEFF;
    --summer-ocean-container-bg: #F8FFFF;
    --summer-ocean-text: #0f766e;
    --summer-ocean-text-secondary: #134e4a;
    
    --summer-sunset-primary: #FFA07A;
    --summer-sunset-secondary: #FFF5EE;
    --summer-sunset-accent: #F0E68C;
    --summer-sunset-body-bg: #FFF7ED;
    --summer-sunset-container-bg: #FFFEFB;
    --summer-sunset-text: #9a3412;
    --summer-sunset-text-secondary: #c2410c;
    
    --summer-tropical-primary: #20B2AA;
    --summer-tropical-secondary: #F0FFFF;
    --summer-tropical-accent: #FFEFD5;
    --summer-tropical-body-bg: #F0FDFA;
    --summer-tropical-container-bg: #FAFFFF;
    --summer-tropical-text: #0f766e;
    --summer-tropical-text-secondary: #115e59;
    
    /* Autumn Themes */
    --autumn-leaves-primary: #DEB887;
    --autumn-leaves-secondary: #FDF5E6;
    --autumn-leaves-accent: #F4A460;
    --autumn-leaves-body-bg: #FFFBEB;
    --autumn-leaves-container-bg: #FFFEF8;
    --autumn-leaves-text: #92400e;
    --autumn-leaves-text-secondary: #a16207;
    
    --autumn-harvest-primary: #CD853F;
    --autumn-harvest-secondary: #FFF8DC;
    --autumn-harvest-accent: #FFE4B5;
    --autumn-harvest-body-bg: #FEF3C7;
    --autumn-harvest-container-bg: #FFFCF0;
    --autumn-harvest-text: #92400e;
    --autumn-harvest-text-secondary: #a16207;
    
    --autumn-golden-primary: #DAA520;
    --autumn-golden-secondary: #FFFAF0;
    --autumn-golden-accent: #F5DEB3;
    --autumn-golden-body-bg: #FFFBEB;
    --autumn-golden-container-bg: #FFFEF5;
    --autumn-golden-text: #a16207;
    --autumn-golden-text-secondary: #d97706;
    
    /* Winter Themes */
    --winter-snow-primary: #B0E0E6;
    --winter-snow-secondary: #F8F8FF;
    --winter-snow-accent: #E6E6FA;
    --winter-snow-body-bg: #F8FAFC;
    --winter-snow-container-bg: #FDFDFF;
    --winter-snow-text: #1e3a8a;
    --winter-snow-text-secondary: #3730a3;
    
    --winter-frost-primary: #AFEEEE;
    --winter-frost-secondary: #F0FFFF;
    --winter-frost-accent: #F5F5DC;
    --winter-frost-body-bg: #ECFEFF;
    --winter-frost-container-bg: #F8FFFF;
    --winter-frost-text: #0f766e;
    --winter-frost-text-secondary: #115e59;
    
    --winter-crystal-primary: #ADD8E6;
    --winter-crystal-secondary: #F0F8FF;
    --winter-crystal-accent: #E6E6FA;
    --winter-crystal-body-bg: #F0F9FF;
    --winter-crystal-container-bg: #FAFEFF;
    --winter-crystal-text: #1e40af;
    --winter-crystal-text-secondary: #3730a3;
    
    /* Special Themes */
    --rainbow-pastel-primary: #FFB3BA;
    --rainbow-pastel-secondary: #FFDFBA;
    --rainbow-pastel-accent: #FFFFBA;
    --rainbow-pastel-body-bg: #FEF7FF;
    --rainbow-pastel-container-bg: #FFFEFF;
    --rainbow-pastel-text: #7c2d12;
    --rainbow-pastel-text-secondary: #9a3412;
    
    --lavender-dreams-primary: #E6E6FA;
    --lavender-dreams-secondary: #F8F8FF;
    --lavender-dreams-accent: #DDA0DD;
    --lavender-dreams-body-bg: #FAF5FF;
    --lavender-dreams-container-bg: #FEFAFF;
    --lavender-dreams-text: #581c87;
    --lavender-dreams-text-secondary: #6b21a8;
    
