/* ==================== CSS Variables & Reset ==================== */
:root {
    /* Dino Lab Color Palette - Cute × Tech × Clean */
    --dino-sky: #A8D8EA;
    --dino-lavender: #AA96DA;
    --dino-pink: #FCBAD3;
    --dino-cream: #FFFFD2;
    --dino-mint: #A8E6CF;
    --dino-peach: #FFD3B6;
    
    /* Primary Colors */
    --primary-gradient: linear-gradient(135deg, #A8D8EA 0%, #AA96DA 50%, #FCBAD3 100%);
    --secondary-gradient: linear-gradient(135deg, #A8E6CF 0%, #FFFFD2 100%);
    --success-gradient: linear-gradient(135deg, #A8E6CF 0%, #A8D8EA 100%);
    --danger-gradient: linear-gradient(135deg, #FCBAD3 0%, #FFD3B6 100%);
    
    --primary-color: #AA96DA;
    --primary-dark: #9580C8;
    --secondary-color: #A8D8EA;
    --success-color: #A8E6CF;
    --danger-color: #FCBAD3;
    --accent-color: #FFFFD2;
    
    /* Background Colors - Light Pastel Theme */
    --bg-primary: #FFF9F0;
    --bg-secondary: #FFFFFF;
    --bg-tertiary: #F8F4FF;
    --bg-card: rgba(255, 255, 255, 0.8);
    --bg-hover: rgba(168, 216, 234, 0.15);
    
    /* Text Colors */
    --text-primary: #4A4A68;
    --text-secondary: #7B7B9E;
    --text-tertiary: #A8A8C0;
    
    /* Border Colors */
    --border-color: rgba(170, 150, 218, 0.2);
    --border-hover: rgba(170, 150, 218, 0.4);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Border Radius - Extra Rounded for Cute Aesthetic */
    --radius-sm: 0.75rem;
    --radius-md: 1.25rem;
    --radius-lg: 2rem;
    --radius-xl: 2.5rem;
    --radius-full: 9999px;
    
    /* Shadows - Softer for Cute Look */
    --shadow-sm: 0 2px 12px rgba(170, 150, 218, 0.1);
    --shadow-md: 0 4px 20px rgba(170, 150, 218, 0.15);
    --shadow-lg: 0 8px 32px rgba(170, 150, 218, 0.2);
    --shadow-glow: 0 0 24px rgba(168, 216, 234, 0.3);
    
    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* ==================== Dark Theme ==================== */
[data-theme="dark"] {
    /* Dino Lab Dark Mode - Maintaining Cute × Tech × Clean */
    --dino-sky: #6B9FBD;
    --dino-lavender: #9B7FD4;
    --dino-pink: #E89AC7;
    --dino-cream: #E8E89F;
    --dino-mint: #7FD4B8;
    --dino-peach: #E8B89F;
    
    /* Primary Colors - Brighter for dark background */
    --primary-gradient: linear-gradient(135deg, #6B9FBD 0%, #9B7FD4 50%, #E89AC7 100%);
    --secondary-gradient: linear-gradient(135deg, #7FD4B8 0%, #E8E89F 100%);
    --success-gradient: linear-gradient(135deg, #7FD4B8 0%, #6B9FBD 100%);
    --danger-gradient: linear-gradient(135deg, #E89AC7 0%, #E8B89F 100%);
    
    --primary-color: #9B7FD4;
    --primary-dark: #8A6EC3;
    --secondary-color: #6B9FBD;
    --success-color: #7FD4B8;
    --danger-color: #E89AC7;
    --accent-color: #E8E89F;
    
    /* Background Colors - Dark Pastel Theme */
    --bg-primary: #1A1625;
    --bg-secondary: #251E35;
    --bg-tertiary: #2D2440;
    --bg-card: rgba(37, 30, 53, 0.8);
    --bg-hover: rgba(155, 127, 212, 0.15);
    
    /* Text Colors */
    --text-primary: #E8E4F3;
    --text-secondary: #B8B4C8;
    --text-tertiary: #8A8699;
    
    /* Border Colors */
    --border-color: rgba(155, 127, 212, 0.25);
    --border-hover: rgba(155, 127, 212, 0.45);
    
