/**
 * Dental AI Analyzer - Main Stylesheet
 * Modern, responsive design for dental analysis tool
 */

/* ===== GLOBAL STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

.dental-ai-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    margin-top: 20px;
    margin-bottom: 20px;
}

/* ===== HEADER ===== */
.dental-ai-header {
    text-align: center;
    margin-bottom: 40px;
    padding: 30px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 15px;
    color: white;
    position: relative;
    overflow: hidden;
}

.dental-ai-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="teeth" x="0" y="0" width="20" height="20" patternUnits="userSpaceOnUse"><path d="M0 10 Q5 0 10 10 Q15 20 20 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23teeth)"/></svg>');
    opacity: 0.3;
}

.dental-ai-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 10px;
    position: relative;
    z-index: 1;
}

.dental-ai-header p {
    font-size: 1.1rem;
    opacity: 0.9;
    position: relative;
    z-index: 1;
}

/* Upload Section */
.upload-section {
    margin: 30px 0;
}

.upload-area {
    border: 3px dashed #007cba;
    border-radius: 15px;
    padding: 40px 20px;
    text-align: center;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    transition: all 0.3s ease;
    position: relative;
}

.upload-area:hover {
    border-color: #005a87;
    background: linear-gradient(135deg, #e9ecef 0%, #dee2e6 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 124, 186, 0.15);
}

.upload-area.drag-over {
    border-color: #28a745;
    background: linear-gradient(135deg, #d4edda 0%, #c3e6cb 100%);
    transform: scale(1.02);
}

.upload-icon {
    font-size: 48px;
    margin-bottom: 20px;
    color: #007cba;
}

.upload-text h3 {
    color: #2c3e50;
    margin-bottom: 10px;
    font-size: 24px;
    font-weight: 600;
}

.upload-text p {
    color: #6c757d;
    margin-bottom: 5px;
    font-size: 16px;
}

.upload-text small {
    color: #868e96;
    font-size: 14px;
}

/* Button Container */
.button-container {
    display: flex;
    gap: 15px;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    margin-top: 25px;
}

/* Upload Buttons */
.upload-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    min-width: 140px;
    position: relative;
    z-index: 10;
    background: none;
    outline: none;
}

.upload-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.upload-button:focus {
    outline: 2px solid #007cba;
    outline-offset: 2px;
}

.primary-button {
    background: linear-gradient(135deg, #007cba 0%, #005a87 100%);
    color: white;
}

.primary-button:hover {
    background: linear-gradient(135deg, #005a87 0%, #004085 100%);
}

.secondary-button {
    background: linear-gradient(135deg, #28a745 0%, #1e7e34 100%);
    color: white;
}

.secondary-button:hover {
    background: linear-gradient(135deg, #1e7e34 0%, #155724 100%);
}

#image-upload {
    display: none;
}

/* ===== PREVIEW SECTION ===== */
.preview-section {
    text-align: center;
    padding: 30px;
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    margin-bottom: 30px;
}

.preview-image {
    max-width: 100%;
    max-height: 400px;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    margin-bottom: 20px;
}

.retake-btn {
    background: #ff6b6b;
    color: white;
    border: none;
    padding: 12px 25px;
    border-radius: 50px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.retake-btn:hover {
    background: #ff5252;
    transform: translateY(-2px);
}

/* ===== LOADING SECTION ===== */
.loading-section {
    text-align: center;
    padding: 60px 20px;
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    margin-bottom: 30px;
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

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

.loading-message {
    font-size: 1.2rem;
    color: #333;
    font-weight: 500;
}

/* ===== RESULTS SECTION ===== */
.results-section {
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    margin-bottom: 30px;
}

.results-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 30px;
    text-align: center;
}

.results-title {
    font-size: 2rem;
    margin-bottom: 10px;
}

.results-subtitle {
    opacity: 0.9;
    font-size: 1.1rem;
}

.results-content {
    padding: 30px;
}

.detection-card {
    background: linear-gradient(135deg, #f8f9ff 0%, #e8ecff 100%);
    border-radius: 15px;
    padding: 25px;
    margin-bottom: 30px;
    text-align: center;
    border-left: 5px solid #667eea;
}