    --mint-fresh-primary: #98FB98;
    --mint-fresh-secondary: #F0FFF0;
    --mint-fresh-accent: #AFEEEE;
    --mint-fresh-body-bg: #ECFDF5;
    --mint-fresh-container-bg: #F8FFFC;
    --mint-fresh-text: #14532d;
    --mint-fresh-text-secondary: #166534;
    
    --peach-cream-primary: #FFEAA7;
    --peach-cream-secondary: #FFF5EE;
    --peach-cream-accent: #FFE4E1;
    --peach-cream-body-bg: #FFFBEB;
    --peach-cream-container-bg: #FFFEF6;
    --peach-cream-text: #a16207;
    --peach-cream-text-secondary: #d97706;
    
    --berry-blush-primary: #FFB6C1;
    --berry-blush-secondary: #FFF0F5;
    --berry-blush-accent: #F0E68C;
    --berry-blush-body-bg: #FDF2F8;
    --berry-blush-container-bg: #FEFAFC;
    --berry-blush-text: #be185d;
    --berry-blush-text-secondary: #db2777;

    /* Korean Holiday Themes */
    --samiljeol-primary: #CD2E3A;
    --samiljeol-secondary: #FFF0F0;
    --samiljeol-accent: #003478;
    --samiljeol-body-bg: #FFF0F2;
    --samiljeol-container-bg: #FFFEFE;
    --samiljeol-text: #7F0000;
    --samiljeol-text-secondary: #003478;

    --gwangbokjeol-primary: #003478;
    --gwangbokjeol-secondary: #EEF3FF;
    --gwangbokjeol-accent: #CD2E3A;
    --gwangbokjeol-body-bg: #EEF2FF;
    --gwangbokjeol-container-bg: #FAFAFF;
    --gwangbokjeol-text: #1A237E;
    --gwangbokjeol-text-secondary: #3949AB;

    --hangulnal-primary: #1B4B8A;
    --hangulnal-secondary: #FFF9EC;
    --hangulnal-accent: #C8A040;
    --hangulnal-body-bg: #FFFBF0;
    --hangulnal-container-bg: #FFFEF8;
    --hangulnal-text: #1A237E;
    --hangulnal-text-secondary: #37474F;

    --chuseok-primary: #C8860A;
    --chuseok-secondary: #FFF8E7;
    --chuseok-accent: #795548;
    --chuseok-body-bg: #FFFBF0;
    --chuseok-container-bg: #FFFEF8;
    --chuseok-text: #4E342E;
    --chuseok-text-secondary: #6D4C41;

    --childrenday-primary: #FF5722;
    --childrenday-secondary: #FFF9F0;
    --childrenday-accent: #4CAF50;
    --childrenday-body-bg: #FFF9F0;
    --childrenday-container-bg: #FFFEF8;
    --childrenday-text: #BF360C;
    --childrenday-text-secondary: #D84315;

    --parentsday-primary: #E91E63;
    --parentsday-secondary: #FCE4EC;
    --parentsday-accent: #FF8F00;
    --parentsday-body-bg: #FFF0F5;
    --parentsday-container-bg: #FFFAFE;
    --parentsday-text: #880E4F;
    --parentsday-text-secondary: #AD1457;

    --teachersday-primary: #B71C1C;
    --teachersday-secondary: #FFF9C4;
    --teachersday-accent: #1565C0;
    --teachersday-body-bg: #FFFDE7;
    --teachersday-container-bg: #FFFEF8;
    --teachersday-text: #1A237E;
    --teachersday-text-secondary: #283593;

    /* Holiday Themes */
    --halloween-primary: #F97316;
    --halloween-secondary: #FFF3E0;
    --halloween-accent: #7C3AED;
    --halloween-body-bg: #FFF3E0;
    --halloween-container-bg: #FFFCF8;
    --halloween-text: #7C2D12;
    --halloween-text-secondary: #9A3412;

