/* Custom styles for AI Lecture Generator */

:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --success-color: #27ae60;
    --warning-color: #f39c12;
    --error-color: #e74c3c;
    --background-color: #f8f9fa;
    --text-color: #2c3e50;
    --border-color: #ddd;
}

/* Global styles */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
}

/* Header styles */
.gradio-container h1 {
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 2rem;
    font-size: 2.5rem;
    font-weight: bold;
}

/* Status boxes */
.status-box {
    padding: 15px;
    border-radius: 8px;
    margin: 15px 0;
    font-weight: 500;
    border-left: 4px solid;
}

.status-box.success {
    background-color: #d4edda;
    border-left-color: var(--success-color);
    color: #155724;
}

.status-box.error {
    background-color: #f8d7da;
    border-left-color: var(--error-color);
    color: #721c24;
}

.status-box.processing {
    background-color: #d1ecf1;
    border-left-color: var(--secondary-color);
    color: #0c5460;
}

.status-box.warning {
    background-color: #fff3cd;
    border-left-color: var(--warning-color);
    color: #856404;
}

/* Button styles */
.gradio-button {
    background: linear-gradient(135deg, var(--secondary-color), #2980b9);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 6px;
    font-weight: 500;
    transition: all 0.3s ease;
    cursor: pointer;
}

.gradio-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(52, 152, 219, 0.3);
}

.gradio-button.primary {
    background: linear-gradient(135deg, var(--success-color), #229954);
}

.gradio-button.secondary {
    background: linear-gradient(135deg, #95a5a6, #7f8c8d);
}

/* File upload area */
.file-upload {
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
}

.file-upload:hover {
    border-color: var(--secondary-color);
    background-color: #f0f8ff;
}

/* Input fields */
.gradio-textbox,
.gradio-dropdown {
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 10px;
    font-size: 14px;
    transition: border-color 0.3s ease;
}

.gradio-textbox:focus,
.gradio-dropdown:focus {
    border-color: var(--secondary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

/* Chat interface */
.chatbot {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.chat-message {
    padding: 12px;
    margin: 8px;
    border-radius: 8px;
    max-width: 80%;
}

.chat-message.user {
    background: var(--secondary-color);
    color: white;
    margin-left: auto;
}

.chat-message.assistant {
    background: #f1f3f4;
    color: var(--text-color);
    margin-right: auto;
}

/* Tab styles */
.gradio-tab {
    border-bottom: 3px solid transparent;
    padding: 12px 24px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.gradio-tab.selected {
    border-bottom-color: var(--secondary-color);
    color: var(--secondary-color);
}

/* Card-like containers */
.gradio-column {
    background: white;
    border-radius: 8px;
    padding: 20px;
    margin: 10px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* JSON display */
.gradio-json {
    background: #f8f9fa;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 15px;
    font-family: 'Courier New', monospace;
    font-size: 13px;
}

/* Loading animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid var(--secondary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Progress bar */
.progress-bar {
    width: 100%;
    height: 8px;
    background-color: #f0f0f0;
    border-radius: 4px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--secondary-color), var(--success-color));
    transition: width 0.3s ease;
}

/* Responsive design */
@media (max-width: 768px) {
    .gradio-container {
        padding: 10px;
    }
    
    .gradio-container h1 {
        font-size: 2rem;
    }
    
    .gradio-column {
        margin: 5px;
        padding: 15px;
    }
    
    .chat-message {
        max-width: 95%;
    }
}

/* Accessibility improvements */
.gradio-button:focus,
.gradio-textbox:focus,
.gradio-dropdown:focus {
    outline: 2px solid var(--secondary-color);
    outline-offset: 2px;
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --background-color: #1a1a1a;
        --text-color: #ffffff;
        --border-color: #404040;
    }
    
    .gradio-column {
        background: #2d2d2d;
        color: var(--text-color);
    }
    
    .gradio-json {
        background: #2d2d2d;
        color: var(--text-color);
    }
    
    .chatbot {
        background: #2d2d2d;
    }
    
    .chat-message.assistant {
        background: #404040;
        color: var(--text-color);
    }
}