/* ===== RESET & BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors - Premium Dark Theme */
    --bg-primary: #0a0e1a;
    --bg-secondary: #131827;
    --bg-tertiary: #1a2035;
    --accent-primary: #6366f1;
    --accent-secondary: #8b5cf6;
    --accent-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border-color: #1e293b;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Effects */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --blur-glass: blur(16px);

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: var(--font-family);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

/* Animated Background */
body::before {
    content: '';
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 20% 50%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
    animation: rotate 30s linear infinite;
    z-index: -1;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ===== HEADER ===== */
.header {
    background: rgba(19, 24, 39, 0.8);
    backdrop-filter: var(--blur-glass);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-lg) 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.header-content {
    text-align: center;
}

.logo {
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    animation: fadeInDown 0.6s ease-out;
}

.icon {
    font-size: 3rem;
    filter: drop-shadow(0 0 20px rgba(99, 102, 241, 0.5));
    animation: float 3s ease-in-out infinite;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-top: var(--spacing-xs);
    animation: fadeIn 0.8s ease-out 0.2s backwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

/* ===== MAIN ===== */
.main {
    padding: var(--spacing-xl) 0;
    min-height: 70vh;
}

/* ===== UPLOAD SECTION ===== */
.upload-section {
    animation: fadeIn 0.6s ease-out;
}

.upload-card {
    max-width: 700px;
    margin: 0 auto;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: var(--spacing-xl);
    text-align: center;
}

.upload-icon {
    margin-bottom: var(--spacing-md);
}

.upload-icon svg {
    stroke: var(--accent-primary);
    animation: bounce 2s infinite;
}

@keyframes bounce {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

.upload-card h2 {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.upload-description {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-lg);
}

/* Dropzone */
.dropzone {
    border: 3px dashed var(--border-color);
    border-radius: 16px;
    padding: var(--spacing-xl);
    margin: var(--spacing-lg) 0;
    cursor: pointer;
    transition: all var(--transition-normal);
    background: var(--bg-tertiary);
}

.dropzone:hover,
.dropzone.dragover {
    border-color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.05);
    transform: scale(1.02);
}

.dropzone-content svg {
    stroke: var(--text-muted);
    margin-bottom: var(--spacing-md);
}

.dropzone-text {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.browse-btn {
    color: var(--accent-primary);
    font-weight: 600;
    cursor: pointer;
    text-decoration: underline;
}

.dropzone-hint {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* Feature List */
.feature-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.feature-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm);
    background: var(--bg-tertiary);
    border-radius: 12px;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.feature-item svg {
    stroke: var(--success);
    flex-shrink: 0;
}

/* ===== PROCESSING SECTION ===== */
.processing-section {
    animation: fadeIn 0.4s ease-out;
}

.processing-card {
    max-width: 600px;
    margin: 0 auto;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: var(--spacing-xl);
    text-align: center;
}

.spinner {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    border: 4px solid var(--border-color);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.processing-card h2 {
    font-size: 1.8rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.progress-bar {
    width: 100%;
    height: 12px;
    background: var(--bg-tertiary);
    border-radius: 8px;
    overflow: hidden;
    margin: var(--spacing-lg) 0;
}

.progress-fill {
    height: 100%;
    background: var(--accent-gradient);
    width: 0%;
    transition: width 0.3s ease;
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.5);
}

.processing-detail {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* ===== RESULTS SECTION ===== */
.results-section {
    animation: fadeIn 0.6s ease-out;
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md) 0;
    border-bottom: 2px solid var(--border-color);
}

.results-header h2 {
    font-size: 1.8rem;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--success);
}

.results-header svg {
    stroke: var(--success);
}

.results-actions {
    display: flex;
    gap: var(--spacing-sm);
}

/* Results Grid */
.results-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.result-panel {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
}

.panel-header h3 {
    font-size: 1.2rem;
    color: var(--text-primary);
}

.icon-btn {
    width: 36px;
    height: 36px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-btn:hover {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: white;
}

/* Image Preview */
.image-preview-container {
    padding: var(--spacing-md);
    background: var(--bg-primary);
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.preview-image {
    max-width: 100%;
    max-height: 400px;
    border-radius: 8px;
    box-shadow: var(--shadow-md);
}

.image-info {
    padding: var(--spacing-md);
    display: flex;
    gap: var(--spacing-lg);
    background: var(--bg-tertiary);
}

