/* ============================================================================
   🔔 NOTIFICATION CENTER STYLES
   ============================================================================ */

/* ============================================================================
   SUB-TAB NAVIGATION
   ============================================================================ */

.subtab-btn {
    padding: 1rem 1.5rem;
    border-bottom: 3px solid transparent;
    font-weight: 500;
    color: #6B7280;
    transition: all 0.2s;
    cursor: pointer;
    background: none;
    border-top: none;
    border-left: none;
    border-right: none;
}

.subtab-btn:hover {
    color: #111827;
    border-bottom-color: #D1D5DB;
}

.subtab-btn.active {
    color: #2563EB;
    border-bottom-color: #2563EB;
}

.subtab-content {
    animation: fadeIn 0.3s ease-in;
}

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

/* ============================================================================
   DYNAMIC NOTIFICATION CENTER TAB (Global - applies to index.html nav)
   ============================================================================
   This styles the main "Notification Center" tab in the admin navigation
   Changes color based on alert status
   ============================================================================ */

/* Default State: GREEN (All systems healthy) */
.admin-nav a[href="/admin-notification-center.html"],
.admin-nav a[href="admin-notification-center.html"] {
    background: linear-gradient(135deg, #10B981 0%, #059669 100%); /* Green */
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 600;
    position: relative;
    transition: all 0.3s ease;
    display: inline-block;
}

.admin-nav a[href="/admin-notification-center.html"]:hover,
.admin-nav a[href="admin-notification-center.html"]:hover {
    background: linear-gradient(135deg, #059669 0%, #047857 100%);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.4);
}

/* WARNING State: YELLOW (Minor issues) */
.admin-nav a[href="/admin-notification-center.html"].status-warning,
.admin-nav a[href="admin-notification-center.html"].status-warning {
    background: linear-gradient(135deg, #FBBF24 0%, #F59E0B 100%); /* Yellow */
    animation: pulse-warning 2s ease-in-out infinite;
}

.admin-nav a[href="/admin-notification-center.html"].status-warning:hover,
.admin-nav a[href="admin-notification-center.html"].status-warning:hover {
    background: linear-gradient(135deg, #F59E0B 0%, #D97706 100%);
    box-shadow: 0 4px 12px rgba(251, 191, 36, 0.4);
}

/* CRITICAL State: RED (PULSING!) */
.admin-nav a[href="/admin-notification-center.html"].status-critical,
.admin-nav a[href="admin-notification-center.html"].status-critical {
    background: linear-gradient(135deg, #EF4444 0%, #DC2626 100%); /* Red */
    animation: pulse-critical 1s ease-in-out infinite;
}

.admin-nav a[href="/admin-notification-center.html"].status-critical:hover,
.admin-nav a[href="admin-notification-center.html"].status-critical:hover {
    background: linear-gradient(135deg, #DC2626 0%, #B91C1C 100%);
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.6);
}

/* OFFLINE State: GRAY */
.admin-nav a[href="/admin-notification-center.html"].status-offline,
.admin-nav a[href="admin-notification-center.html"].status-offline {
    background: linear-gradient(135deg, #6B7280 0%, #4B5563 100%); /* Gray */
    opacity: 0.7;
}

/* ============================================================================
   ALERT BADGE (Shows unacknowledged count)
   ============================================================================ */

.admin-nav a[href="/admin-notification-center.html"]::after,
.admin-nav a[href="admin-notification-center.html"]::after {
    content: attr(data-alert-count);
    display: none; /* Hidden by default */
    position: absolute;
    top: -8px;
    right: -8px;
    background: #DC2626;
    color: white;
    font-size: 11px;
    font-weight: bold;
    padding: 2px 6px;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(220, 38, 38, 0.5);
    animation: badge-pulse 2s ease-in-out infinite;
}

/* Show badge when there are alerts */
.admin-nav a[href="/admin-notification-center.html"][data-alert-count]:not([data-alert-count="0"])::after,
.admin-nav a[href="admin-notification-center.html"][data-alert-count]:not([data-alert-count="0"])::after {
    display: block;
}

/* ============================================================================
   ANIMATIONS
   ============================================================================ */

@keyframes pulse-warning {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(251, 191, 36, 0.7);
    }
    50% {
        box-shadow: 0 0 0 10px rgba(251, 191, 36, 0);
    }
}

@keyframes pulse-critical {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.9);
        transform: scale(1);
    }
    50% {
        box-shadow: 0 0 0 15px rgba(239, 68, 68, 0);
        transform: scale(1.05);
    }
}

@keyframes badge-pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.2);
    }
}

/* ============================================================================
   RESPONSIVE DESIGN
   ============================================================================ */

@media (max-width: 768px) {
    .subtab-btn {
        padding: 0.75rem 1rem;
        font-size: 0.875rem;
    }
}

/* ============================================================================
   TOAST NOTIFICATIONS
   ============================================================================ */

@keyframes slideIn {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOut {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(400px);
        opacity: 0;
    }
}