:root {
    --primary: #6c63ff;
    --primary-light: #8a84ff;
    --secondary: #ff6584;
    --secondary-light: #ff8aa3;
    --accent: #00d4aa;
    --accent-light: #4dffdb;
    --dark: #1a1a2e;
    --darker: #121225;
    --light: #f9f9f9;
    --gray: #a0a0b0;
    --success: #00c853;
    --warning: #ffab00;
    --error: #ff1744;
    --card-bg: rgba(255, 255, 255, 0.1);
    --card-border: rgba(255, 255, 255, 0.2);
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

[data-theme="light"] {
    --dark: #f0f2f5;
    --darker: #e4e7f0;
    --light: #333;
    --gray: #666;
    --card-bg: rgba(255, 255, 255, 0.9);
    --card-border: rgba(0, 0, 0, 0.1);
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--darker), var(--dark));
    color: var(--light);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    transition: var(--transition);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

/* Header Styles */
.header {
    text-align: center;
    margin-bottom: 40px;
    padding: 30px 0;
    position: relative;
}

.title {
    font-size: 3.5rem;
    margin-bottom: 15px;
    background: linear-gradient(45deg, var(--primary), var(--secondary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
    animation: titleGlow 3s ease-in-out infinite alternate;
}

@keyframes titleGlow {
    0% { text-shadow: 0 0 10px rgba(108, 99, 255, 0.5); }
    100% { text-shadow: 0 0 20px rgba(255, 101, 132, 0.7); }
}

.subtitle {
    font-size: 1.3rem;
    color: var(--gray);
    max-width: 700px;
    margin: 0 auto;
}

/* Theme Toggle */
.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
}

.theme-btn {
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    color: white;
    border: none;
    border-radius: 50%;
    width: 60px;
    height: 60px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.theme-btn:hover {
    transform: rotate(15deg) scale(1.1);
}

/* Dashboard Layout */
.dashboard {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-bottom: 50px;
}

@media (max-width: 1024px) {
    .dashboard {
        grid-template-columns: 1fr;
    }
}

/* Card Styles */
.card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 30px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--card-border);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(90deg, var(--primary), var(--secondary), var(--accent));
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
}

.card h2 {
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.8rem;
    color: var(--light);
}

.card h2 i {
    color: var(--primary-light);
}

/* Upload Section */
.upload-section {
    grid-column: 1 / -1;
}

.upload-area {
    width: 100%;
    border: 3px dashed var(--card-border);
    border-radius: 15px;
    padding: 60px 20px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.upload-area::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(108, 99, 255, 0.1), transparent);
    transform: rotate(45deg);
    transition: var(--transition);
}

.upload-area:hover::after {
    transform: rotate(45deg) translate(10%, 10%);
}

.upload-area:hover {
    border-color: var(--primary);
    background: rgba(108, 99, 255, 0.05);
}

.upload-area.active {
    border-color: var(--accent);
    background: rgba(0, 212, 170, 0.05);
}

.upload-icon {
    font-size: 4rem;
    color: var(--primary);
    margin-bottom: 20px;
    transition: var(--transition);
}

.upload-area:hover .upload-icon {
    transform: scale(1.1) translateY(-5px);
    color: var(--secondary);
}

.upload-area h3 {
    margin-bottom: 10px;
    font-size: 1.8rem;
}

.upload-area p {
    color: var(--gray);
    margin-bottom: 25px;
    font-size: 1.1rem;
}

.btn-primary {
    background: linear-gradient(45deg, var(--primary), var(--primary-light));
    color: white;
    border: none;
    border-radius: 12px;
    padding: 15px 30px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 5px 15px rgba(108, 99, 255, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(108, 99, 255, 0.6);
    background: linear-gradient(45deg, var(--primary-light), var(--primary));
}

.image-preview {
    width: 100%;
    text-align: center;
    margin-top: 30px;
    display: none;
}

#previewImg {
    max-width: 100%;
    max-height: 400px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

#previewImg:hover {
    transform: scale(1.02);
}

.preview-info {
    margin-top: 20px;
    padding: 15px;
    background: rgba(108, 99, 255, 0.1);
    border-radius: 12px;
    font-weight: 600;
    color: var(--primary-light);
}

/* Tools Section */
.tool-controls {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.control-group label {
    font-weight: 600;
    color: var(--light);
    display: flex;
    align-items: center;
    gap: 8px;
}

.control-group input, .control-group select {
    padding: 15px;
    border: 1px solid var(--card-border);
    border-radius: 12px;
    background: rgba(0, 0, 0, 0.2);
    color: var(--light);
    font-size: 1rem;
    transition: var(--transition);
}

.control-group input:focus, .control-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(108, 99, 255, 0.3);
}

.control-group input[type="range"] {
    padding: 0;
    height: 10px;
    -webkit-appearance: none;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 5px;
}

.control-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary);
    cursor: pointer;
    box-shadow: 0 0 10px rgba(108, 99, 255, 0.5);
}