.detected-condition {
    font-size: 1.8rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 10px;
}

.confidence-score {
    font-size: 1.2rem;
    color: #667eea;
    font-weight: 600;
}

/* ===== LANGUAGE TOGGLE ===== */
.language-toggle {
    display: flex;
    justify-content: center;
    margin-bottom: 30px;
    background: #f8f9fa;
    border-radius: 50px;
    padding: 5px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.lang-btn {
    background: transparent;
    border: none;
    padding: 12px 25px;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    color: #666;
    position: relative;
    overflow: hidden;
}

.lang-btn.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
}

.lang-btn:hover:not(.active) {
    background: rgba(102, 126, 234, 0.1);
    color: #667eea;
}

/* ===== EXPLANATION CARDS ===== */
.explanation-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    margin-bottom: 30px;
}

.explanation-card {
    background: white;
    border-radius: 15px;
    padding: 25px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    border-top: 4px solid #667eea;
    transition: all 0.3s ease;
}

.explanation-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.card-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
}

.card-title i {
    margin-right: 10px;
    color: #667eea;
}

.card-content {
    color: #555;
    line-height: 1.7;
}

.card-content p {
    margin-bottom: 10px;
}

/* Urdu text styling */
.content-urdu {
    direction: rtl;
    text-align: right;
    font-family: 'Noto Nastaliq Urdu', 'Jameel Noori Nastaleeq', serif;
    font-size: 1.1rem;
    line-height: 2;
}

/* ===== ACTION BUTTONS ===== */
.action-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 30px;
    flex-wrap: wrap;
}

.action-btn {
    padding: 12px 25px;
    border: none;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.primary-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
}

.primary-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

.secondary-btn {
    background: #f8f9fa;
    color: #333;
    border: 2px solid #e9ecef;
}

.secondary-btn:hover {
    background: #e9ecef;
    transform: translateY(-2px);
}

/* ===== ERROR SECTION ===== */
.error-section {
    background: #fff5f5;
    border: 2px solid #fed7d7;
    border-radius: 15px;
    padding: 25px;
    text-align: center;
    margin-bottom: 30px;
    color: #c53030;
}

.error-message {
    font-size: 1.1rem;
    font-weight: 500;
}

/* ===== SHARE MODAL ===== */
.share-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    backdrop-filter: blur(5px);
}

.share-modal-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: white;
    padding: 30px;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    max-width: 400px;
    width: 90%;
    text-align: center;
}

.share-modal-close {
    position: absolute;
    top: 15px;
    right: 20px;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #666;
}

.share-options {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    margin-top: 20px;
}

.share-option {
    padding: 15px;
    border: 2px solid #e9ecef;
    border-radius: 10px;
    background: white;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    color: #333;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.share-option:hover {
    border-color: #667eea;
    background: #f8f9ff;
    transform: translateY(-2px);
}

/* ===== CHATBOT STYLES ===== */
.chatbot-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 1000;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.chatbot-toggle {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 15px 25px;
    border-radius: 50px;
    cursor: pointer;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 1rem;
}

.chatbot-toggle:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.4);
}

.chatbot-window {
    position: absolute;
    bottom: 80px;
    right: 0;
    width: 350px;
    height: 500px;
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    display: none;
    flex-direction: column;
    overflow: hidden;
    transform: scale(0.8);
    opacity: 0;
    transition: all 0.3s ease;
}

.chatbot-window.open {
    display: flex;
    transform: scale(1);
    opacity: 1;
}

.chatbot-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.chatbot-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 1.1rem;
}

.chatbot-close {
    background: none;
    border: none;
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    padding: 5px;
    border-radius: 50%;
    transition: background 0.3s ease;
}

.chatbot-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

.chatbot-messages {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    background: #f8f9fa;
}

.message {
    display: flex;
    margin-bottom: 15px;
    gap: 10px;
}

.message-avatar {
    width: 35px;
    height: 35px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
}