    --christmas-primary: #C41E3A;
    --christmas-secondary: #F0FFF4;
    --christmas-accent: #166534;
    --christmas-body-bg: #F0FFF4;
    --christmas-container-bg: #FAFFFC;
    --christmas-text: #14532D;
    --christmas-text-secondary: #15803D;
}

/* Theme Application Classes with Text Colors */
.theme-spring-blossom {
    --primary: var(--spring-blossom-primary);
    --surface: var(--spring-blossom-secondary);
    --accent: var(--spring-blossom-accent);
    --body-bg: var(--spring-blossom-body-bg);
    --container-bg: var(--spring-blossom-container-bg);
    --text: var(--spring-blossom-text);
    --text-secondary: var(--spring-blossom-text-secondary);
}

.theme-spring-garden {
    --primary: var(--spring-garden-primary);
    --surface: var(--spring-garden-secondary);
    --accent: var(--spring-garden-accent);
    --body-bg: var(--spring-garden-body-bg);
    --container-bg: var(--spring-garden-container-bg);
    --text: var(--spring-garden-text);
    --text-secondary: var(--spring-garden-text-secondary);
}

.theme-spring-sky {
    --primary: var(--spring-sky-primary);
    --surface: var(--spring-sky-secondary);
    --accent: var(--spring-sky-accent);
    --body-bg: var(--spring-sky-body-bg);
    --container-bg: var(--spring-sky-container-bg);
    --text: var(--spring-sky-text);
    --text-secondary: var(--spring-sky-text-secondary);
}

.theme-summer-ocean {
    --primary: var(--summer-ocean-primary);
    --surface: var(--summer-ocean-secondary);
    --accent: var(--summer-ocean-accent);
    --body-bg: var(--summer-ocean-body-bg);
    --container-bg: var(--summer-ocean-container-bg);
    --text: var(--summer-ocean-text);
    --text-secondary: var(--summer-ocean-text-secondary);
}

.theme-summer-sunset {
    --primary: var(--summer-sunset-primary);
    --surface: var(--summer-sunset-secondary);
    --accent: var(--summer-sunset-accent);
    --body-bg: var(--summer-sunset-body-bg);
    --container-bg: var(--summer-sunset-container-bg);
    --text: var(--summer-sunset-text);
    --text-secondary: var(--summer-sunset-text-secondary);
}

.theme-summer-tropical {
    --primary: var(--summer-tropical-primary);
    --surface: var(--summer-tropical-secondary);
    --accent: var(--summer-tropical-accent);
    --body-bg: var(--summer-tropical-body-bg);
    --container-bg: var(--summer-tropical-container-bg);
    --text: var(--summer-tropical-text);
    --text-secondary: var(--summer-tropical-text-secondary);
}

.theme-autumn-leaves {
    --primary: var(--autumn-leaves-primary);
    --surface: var(--autumn-leaves-secondary);
    --accent: var(--autumn-leaves-accent);
    --body-bg: var(--autumn-leaves-body-bg);
    --container-bg: var(--autumn-leaves-container-bg);
    --text: var(--autumn-leaves-text);
    --text-secondary: var(--autumn-leaves-text-secondary);
}

.theme-autumn-harvest {
    --primary: var(--autumn-harvest-primary);
    --surface: var(--autumn-harvest-secondary);
    --accent: var(--autumn-harvest-accent);
    --body-bg: var(--autumn-harvest-body-bg);
    --container-bg: var(--autumn-harvest-container-bg);
    --text: var(--autumn-harvest-text);
    --text-secondary: var(--autumn-harvest-text-secondary);
}

.theme-autumn-golden {
    --primary: var(--autumn-golden-primary);
    --surface: var(--autumn-golden-secondary);
    --accent: var(--autumn-golden-accent);
    --body-bg: var(--autumn-golden-body-bg);
    --container-bg: var(--autumn-golden-container-bg);
    --text: var(--autumn-golden-text);
    --text-secondary: var(--autumn-golden-text-secondary);
}