.info-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.info-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Q&A Results Summary */
.qa-results {
    padding: var(--spacing-md);
}

.qa-summary {
    display: flex;
    gap: var(--spacing-lg);
}

.summary-item {
    flex: 1;
    text-align: center;
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: 12px;
}

.summary-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

.summary-label {
    display: block;
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

.no-results {
    color: var(--text-muted);
    text-align: center;
    padding: var(--spacing-lg);
}

/* Confidence Badge */
.confidence-badge {
    padding: 6px 16px;
    border-radius: 12px;
    font-size: 0.9rem;
    font-weight: 600;
}

.confidence-high {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success);
}

.confidence-medium {
    background: rgba(245, 158, 11, 0.2);
    color: var(--warning);
}

.confidence-low {
    background: rgba(239, 68, 68, 0.2);
    color: var(--danger);
}

/* View Tabs */
.view-tabs {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--border-color);
}

.view-tab {
    padding: var(--spacing-sm) var(--spacing-md);
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.view-tab:hover {
    color: var(--text-primary);
}

.view-tab.active {
    color: var(--accent-primary);
    border-bottom-color: var(--accent-primary);
}

/* View Panels */
.view-content {
    position: relative;
}

.view-panel {
    display: none;
    animation: fadeIn 0.3s ease-out;
}

.view-panel.active {
    display: block;
}

/* Q&A List */
.qa-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.qa-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: var(--spacing-md);
    transition: all var(--transition-fast);
}

.qa-card:hover {
    border-color: var(--accent-primary);
    transform: translateX(4px);
}

.qa-header {
    margin-bottom: var(--spacing-sm);
}

.qa-number {
    display: inline-block;
    padding: 4px 12px;
    background: var(--accent-gradient);
    color: white;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 600;
}

.qa-question {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.5;
}

.qa-answer {
    color: var(--text-secondary);
    line-height: 1.6;
    padding-left: var(--spacing-md);
    border-left: 3px solid var(--accent-primary);
}

/* Code Blocks */
.code-block {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
}

.code-block pre {
    padding: var(--spacing-md);
    overflow-x: auto;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--text-secondary);
}

/* Buttons */
.btn {
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.95rem;
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: 0 4px 16px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    border-color: var(--accent-primary);
    transform: translateY(-2px);
}

/* ===== FOOTER ===== */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-lg) 0;
    text-align: center;
    margin-top: var(--spacing-xl);
}

.footer p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.footer a {
    color: var(--accent-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer a:hover {
    color: var(--accent-secondary);
    text-decoration: underline;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .results-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .logo {
        font-size: 2rem;
    }

    .icon {
        font-size: 2.5rem;
    }

    .subtitle {
        font-size: 0.95rem;
    }

    .results-header {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .results-actions {
        width: 100%;
        flex-direction: column;
    }

    .results-actions .btn {
        width: 100%;
        justify-content: center;
    }

    .feature-list {
        grid-template-columns: 1fr;
    }
}

/* ===== SCROLLBAR STYLING ===== */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--accent-primary);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-secondary);
}

/* ===== INFO BOX ===== */
.info-box {
    max-width: 900px;
    margin: var(--spacing-lg) auto 0;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    border: 2px solid rgba(99, 102, 241, 0.3);
    border-radius: 16px;
    padding: var(--spacing-lg);
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
    animation: fadeIn 0.8s ease-out 0.3s backwards;
}

.info-icon {
    font-size: 3rem;
    flex-shrink: 0;
    filter: drop-shadow(0 0 10px rgba(99, 102, 241, 0.5));
}

.info-content h3 {
    font-size: 1.4rem;
    margin-bottom: var(--spacing-sm);
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.info-content p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-sm);
}

.btn-colab {
    background: linear-gradient(135deg, #F9AB00 0%, #F57C00 100%);
    color: white;
    box-shadow: 0 4px 16px rgba(245, 158, 11, 0.3);
    margin: var(--spacing-md) 0;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 12px;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 600;
    transition: all var(--transition-fast);
}

.btn-colab:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(245, 158, 11, 0.4);
}

.btn-colab svg {
    stroke: white;
    flex-shrink: 0;
}

.info-note {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-style: italic;
    margin-top: var(--spacing-xs);
}

@media (max-width: 768px) {
    .info-box {
        flex-direction: column;
        text-align: center;
    }

    .info-icon {
        margin: 0 auto;
    }
}