/* ==========================================================================
   Common Styles - Shared across all pages
   ========================================================================== */

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: #f5f7fa;
    color: #2c3e50;
    line-height: 1.6;
}

/* ---------- Utility classes ---------- */
.hidden {
    display: none !important;
}

.overflow-x-auto {
    overflow-x: auto;
}

.text-muted {
    color: #64748b;
}

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

/* ---------- Common components ---------- */

/* Loading state */
.loading {
    text-align: center;
    padding: 40px;
    color: #64748b;
}

/* Error state */
.error {
    background: #fee2e2;
    color: #dc2626;
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
}

/* Spinner animation */
.spinner {
    border: 4px solid #e2e8f0;
    border-top: 4px solid #3b82f6;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 20px auto;
}

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

/* ---------- Form elements ---------- */
label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #334155;
}

input, select {
    width: 100%;
    padding: 12px;
    border: 2px solid #cbd5e1;
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.3s;
}

input:focus, select:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* ---------- Buttons ---------- */
button {
    padding: 12px 24px;
    background: #3b82f6;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

button:hover {
    background: #2563eb;
    transform: translateY(-1px);
}

button:disabled {
    background: #94a3b8;
    cursor: not-allowed;
    transform: none;
}

.btn-danger {
    background: #dc2626;
}

.btn-danger:hover {
    background: #b91c1c;
}

.btn-secondary {
    background: #64748b;
}

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

/* ---------- Data footer ---------- */
.data-footer {
    padding: 25px 30px;
    background: #f8fafc;
    border-top: 1px solid #e2e8f0;
    text-align: center;
    font-size: 13px;
    color: #64748b;
    line-height: 1.8;
}

.data-footer-title {
    font-weight: 700;
    color: #334155;
    font-size: 14px;
    margin-bottom: 4px;
}

.data-footer-sources {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px;
    margin: 10px 0;
}

.data-footer-sources a {
    color: #1e40af;
    text-decoration: none;
    font-weight: 500;
    padding: 4px 12px;
    border: 1px solid #cbd5e1;
    border-radius: 4px;
    transition: all 0.2s;
}

.data-footer-sources a:hover {
    background: #3b82f6;
    color: white;
    border-color: #3b82f6;
}

.data-footer a {
    color: #1e40af;
    text-decoration: none;
    font-weight: 500;
}

.data-footer a:hover {
    text-decoration: underline;
}

/* ---------- Site footer ---------- */
.site-footer {
    background: #1e293b;
    color: #94a3b8;
    font-size: 13px;
    line-height: 1.7;
    padding: 30px 24px 20px;
    margin-top: 0;
}

.site-footer-inner {
    max-width: 960px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

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

.site-footer-brand {
    font-weight: 600;
    color: #e2e8f0;
    font-size: 14px;
}

.site-footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 20px;
}

.site-footer-links a {
    color: #94a3b8;
    text-decoration: none;
    transition: color 0.2s;
}

.site-footer-links a:hover {
    color: #e2e8f0;
}

.site-footer-divider {
    border: none;
    border-top: 1px solid #334155;
}

.site-footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 12px;
    color: #64748b;
}

.site-footer-disclaimer {
    max-width: 640px;
}

@media (max-width: 640px) {
    .site-footer-top {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .site-footer-links {
        justify-content: center;
    }

    .site-footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}