    /* Shadows - Darker with glow */
    --shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 24px rgba(155, 127, 212, 0.4);
}

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

body {
    font-family: 'Inter', 'Noto Sans TC', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    position: relative;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* ==================== Background Decorations ==================== */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 15% 20%, rgba(168, 216, 234, 0.15) 0%, transparent 40%),
        radial-gradient(circle at 85% 80%, rgba(252, 186, 211, 0.15) 0%, transparent 40%),
        radial-gradient(circle at 50% 50%, rgba(170, 150, 218, 0.08) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

/* Cute Dino Decorations */
body::after {
    content: '🦕';
    position: fixed;
    bottom: 20px;
    right: 20px;
    font-size: 3rem;
    opacity: 0.1;
    pointer-events: none;
    z-index: 0;
    animation: float 6s ease-in-out infinite;
}

.app-container {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Dino footprints decoration */
.app-container::before {
    content: '🦖';
    position: fixed;
    top: 100px;
    left: 30px;
    font-size: 2rem;
    opacity: 0.08;
    pointer-events: none;
    z-index: 0;
    animation: float 8s ease-in-out infinite;
    animation-delay: 1s;
}

/* ==================== Header ==================== */
.header {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border-bottom: 2px solid var(--border-color);
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    transition: transform var(--transition-base);
}

.logo:hover {
    transform: scale(1.05);
}

.logo svg {
    filter: drop-shadow(0 2px 8px rgba(170, 150, 218, 0.3));
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.5px;
}

.header-actions {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

/* ==================== Theme Toggle ==================== */
.theme-icon {
    transition: transform var(--transition-base), opacity var(--transition-fast);
}

#themeToggle:hover .theme-icon {
    transform: rotate(20deg) scale(1.1);
}

[data-theme="dark"] .sun-icon {
    display: none;
}

[data-theme="dark"] .moon-icon {
    display: block !important;
}

/* ==================== Language Selector ==================== */
.language-selector {
    position: relative;
}

.btn-language {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    border: 2px solid var(--border-color);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    min-width: 140px;
    box-shadow: var(--shadow-sm);
}

.btn-language:hover {
    background: var(--bg-hover);
    border-color: var(--border-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.language-flag {
    font-size: 1.25rem;
    line-height: 1;
}

.language-name {
    flex: 1;
    text-align: left;
}

.language-arrow {
    transition: transform var(--transition-fast);
    color: var(--text-secondary);
}

.language-selector.active .language-arrow {
    transform: rotate(180deg);
}

.language-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 180px;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-base);
    z-index: 1000;
    overflow: hidden;
}

.language-selector.active .language-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.language-option {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
}

.language-option:hover {
    background: var(--bg-hover);
}

.language-option:not(:last-child) {
    border-bottom: 1px solid var(--border-color);
}

.language-option .language-flag {
    font-size: 1.5rem;
}

.language-option .language-name {
    flex: 1;
    font-size: 0.95rem;
    font-weight: 500;
}

.language-check {
    color: var(--primary-color);
    font-size: 1.1rem;
    font-weight: 700;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.language-option.active .language-check {
    opacity: 1;
}

.language-option.active {
    background: rgba(170, 150, 218, 0.1);
}

.language-option.active .language-name {
    color: var(--primary-color);
    font-weight: 600;
}

/* ==================== Buttons ==================== */
.btn-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    border: 2px solid var(--border-color);
    background: var(--bg-secondary);
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-bounce);
    box-shadow: var(--shadow-sm);
}

.btn-icon:hover {
    background: var(--bg-hover);
    border-color: var(--border-hover);
    transform: translateY(-2px) scale(1.05);
    box-shadow: var(--shadow-md);
}

.btn-primary {
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-full);
    border: none;
    background: var(--primary-gradient);
    color: white;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    transition: all var(--transition-bounce);
    box-shadow: var(--shadow-md);
    white-space: nowrap;
    min-width: fit-content;
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-primary:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.btn-primary:active {
    transform: translateY(-1px) scale(0.98);
}