.range-value {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.range-value span {
    font-weight: 600;
    color: var(--primary-light);
}

.action-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
}

.btn-action {
    background: rgba(0, 0, 0, 0.2);
    color: var(--light);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 15px 20px;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    position: relative;
    overflow: hidden;
}

.btn-action::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: var(--transition);
}

.btn-action:hover::before {
    left: 100%;
}

.btn-action:hover {
    background: rgba(108, 99, 255, 0.1);
    border-color: var(--primary);
    transform: translateY(-3px);
}

.btn-action:nth-child(1):hover {
    background: rgba(108, 99, 255, 0.2);
    border-color: var(--primary);
}

.btn-action:nth-child(2):hover {
    background: rgba(255, 101, 132, 0.2);
    border-color: var(--secondary);
}

.btn-action:nth-child(3):hover {
    background: rgba(0, 212, 170, 0.2);
    border-color: var(--accent);
}

.btn-action:nth-child(4):hover {
    background: rgba(255, 171, 0, 0.2);
    border-color: var(--warning);
}

/* Preview Section */
.canvas-container {
    width: 100%;
    display: flex;
    justify-content: center;
    margin-bottom: 25px;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    background: rgba(0, 0, 0, 0.2);
    min-height: 300px;
    align-items: center;
    position: relative;
}

#canvas {
    max-width: 100%;
    max-height: 400px;
    border-radius: 10px;
    display: none;
}

.canvas-placeholder {
    color: var(--gray);
    font-size: 1.2rem;
    text-align: center;
    padding: 40px;
}

.preview-actions {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.btn-secondary {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
    border-radius: 12px;
    padding: 15px 30px;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    min-width: 160px;
    justify-content: center;
}

.btn-secondary:hover:not(:disabled) {
    background: var(--primary);
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(108, 99, 255, 0.4);
}

.btn-secondary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

.btn-success {
    background: transparent;
    color: var(--success);
    border: 2px solid var(--success);
    border-radius: 12px;
    padding: 15px 30px;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    min-width: 160px;
    justify-content: center;
}

.btn-success:hover {
    background: var(--success);
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 200, 83, 0.4);
}

/* Download Options */
.download-options {
    margin-top: 20px;
    padding: 20px;
    background: rgba(0, 0, 0, 0.1);
    border-radius: 12px;
    display: none;
}

.download-options.active {
    display: block;
    animation: fadeIn 0.5s ease;
}

.download-options h3 {
    margin-bottom: 15px;
    color: var(--primary-light);
    display: flex;
    align-items: center;
    gap: 10px;
}

.quick-download-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 10px;
    margin-top: 15px;
}

.quick-download-btn {
    background: rgba(108, 99, 255, 0.1);
    color: var(--primary-light);
    border: 1px solid var(--primary);
    border-radius: 8px;
    padding: 10px 15px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
    text-align: center;
}

.quick-download-btn:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-2px);
}

.quick-download-btn i {
    font-size: 1.2rem;
}

/* AI Features Section */
.ai-features {
    margin-top: 50px;
}

.ai-features h2 {
    text-align: center;
    margin-bottom: 30px;
    font-size: 2.5rem;
    background: linear-gradient(45deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
}

.feature-card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 30px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--card-border);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(90deg, var(--primary), var(--secondary), var(--accent));
}

.feature-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
}

.feature-card i {
    font-size: 3rem;
    margin-bottom: 20px;
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    transition: var(--transition);
}

.feature-card:hover i {
    transform: scale(1.2) rotate(5deg);
}

.feature-card h3 {
    margin-bottom: 15px;
    font-size: 1.5rem;
    color: var(--light);
}

.feature-card p {
    color: var(--gray);
    line-height: 1.7;
}

/* Footer */
.footer {
    text-align: center;
    margin-top: 60px;
    padding: 30px;
    color: var(--gray);
    border-top: 1px solid var(--card-border);
}

/* Animations */
.animate-fade-in {
    animation: fadeIn 1s ease;
}

.animate-slide-up {
    animation: slideUp 0.8s ease;
}

.delay-1 {
    animation-delay: 0.2s;
}

.delay-2 {
    animation-delay: 0.4s;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

/* Progress Bar */
.progress-bar {
    width: 100%;
    height: 6px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 3px;
    overflow: hidden;
    margin: 10px 0;
    display: none;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: 3px;
    transition: width 0.3s ease;
    width: 0%;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    .title {
        font-size: 2.5rem;
    }
    
    .dashboard {
        gap: 20px;
    }
    
    .tool-controls {
        grid-template-columns: 1fr;
    }
    
    .action-buttons {
        grid-template-columns: 1fr;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .preview-actions {
        flex-direction: column;
    }
    
    .theme-btn {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
    
    .quick-download-buttons {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .btn-secondary, .btn-success {
        min-width: 140px;
        padding: 12px 20px;
    }
}