/*
   COMMON STYLES - Tracking v2.0
   Layout compartido: navbar, sidebar, main, tablas, botones, alertas.
   Importar DESPUÉS de variables.css
 */

/* RESET */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

/* BODY */
body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

a { color: var(--green-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* NAVBAR */
.navbar {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 0 1.5rem;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    font-size: 1rem;
    color: var(--green-primary);
    text-decoration: none;
}
.nav-brand:hover { text-decoration: none; }

.nav-links {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    list-style: none;
}

.nav-links a {
    padding: 0.4rem 0.75rem;
    border-radius: var(--border-radius-md);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    transition: all 0.2s;
    text-decoration: none;
}
.nav-links a:hover { background: var(--hover-color); color: var(--text-primary); }
.nav-links a.active { background: var(--green-bg-soft); color: var(--green-primary); font-weight: 500; }

.nav-right {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.nav-phone {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.nav-status {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}
.nav-status .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--status-offline);
    transition: background 0.3s;
}
.nav-status .dot.connected { background: var(--status-moving); }
.nav-status .dot.disconnected { background: var(--status-error); }

/* BOTONES */
.btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--border-radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    font-family: var(--font-primary);
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}
.btn:disabled { opacity: 0.6; cursor: not-allowed; }

.btn-primary { background: var(--green-primary); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--green-hover); }

.btn-secondary {
    background: var(--bg-primary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}
.btn-secondary:hover:not(:disabled) { background: var(--hover-color); }

.btn-danger {
    background: transparent;
    color: var(--status-error);
    border: 1px solid var(--status-error);
}
.btn-danger:hover:not(:disabled) { background: var(--status-error); color: #fff; }

.btn-sm { padding: 4px 10px; font-size: var(--font-size-xs); }

.btn-theme {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    background: var(--bg-primary);
    cursor: pointer;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* MAIN CONTENT */
.main-content {
    max-width: 1400px;
    margin: 1.5rem auto;
    padding: 0 1.5rem;
}

.page-header {
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.75rem;
}
.page-header h1 { font-size: var(--font-size-2xl); font-weight: 600; }
.page-header p { font-size: var(--font-size-sm); color: var(--text-secondary); margin-top: 0.15rem; }

/* CARDS */
.card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-xl);
    padding: 1.25rem;
    transition: box-shadow 0.2s;
}
.card:hover { box-shadow: var(--card-shadow); }

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stat-card { text-align: left; }
.stat-card .stat-label {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.stat-card .stat-value {
    font-size: 1.75rem;
    font-weight: 600;
    margin-top: 0.25rem;
    color: var(--green-primary);
}

/* TABLAS */
.table-container {
    overflow-x: auto;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
}
.data-table thead { background: var(--table-header); }
.data-table th {
    padding: 0.65rem 0.75rem;
    text-align: left;
    font-weight: 600;
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}
.data-table td {
    padding: 0.6rem 0.75rem;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}
.data-table tbody tr { transition: background 0.15s; }
.data-table tbody tr:hover { background: var(--hover-color); }
.data-table tbody tr:last-child td { border-bottom: none; }

/* BADGES */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 2px 8px;
    border-radius: var(--border-radius-full);
    font-size: var(--font-size-xs);
    font-weight: 500;
    white-space: nowrap;
}
.badge-success { background: rgba(22,163,74,0.12); color: var(--status-success); }
.badge-warning { background: rgba(253,126,20,0.12); color: var(--status-warning); }
.badge-error   { background: rgba(220,53,69,0.12); color: var(--status-error); }
.badge-info    { background: rgba(0,166,81,0.1); color: var(--green-primary); }
.badge-muted   { background: rgba(148,163,184,0.15); color: var(--text-secondary); }

/* ALERTAS */
.alert {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius-md);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    animation: slideDown 0.3s ease;
}
.alert-error   { background: rgba(220,38,38,0.1); color: var(--status-error); border: 1px solid rgba(220,38,38,0.2); }
.alert-success { background: rgba(22,163,74,0.1); color: var(--status-success); border: 1px solid rgba(22,163,74,0.2); }
.alert-info    { background: var(--green-bg-soft); color: var(--green-darker); border: 1px solid rgba(0,166,81,0.2); }
.alert-warning { background: rgba(253,126,20,0.1); color: var(--status-warning); border: 1px solid rgba(253,126,20,0.2); }

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

/* FORMULARIOS */
.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-lg);
}
.form-label {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-primary);
}
.form-input, .form-select {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--input-border);
    border-radius: var(--border-radius-md);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: var(--font-size-sm);
    font-family: var(--font-primary);
    transition: border-color 0.2s;
    outline: none;
}
.form-input:focus, .form-select:focus {
    border-color: var(--input-focus);
    box-shadow: 0 0 0 3px rgba(147, 197, 253, 0.1);
}

/* MODAL */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.45);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
}
.modal-overlay.active { opacity: 1; pointer-events: auto; }

.modal {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-xl);
    padding: 1.5rem;
    width: 95%;
    max-width: 600px;
    max-height: 85vh;
    overflow-y: auto;
    transform: translateY(20px);
    transition: transform 0.2s;
}
.modal-overlay.active .modal { transform: translateY(0); }

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.25rem;
}
.modal-header h2 { font-size: var(--font-size-lg); font-weight: 600; }
.modal-close {
    width: 32px;
    height: 32px;
    border: none;
    background: var(--hover-color);
    border-radius: var(--border-radius-md);
    cursor: pointer;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
}
.modal-close:hover { background: var(--border-color); }

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
    margin-top: 1.25rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

/* SPINNER */
.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}
.spinner-dark {
    border-color: rgba(0,0,0,0.1);
    border-top-color: var(--green-primary);
}
@keyframes spin { to { transform: rotate(360deg); } }

/* LOADING SKELETON */
.skeleton {
    background: linear-gradient(90deg, var(--hover-color) 25%, var(--border-color) 50%, var(--hover-color) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--border-radius-sm);
}
@keyframes shimmer { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

/* HELPERS */
.hidden { display: none !important; }
.text-muted { color: var(--text-secondary); }
.text-success { color: var(--status-success); }
.text-error { color: var(--status-error); }
.text-warning { color: var(--status-warning); }
.text-center { text-align: center; }
.text-right { text-align: right; }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.mt-1 { margin-top: var(--spacing-lg); }
.mb-1 { margin-bottom: var(--spacing-lg); }

/* SCROLLBAR */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--scrollbar-track); }
::-webkit-scrollbar-thumb { background: var(--scrollbar-thumb); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--scrollbar-hover); }

/* RESPONSIVE */
@media (max-width: 768px) {
    .navbar { padding: 0 1rem; }
    .nav-links { display: none; }
    .main-content { padding: 0 1rem; margin: 1rem auto; }
    .page-header { flex-direction: column; align-items: flex-start; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr; }
}