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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 40px;
    color: white;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    margin-bottom: 10px;
}

.logo-icon {
    font-size: 3rem;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.header h1 {
    font-size: 3rem;
    font-weight: 700;
    background: linear-gradient(45deg, #fff, #f0f0f0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    font-size: 1.2rem;
    opacity: 0.9;
}

/* Mode Selector */
.mode-selector {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.mode-btn {
    padding: 12px 24px;
    border: none;
    border-radius: 25px;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.mode-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.mode-btn.active {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

/* Input Section */
.input-section {
    background: rgba(255, 255, 255, 0.95);
    padding: 30px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    margin-bottom: 30px;
    backdrop-filter: blur(10px);
}

#promptInput {
    width: 100%;
    padding: 15px;
    border: 2px solid #e1e5e9;
    border-radius: 12px;
    font-size: 1rem;
    resize: vertical;
    transition: border-color 0.3s ease;
    font-family: inherit;
}

#promptInput:focus {
    outline: none;
    border-color: #667eea;
}

.action-buttons {
    display: flex;
    gap: 15px;
    margin-top: 20px;
    flex-wrap: wrap;
}

.generate-btn, .clear-btn {
    padding: 12px 30px;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
}

.generate-btn {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    flex: 1;
    min-width: 150px;
}

.generate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.clear-btn {
    background: #6c757d;
    color: white;
}

.clear-btn:hover {
    background: #5a6268;
    transform: translateY(-2px);
}

/* Results Section */
.results-section {
    background: rgba(255, 255, 255, 0.95);
    padding: 30px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    margin-bottom: 30px;
    backdrop-filter: blur(10px);
}

.loading {
    text-align: center;
    padding: 40px;
}

.spinner {
    border: 4px solid #f3f3f3;
    border-top: 4px solid #667eea;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

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

.results h3, .error h3 {
    color: #333;
    margin-bottom: 15px;
    font-size: 1.5rem;
}

.output-content {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 12px;
    border: 1px solid #e9ecef;
}

.output-content img, .output-content video {
    max-width: 100%;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.output-text {
    white-space: pre-wrap;
    line-height: 1.6;
}

.download-btn {
    margin-top: 15px;
    padding: 10px 20px;
    background: #28a745;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.3s ease;
}

.download-btn:hover {
    background: #218838;
}

.error {
    background: #f8d7da;
    color: #721c24;
    padding: 20px;
    border-radius: 12px;
    border: 1px solid #f5c6cb;
}

/* Features */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.feature-card {
    background: rgba(255, 255, 255, 0.95);
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 15px;
}

.feature-card h3 {
    color: #333;
    margin-bottom: 10px;
    font-size: 1.3rem;
}

.feature-card p {
    color: #666;
    line-height: 1.5;
}

/* Utility Classes */
.hidden {
    display: none !important;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header h1 {
        font-size: 2rem;
    }
    
    .logo {
        flex-direction: column;
        gap: 10px;
    }
    
    .mode-selector {
        flex-direction: column;
        align-items: center;
    }
    
    .mode-btn {
        width: 200px;
    }
    
    .action-buttons {
        flex-direction: column;
    }
    
    .features {
        grid-template-columns: 1fr;
    }
    
    .container {
        padding: 10px;
    }
}

@media (max-width: 480px) {
    .header h1 {
        font-size: 1.5rem;
    }
    
    .tagline {
        font-size: 1rem;
    }
    
    .input-section, .results-section {
        padding: 20px;
    }
}