.btn-secondary {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    border: 2px solid var(--border-color);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: all var(--transition-base);
    width: 100%;
    justify-content: center;
    white-space: normal;
    text-align: center;
    line-height: 1.4;
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
    background: var(--bg-hover);
    border-color: var(--border-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-success {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    border: none;
    background: var(--success-gradient);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: all var(--transition-bounce);
    box-shadow: var(--shadow-md);
    flex: 1;
    justify-content: center;
    white-space: normal;
    text-align: center;
    line-height: 1.4;
    min-height: 44px;
}

.btn-success:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: var(--shadow-lg);
}

.btn-danger {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    border: 2px solid rgba(252, 186, 211, 0.4);
    background: rgba(252, 186, 211, 0.15);
    color: #D8739F;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: all var(--transition-base);
    flex: 1;
    justify-content: center;
    white-space: normal;
    text-align: center;
    line-height: 1.4;
    min-height: 44px;
    box-shadow: var(--shadow-sm);
}

.btn-danger:hover {
    background: rgba(252, 186, 211, 0.25);
    border-color: rgba(252, 186, 211, 0.6);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-text {
    padding: var(--spacing-sm);
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: all var(--transition-fast);
    width: 100%;
    justify-content: center;
    margin-top: var(--spacing-md);
}

.btn-text:hover {
    color: var(--primary-color);
    transform: translateX(-4px);
}

/* ==================== Main Content ==================== */
.main-content {
    flex: 1;
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-lg);
}

/* ==================== Upload Section ==================== */
.upload-section {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - 200px);
}

.upload-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 3px dashed var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    text-align: center;
    max-width: 500px;
    width: 100%;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
}

.upload-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    background: var(--bg-secondary);
}

.upload-icon {
    margin-bottom: var(--spacing-md);
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

.upload-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.upload-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    font-size: 1rem;
}

/* ==================== Example Preview ==================== */
.example-preview {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 2px dashed var(--border-color);
}

.example-label {
    text-align: center;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.example-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
}

.example-item {
    flex: 1;
    max-width: 120px;
}

.example-box {
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    transition: all var(--transition-base);
}

.example-box:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.example-box.after {
    background: linear-gradient(135deg, rgba(168, 216, 234, 0.1) 0%, rgba(170, 150, 218, 0.1) 100%);
}

.example-text {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.example-arrow {
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: bold;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { 
        opacity: 0.6;
        transform: scale(1);
    }
    50% { 
        opacity: 1;
        transform: scale(1.2);
    }
}

/* ==================== Editor Section ==================== */
.editor-section {
    animation: fadeIn var(--transition-base);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.editor-container {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: var(--spacing-lg);
    min-height: calc(100vh - 200px);
}

/* ==================== Canvas Area ==================== */
.canvas-area {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.canvas-wrapper {
    position: relative;
    max-width: 100%;
    max-height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

#mainCanvas {
    max-width: 100%;
    max-height: calc(100vh - 300px);
    display: block;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
}

#watermarkContainer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

/* ==================== Watermark Elements ==================== */
.watermark-element {
    position: absolute;
    cursor: move;
    pointer-events: auto;
    user-select: none;
    transition: transform var(--transition-fast);
    border: 2px solid transparent;
    border-radius: var(--radius-sm);
    padding: 4px;
}

.watermark-element:hover {
    transform: scale(1.05);
}

.watermark-element.selected {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(170, 150, 218, 0.3);
}

.watermark-element.dragging {
    cursor: grabbing;
    z-index: 1000;
}

.watermark-text {
    font-weight: 700;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
    white-space: nowrap;
}

.watermark-image {
    max-width: 300px;
    max-height: 300px;
    filter: drop-shadow(2px 2px 4px rgba(0, 0, 0, 0.2));
}

/* ==================== Control Panel ==================== */
.control-panel {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    max-height: calc(100vh - 200px);
    overflow-y: auto;
    box-shadow: var(--shadow-md);
}

.control-panel::-webkit-scrollbar {
    width: 8px;
}

.control-panel::-webkit-scrollbar-track {
    background: rgba(170, 150, 218, 0.1);
    border-radius: var(--radius-sm);
}

.control-panel::-webkit-scrollbar-thumb {
    background: var(--primary-gradient);
    border-radius: var(--radius-sm);
}

.panel-header h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

/* ==================== Control Groups ==================== */
.control-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.edit-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--border-color);
    margin-bottom: var(--spacing-sm);
}