.bot-message .message-avatar {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.user-message .message-avatar {
    background: #e9ecef;
    color: #666;
}

.message-content {
    flex: 1;
    background: white;
    padding: 12px 16px;
    border-radius: 18px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    max-width: 80%;
}

.bot-message .message-content {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.user-message .message-content {
    background: white;
    color: #333;
    margin-left: auto;
}

.message-content p {
    margin: 0;
    line-height: 1.4;
}

.quick-questions {
    margin-top: 10px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.quick-question {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    padding: 8px 12px;
    border-radius: 15px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: left;
}

.quick-question:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateX(5px);
}

.typing-indicator {
    display: flex;
    gap: 4px;
    padding: 8px 0;
}

.typing-indicator span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #667eea;
    animation: typing 1.4s infinite ease-in-out;
}

.typing-indicator span:nth-child(1) { animation-delay: -0.32s; }
.typing-indicator span:nth-child(2) { animation-delay: -0.16s; }

@keyframes typing {
    0%, 80%, 100% {
        transform: scale(0.8);
        opacity: 0.5;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}

.chatbot-input-container {
    padding: 20px;
    background: white;
    border-top: 1px solid #e9ecef;
    display: flex;
    gap: 10px;
}

.chatbot-input {
    flex: 1;
    border: 2px solid #e9ecef;
    border-radius: 25px;
    padding: 12px 20px;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.3s ease;
}

.chatbot-input:focus {
    border-color: #667eea;
}

.chatbot-send {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.chatbot-send:hover {
    transform: scale(1.1);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
}

/* Responsive Design */
@media (max-width: 768px) {
    .upload-area {
        padding: 30px 15px;
    }
    
    .button-container {
        flex-direction: column;
        gap: 12px;
    }
    
    .upload-button {
        width: 100%;
        max-width: 280px;
    }
    
    .upload-text h3 {
        font-size: 20px;
    }
    
    .upload-text p {
        font-size: 14px;
    }
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    .dental-ai-container {
        margin: 10px;
        padding: 15px;
    }
    
    .dental-ai-header h1 {
        font-size: 2rem;
    }
    
    .upload-area {
        padding: 40px 15px;
    }
    
    .upload-buttons {
        flex-direction: column;
        gap: 10px;
    }
    
    .upload-btn {
        width: 100%;
        min-width: auto;
    }
    
    .explanation-grid {
        grid-template-columns: 1fr;
    }
    
    .action-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .action-btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
    
    .chatbot-window {
        width: 90vw;
        height: 70vh;
        right: 5vw;
        bottom: 100px;
    }
    
    .language-toggle {
        flex-direction: column;
        gap: 5px;
    }
    
    .lang-btn {
        border-radius: 10px;
    }
}

@media (max-width: 480px) {
    .dental-ai-header h1 {
        font-size: 1.8rem;
    }
    
    .upload-area {
        padding: 30px 10px;
    }
    
    .upload-text h3 {
        font-size: 1.3rem;
    }
    
    .detected-condition {
        font-size: 1.5rem;
    }
    
    .chatbot-toggle {
        padding: 12px 20px;
        font-size: 0.9rem;
    }
    
    .chatbot-toggle span {
        display: none;
    }
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.explanation-card {
    animation: fadeInUp 0.6s ease forwards;
}

.explanation-card:nth-child(1) { animation-delay: 0.1s; }
.explanation-card:nth-child(2) { animation-delay: 0.2s; }
.explanation-card:nth-child(3) { animation-delay: 0.3s; }
.explanation-card:nth-child(4) { animation-delay: 0.4s; }

/* ===== UTILITY CLASSES ===== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-20 { margin-bottom: 20px; }
.mb-30 { margin-bottom: 30px; }

.hidden { display: none; }
.visible { display: block; }

/* ===== PRINT STYLES ===== */
@media print {
    .chatbot-container,
    .action-buttons,
    .share-modal {
        display: none !important;
    }
    
    .dental-ai-container {
        box-shadow: none;
        background: white;
    }
}