.theme-winter-snow {
    --primary: var(--winter-snow-primary);
    --surface: var(--winter-snow-secondary);
    --accent: var(--winter-snow-accent);
    --body-bg: var(--winter-snow-body-bg);
    --container-bg: var(--winter-snow-container-bg);
    --text: var(--winter-snow-text);
    --text-secondary: var(--winter-snow-text-secondary);
}

.theme-winter-frost {
    --primary: var(--winter-frost-primary);
    --surface: var(--winter-frost-secondary);
    --accent: var(--winter-frost-accent);
    --body-bg: var(--winter-frost-body-bg);
    --container-bg: var(--winter-frost-container-bg);
    --text: var(--winter-frost-text);
    --text-secondary: var(--winter-frost-text-secondary);
}

.theme-winter-crystal {
    --primary: var(--winter-crystal-primary);
    --surface: var(--winter-crystal-secondary);
    --accent: var(--winter-crystal-accent);
    --body-bg: var(--winter-crystal-body-bg);
    --container-bg: var(--winter-crystal-container-bg);
    --text: var(--winter-crystal-text);
    --text-secondary: var(--winter-crystal-text-secondary);
}

.theme-rainbow-pastel {
    --primary: var(--rainbow-pastel-primary);
    --surface: var(--rainbow-pastel-secondary);
    --accent: var(--rainbow-pastel-accent);
    --body-bg: var(--rainbow-pastel-body-bg);
    --container-bg: var(--rainbow-pastel-container-bg);
    --text: var(--rainbow-pastel-text);
    --text-secondary: var(--rainbow-pastel-text-secondary);
}

.theme-lavender-dreams {
    --primary: var(--lavender-dreams-primary);
    --surface: var(--lavender-dreams-secondary);
    --accent: var(--lavender-dreams-accent);
    --body-bg: var(--lavender-dreams-body-bg);
    --container-bg: var(--lavender-dreams-container-bg);
    --text: var(--lavender-dreams-text);
    --text-secondary: var(--lavender-dreams-text-secondary);
}

.theme-mint-fresh {
    --primary: var(--mint-fresh-primary);
    --surface: var(--mint-fresh-secondary);
    --accent: var(--mint-fresh-accent);
    --body-bg: var(--mint-fresh-body-bg);
    --container-bg: var(--mint-fresh-container-bg);
    --text: var(--mint-fresh-text);
    --text-secondary: var(--mint-fresh-text-secondary);
}

.theme-peach-cream {
    --primary: var(--peach-cream-primary);
    --surface: var(--peach-cream-secondary);
    --accent: var(--peach-cream-accent);
    --body-bg: var(--peach-cream-body-bg);
    --container-bg: var(--peach-cream-container-bg);
    --text: var(--peach-cream-text);
    --text-secondary: var(--peach-cream-text-secondary);
}

.theme-berry-blush {
    --primary: var(--berry-blush-primary);
    --surface: var(--berry-blush-secondary);
    --accent: var(--berry-blush-accent);
    --body-bg: var(--berry-blush-body-bg);
    --container-bg: var(--berry-blush-container-bg);
    --text: var(--berry-blush-text);
    --text-secondary: var(--berry-blush-text-secondary);
}

.theme-samiljeol {
    --primary: var(--samiljeol-primary);
    --surface: var(--samiljeol-secondary);
    --accent: var(--samiljeol-accent);
    --body-bg: var(--samiljeol-body-bg);
    --container-bg: var(--samiljeol-container-bg);
    --text: var(--samiljeol-text);
    --text-secondary: var(--samiljeol-text-secondary);
}

.theme-gwangbokjeol {
    --primary: var(--gwangbokjeol-primary);
    --surface: var(--gwangbokjeol-secondary);
    --accent: var(--gwangbokjeol-accent);
    --body-bg: var(--gwangbokjeol-body-bg);
    --container-bg: var(--gwangbokjeol-container-bg);
    --text: var(--gwangbokjeol-text);
    --text-secondary: var(--gwangbokjeol-text-secondary);
}

