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

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #64748b;
    --success: #10b981;
    --success-dark: #059669;
    --error: #ef4444;
    --warning: #f59e0b;
    --bg: #f8fafc;
    --bg-card: #ffffff;
    --text: #1e293b;
    --text-light: #64748b;
    --text-lighter: #94a3b8;
    --border: #e2e8f0;
    --border-light: #f1f5f9;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --radius: 12px;
    --radius-sm: 8px;
    --transition: all 0.2s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
    color: var(--text);
    line-height: 1.6;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    background: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    padding: 40px;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

header {
    margin-bottom: 40px;
    padding-bottom: 30px;
    border-bottom: 2px solid var(--border-light);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 20px;
}

.header-title h1 {
    font-size: 2.5em;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
    letter-spacing: -0.5px;
}

.header-subtitle {
    color: var(--text-light);
    font-size: 1.05em;
    margin: 0;
}

.header-actions {
    display: flex;
    gap: 12px;
    align-items: center;
}

.form-section {
    margin-bottom: 40px;
    padding: 30px;
    background: var(--bg);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    transition: var(--transition);
}

.form-section:hover {
    box-shadow: var(--shadow-md);
}

.section-title {
    font-size: 1.4em;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 24px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--border);
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-group label {
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text);
    font-size: 0.95em;
    display: flex;
    align-items: center;
    gap: 6px;
}

.form-group input,
.form-group select {
    padding: 14px 16px;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 1em;
    transition: var(--transition);
    background: var(--bg-card);
    color: var(--text);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-group input::placeholder {
    color: var(--text-lighter);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    padding: 12px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.checkbox-label:hover {
    background: var(--border-light);
}

.checkbox-label input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--primary);
}

.checkbox-label span {
    user-select: none;
    font-weight: 500;
}

.form-hint {
    display: block;
    margin-top: 8px;
    color: var(--text-light);
    font-size: 0.9em;
    font-style: italic;
}

.previous-year-filters {
    margin-top: 20px;
    padding: 20px;
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    border: 1px dashed var(--border);
}

.form-actions {
    display: flex;
    gap: 15px;
    justify-content: center;
    margin-top: 40px;
    padding-top: 30px;
    border-top: 2px solid var(--border-light);
}

.btn {
    padding: 14px 28px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 1em;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    box-shadow: var(--shadow);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn:active {
    transform: translateY(0);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
}

.btn-primary:hover:not(:disabled) {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
}

.btn-secondary {
    background: var(--secondary);
    color: white;
}

.btn-secondary:hover {
    background: #475569;
}

.btn-success {
    background: var(--success);
    color: white;
}

.btn-success:hover {
    background: var(--success-dark);
}

.btn-large {
    padding: 16px 36px;
    font-size: 1.1em;
}

.btn-icon {
    font-size: 1.2em;
}

.stats-section {
    margin: 40px 0;
    padding: 30px;
    background: var(--bg);
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.stats-section h2 {
    margin-bottom: 24px;
    color: var(--text);
    font-weight: 600;
    font-size: 1.4em;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.stat-card {
    background: var(--bg-card);
    padding: 24px;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--border);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.stat-label {
    font-size: 0.9em;
    color: var(--text-light);
    margin-bottom: 12px;
    font-weight: 500;
}

.stat-value {
    font-size: 2em;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.no-stats {
    text-align: center;
    padding: 40px;
    color: var(--text-light);
    font-size: 1.1em;
}

.export-message {
    margin: 30px 0;
    padding: 24px;
    border-radius: var(--radius);
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.export-success {
    background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
    border: 2px solid var(--success);
    color: #065f46;
}

.export-error {
    background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%);
    border: 2px solid var(--error);
    color: #991b1b;
}

.export-message .message-content h3 {
    margin-bottom: 12px;
    font-weight: 600;
    font-size: 1.3em;
}

.export-message .message-content p {
    margin-bottom: 16px;
    line-height: 1.6;
}

.message-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    backdrop-filter: blur(4px);
}

.loading-overlay p {
    color: white;
    margin-top: 20px;
    font-size: 1.1em;
    font-weight: 500;
}

.spinner {
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid white;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
}

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

.htmx-indicator {
    display: none;
}

.htmx-indicator.htmx-request {
    display: block;
}

@media (max-width: 768px) {
    body {
        padding: 10px;
    }

    .container {
        padding: 20px;
    }

    .header-title h1 {
        font-size: 2em;
    }

    .form-section {
        padding: 20px;
    }

    .form-grid {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .form-actions {
        flex-direction: column;
    }

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