.btn-icon-small {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    border: 2px solid rgba(252, 186, 211, 0.4);
    background: rgba(252, 186, 211, 0.15);
    color: #D8739F;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-bounce);
}

.btn-icon-small:hover {
    background: rgba(252, 186, 211, 0.25);
    border-color: rgba(252, 186, 211, 0.6);
    transform: scale(1.1) rotate(5deg);
}

.control-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ==================== Type Selector ==================== */
.type-selector {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xs);
}

.type-btn {
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    border: 2px solid var(--border-color);
    background: var(--bg-secondary);
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    transition: all var(--transition-bounce);
    box-shadow: var(--shadow-sm);
}

.type-btn:hover {
    background: var(--bg-hover);
    border-color: var(--border-hover);
    transform: translateY(-2px);
}

.type-btn.active {
    background: var(--primary-gradient);
    border-color: transparent;
    color: white;
    box-shadow: var(--shadow-glow);
    transform: scale(1.05);
}

/* ==================== Inputs ==================== */
.text-input {
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    border: 2px solid var(--border-color);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.text-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(170, 150, 218, 0.15);
}

.text-input::placeholder {
    color: var(--text-tertiary);
}

/* ==================== Slider ==================== */
.slider-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.slider {
    flex: 1;
    height: 12px;
    border-radius: var(--radius-full);
    background: linear-gradient(to right, 
        #A8D8EA 0%, 
        #AA96DA var(--slider-progress, 50%), 
        rgba(170, 150, 218, 0.2) var(--slider-progress, 50%), 
        rgba(170, 150, 218, 0.2) 100%);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
    transition: background var(--transition-fast);
    border: 2px solid rgba(170, 150, 218, 0.2);
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.1);
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--primary-gradient);
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(170, 150, 218, 0.4);
    transition: all var(--transition-bounce);
    border: 3px solid white;
}

.slider::-webkit-slider-thumb:hover {
    transform: scale(1.3);
    box-shadow: 0 0 16px rgba(170, 150, 218, 0.6);
}

.slider::-moz-range-thumb {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--primary-gradient);
    cursor: pointer;
    border: 3px solid white;
    box-shadow: 0 2px 8px rgba(170, 150, 218, 0.4);
    transition: all var(--transition-bounce);
}

.slider::-moz-range-thumb:hover {
    transform: scale(1.3);
    box-shadow: 0 0 16px rgba(170, 150, 218, 0.6);
}

.slider::-moz-range-track {
    height: 12px;
    border-radius: var(--radius-full);
    background: rgba(170, 150, 218, 0.2);
    border: 2px solid rgba(170, 150, 218, 0.2);
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.1);
}

.slider-value {
    min-width: 60px;
    text-align: right;
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--primary-color);
    background: rgba(170, 150, 218, 0.15);
    padding: 6px 12px;
    border-radius: var(--radius-full);
}

/* ==================== Color Picker ==================== */
.color-picker-wrapper {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs);
    border-radius: var(--radius-md);
    border: 2px solid var(--border-color);
    background: var(--bg-secondary);
    box-shadow: var(--shadow-sm);
}

.color-input {
    width: 40px;
    height: 40px;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    background: transparent;
}

.color-input::-webkit-color-swatch-wrapper {
    padding: 0;
}

.color-input::-webkit-color-swatch {
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
}

.color-label {
    flex: 1;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
}

/* ==================== Action Buttons ==================== */
.action-buttons {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

/* ==================== Responsive Design ==================== */
@media (max-width: 1024px) {
    .editor-container {
        grid-template-columns: 1fr;
    }
    
    .control-panel {
        max-height: none;
    }
}

@media (max-width: 768px) {
    .main-content {
        padding: var(--spacing-md);
    }
    
    .header-content {
        padding: 0 var(--spacing-md);
    }
    
    .logo h1 {
        font-size: 1.25rem;
    }
    
    .upload-card {
        padding: var(--spacing-lg);
    }
    
    .upload-title {
        font-size: 1.5rem;
    }
    
    .action-buttons {
        flex-direction: column;
    }
    
    body::after,
    .app-container::before {
        display: none;
    }
}