.theme-hangulnal {
    --primary: var(--hangulnal-primary);
    --surface: var(--hangulnal-secondary);
    --accent: var(--hangulnal-accent);
    --body-bg: var(--hangulnal-body-bg);
    --container-bg: var(--hangulnal-container-bg);
    --text: var(--hangulnal-text);
    --text-secondary: var(--hangulnal-text-secondary);
}

.theme-chuseok {
    --primary: var(--chuseok-primary);
    --surface: var(--chuseok-secondary);
    --accent: var(--chuseok-accent);
    --body-bg: var(--chuseok-body-bg);
    --container-bg: var(--chuseok-container-bg);
    --text: var(--chuseok-text);
    --text-secondary: var(--chuseok-text-secondary);
}

.theme-childrenday {
    --primary: var(--childrenday-primary);
    --surface: var(--childrenday-secondary);
    --accent: var(--childrenday-accent);
    --body-bg: var(--childrenday-body-bg);
    --container-bg: var(--childrenday-container-bg);
    --text: var(--childrenday-text);
    --text-secondary: var(--childrenday-text-secondary);
}

.theme-parentsday {
    --primary: var(--parentsday-primary);
    --surface: var(--parentsday-secondary);
    --accent: var(--parentsday-accent);
    --body-bg: var(--parentsday-body-bg);
    --container-bg: var(--parentsday-container-bg);
    --text: var(--parentsday-text);
    --text-secondary: var(--parentsday-text-secondary);
}

.theme-teachersday {
    --primary: var(--teachersday-primary);
    --surface: var(--teachersday-secondary);
    --accent: var(--teachersday-accent);
    --body-bg: var(--teachersday-body-bg);
    --container-bg: var(--teachersday-container-bg);
    --text: var(--teachersday-text);
    --text-secondary: var(--teachersday-text-secondary);
}

.theme-halloween {
    --primary: var(--halloween-primary);
    --surface: var(--halloween-secondary);
    --accent: var(--halloween-accent);
    --body-bg: var(--halloween-body-bg);
    --container-bg: var(--halloween-container-bg);
    --text: var(--halloween-text);
    --text-secondary: var(--halloween-text-secondary);
}

.theme-christmas {
    --primary: var(--christmas-primary);
    --surface: var(--christmas-secondary);
    --accent: var(--christmas-accent);
    --body-bg: var(--christmas-body-bg);
    --container-bg: var(--christmas-container-bg);
    --text: var(--christmas-text);
    --text-secondary: var(--christmas-text-secondary);
}

/* ===================================
   테마 적용 시 포스터 출력물 스타일
   =================================== */

/* 테마 배경 패턴 투명도 높임 (출력물에 색감이 보이도록) */
body[class*="theme-"] .bg-pattern {
    opacity: 0.12 !important;
}

/* 테마 활성화 시 패턴 카드 테두리 색상 */
body[class*="theme-"] .pattern-card {
    border-color: var(--primary);
    border-width: 1.5px;
}

/* Text Color Applications - 메인 타이틀과 푸터 텍스트가 테마에 따라 변경됩니다 */
.main-title {
    color: var(--text) !important;
    transition: color 0.4s ease;
}

.footer-text {
    color: var(--text) !important;
    transition: color 0.4s ease;
}

.footer-logo {
    color: var(--text) !important;
    font-weight: 700;
    transition: color 0.4s ease;
}

.subtitle {
    color: var(--text-secondary) !important;
    transition: color 0.4s ease;
}

/* Additional text elements that should change with theme */
.header h1,
.header p,
.pattern-card,
.control-title,
.control-subtitle {
    transition: color 0.4s ease;
}

/* Additional Background Effects for Better Visual Appeal */
.bg-pattern::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        linear-gradient(45deg, transparent 45%, rgba(255, 255, 255, 0.05) 50%, transparent 55%),
        linear-gradient(-45deg, transparent 45%, rgba(255, 255, 255, 0.03) 50%, transparent 55%);
    pointer-events: none;
}