/* ============================================================
   TC Alertas USD/PEN - Stylesheet
   ============================================================ */

:root {
    --primary: #4361ee;
    --primary-dark: #3a56d4;
    --danger: #ef233c;
    --danger-dark: #d90429;
    --success: #06d6a0;
    --success-dark: #05b88a;
    --warning: #ffd166;
    --bg: #f0f2f5;
    --card: #ffffff;
    --text: #1a1a2e;
    --text-muted: #6c757d;
    --border: #dee2e6;
    --radius: 12px;
    --shadow: 0 2px 12px rgba(0,0,0,0.08);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

/* Login Page */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 20px;
}

.login-card {
    background: var(--card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 40px;
    width: 100%;
    max-width: 400px;
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header h1 {
    font-size: 1.8rem;
    color: var(--primary);
}

.login-header p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Layout */
.wrapper {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 240px;
    background: #1a1a2e;
    color: white;
    padding: 20px 0;
    flex-shrink: 0;
}

.sidebar-brand {
    padding: 10px 20px 30px;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary);
    border-bottom: 1px solid rgba(255,255,255,0.1);
    margin-bottom: 10px;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.2s;
}

.sidebar-nav a:hover,
.sidebar-nav a.active {
    background: rgba(255,255,255,0.1);
    color: white;
}

.sidebar-nav .nav-icon {
    width: 20px;
    text-align: center;
}

.main-content {
    flex: 1;
    padding: 30px;
    overflow-x: auto;
}

.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.top-bar h2 {
    font-size: 1.5rem;
    color: var(--text);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 15px;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Cards */
.card {
    background: var(--card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 24px;
    margin-bottom: 20px;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border);
}

.card-header h3 {
    font-size: 1.1rem;
    color: var(--text);
}

/* Rate Cards */
.rates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 25px;
}

.rate-card {
    background: var(--card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 24px;
    border-left: 4px solid var(--primary);
}

.rate-card h4 {
    color: var(--text-muted);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 12px;
}

.rate-values {
    display: flex;
    gap: 30px;
}

.rate-item label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 2px;
}

.rate-item .value {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text);
}

.rate-card .timestamp {
    margin-top: 10px;
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Alert Status */
.alert-status {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 16px 20px;
    border-radius: var(--radius);
    margin-bottom: 20px;
    font-weight: 600;
}

.alert-status.active {
    background: #fee2e2;
    color: var(--danger);
    border: 1px solid #fecaca;
}

.alert-status.inactive {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    display: inline-block;
}

.status-dot.active {
    background: var(--danger);
    animation: pulse 1.5s ease-in-out infinite;
}

.status-dot.inactive {
    background: var(--success);
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

/* Forms */
.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    font-weight: 600;
    font-size: 0.85rem;
    margin-bottom: 6px;
    color: var(--text);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 0.95rem;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.15);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.form-help {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 4px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

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

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

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

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

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

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

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: white;
}

.btn-sm {
    padding: 6px 14px;
    font-size: 0.8rem;
}

.btn-full {
    width: 100%;
}

.btn-stop {
    background: var(--danger);
    color: white;
    font-size: 1rem;
    padding: 14px 30px;
    border-radius: 10px;
    animation: pulse-btn 2s ease-in-out infinite;
}

@keyframes pulse-btn {
    0%, 100% { box-shadow: 0 0 0 0 rgba(239,35,60,0.4); }
    50% { box-shadow: 0 0 0 12px rgba(239,35,60,0); }
}

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

/* Alerts/Notifications */
.alert {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 16px;
    font-size: 0.9rem;
}

.alert-error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.alert-warning {
    background: #fef3c7;
    color: #92400e;
    border: 1px solid #fde68a;
}

.alert-info {
    background: #dbeafe;
    color: #1e40af;
    border: 1px solid #bfdbfe;
}

/* Tables */
.table-wrapper {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
}

table th,
table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

table th {
    background: #f8f9fa;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    font-weight: 600;
}

table td {
    font-size: 0.9rem;
}

table tr:hover {
    background: #f8f9fa;
}

.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-active {
    background: #fee2e2;
    color: var(--danger);
}

.badge-inactive {
    background: #d1fae5;
    color: #065f46;
}

.badge-admin {
    background: #dbeafe;
    color: #1e40af;
}

/* Responsive */
@media (max-width: 768px) {
    .wrapper {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        padding: 10px 0;
    }

    .sidebar-nav {
        display: flex;
        overflow-x: auto;
    }

    .sidebar-nav a {
        white-space: nowrap;
        padding: 10px 15px;
    }

    .main-content {
        padding: 15px;
    }

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

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

    .top-bar {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
}

/* Empty state */
.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
}

.empty-state .icon {
    font-size: 3rem;
    margin-bottom: 10px;
}

/* Action bar */
.action-bar {
    display: flex;
    justify-content: center;
    margin: 20px 0;
}