/* Common styles and variables */

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

:root {
    --primary-color: #667eea;
    --primary-dark: #5568d3;
    --secondary-color: #764ba2;
    --success-color: #10b981;
    --error-color: #ef4444;
    --warning-color: #f59e0b;
    --card-bg: #ffffff;
    --text-color: #1f2937;
    --text-muted: #6b7280;
    --border-color: #e5e7eb;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.2);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    background-attachment: fixed;
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
}

/* Add padding for pages with navbar */
body:has(.navbar) {
    padding-top: 70px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

/* Main content wrapper for pages with navbar */
.main-content {
    padding: 32px;
    max-width: 1200px;
    margin: 0 auto;
}

.page-header {
    text-align: center;
    margin-bottom: 2rem;
    padding: 2rem 0;
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    color: white;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.page-header p {
    color: rgba(255, 255, 255, 0.95);
    font-size: 1.1rem;
}


.card {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-lg);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.25);
}

.card h2 {
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
    color: var(--text-color);
    font-weight: 600;
}

.card h3 {
    margin-bottom: 1rem;
    font-size: 1.2rem;
    color: var(--text-color);
    font-weight: 600;
}

/* Card header with icon */
.card-header {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid #f3f4f6;
}

.header-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
}

.card-header h2 {
    margin: 0 0 0.25rem 0;
    font-size: 1.25rem;
}

.card-subtitle {
    margin: 0;
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 400;
}


/* Upload section */
.upload-area {
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    padding: 3rem;
    text-align: center;
    cursor: pointer;
    background: #fafafa;
}

.upload-area:hover,
.upload-area.dragover {
    border-color: var(--primary-color);
}

.upload-prompt {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.upload-prompt svg {
    color: var(--primary-color);
}

.upload-prompt p {
    color: var(--text-muted);
    margin: 0;
}

.upload-hint {
    font-size: 0.875rem !important;
    color: var(--primary-color) !important;
    background: rgba(102, 126, 234, 0.1);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-weight: 500;
}

.image-preview {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.image-preview img {
    max-width: 100%;
    max-height: 300px;
    border-radius: 8px;
}

.remove-btn {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: none;
    background: var(--error-color);
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
}

.upload-status {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
    font-weight: 600;
    display: none;
}

.upload-status.processing {
    display: block;
    background: #fef3c7;
    color: #92400e;
}

.upload-status.success {
    display: block;
    background: #d1fae5;
    color: #065f46;
}

.upload-status.error {
    display: block;
    background: #fee2e2;
    color: #991b1b;
}


/* Loading spinner */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

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


/* Charts */
.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.chart-container {
    margin-bottom: 3rem;
}

.chart-container canvas {
    max-height: 400px;
}

@media (max-width: 1100px) {
    .charts-grid {
        grid-template-columns: 1fr;
    }
}

/* Selectors */
.selector {
    margin-bottom: 1.5rem;
}

.selector label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-color);
}

.selector select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    background-color: white;
    cursor: pointer;
}

.selector select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

/* Empty state */
.empty-message {
    text-align: center;
    color: var(--text-muted);
    padding: 2rem;
    font-style: italic;
}

/* Responsive */
@media (max-width: 768px) {
    body:has(.navbar) {
        padding-top: 80px;
    }

    .container {
        padding: 1rem;
    }

    .main-content {
        padding: 1rem;
    }

    .page-header {
        padding: 1rem 0;
        margin-bottom: 1.5rem;
    }

    .page-header h1 {
        font-size: 1.75rem;
    }

    .page-header p {
        font-size: 0.95rem;
    }

    .card {
        padding: 1.5rem;
    }

    .upload-area {
        padding: 2rem;
    }
}