/**
 * Notifications Module Styles
 * Consolidated styles for toast, dropdown, and notification center
 */

/* ============================================================
   CSS VARIABLES (Local overrides)
   ============================================================ */
:root {
    --notification-success: var(--color-success, #28a745);
    --notification-error: var(--color-error, #dc3545);
    --notification-warning: var(--color-warning, #ffc107);
    --notification-info: var(--color-primary, #0d6efd);
}

/* ============================================================
   TOAST NOTIFICATIONS
   ============================================================ */
.notification-toast-container {
    position: fixed;
    top: var(--spacing-lg, 24px);
    right: var(--spacing-lg, 24px);
    z-index: var(--z-toast, 10100);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm, 8px);
    max-width: 400px;
    pointer-events: none;
}

.notification-toast {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm, 12px);
    padding: var(--spacing-md, 16px);
    background: var(--color-surface, #ffffff);
    border-radius: var(--radius-md, 8px);
    box-shadow: var(--shadow-lg, 0 10px 40px rgba(0, 0, 0, 0.15));
    border-left: 4px solid var(--notification-info);
    pointer-events: auto;
    opacity: 0;
    transform: translateX(100%);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.notification-toast--visible {
    opacity: 1;
    transform: translateX(0);
}

.notification-toast--success {
    border-left-color: var(--notification-success);
}

.notification-toast--error {
    border-left-color: var(--notification-error);
}

.notification-toast--warning {
    border-left-color: var(--notification-warning);
}

.notification-toast__icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
}

.notification-toast--success .notification-toast__icon {
    color: var(--notification-success);
}

.notification-toast--error .notification-toast__icon {
    color: var(--notification-error);
}

.notification-toast--warning .notification-toast__icon {
    color: var(--notification-warning);
}

.notification-toast__message {
    flex: 1;
    font-size: var(--font-size-sm, 14px);
    line-height: 1.5;
    color: var(--color-text, #212529);
}

.notification-toast__close {
    flex-shrink: 0;
    background: none;
    border: none;
    font-size: 20px;
    color: var(--color-text-muted, #6c757d);
    cursor: pointer;
    padding: 0;
    line-height: 1;
    opacity: 0.6;
    transition: opacity 0.2s;
}

.notification-toast__close:hover {
    opacity: 1;
}

/* Toast content wrapper */
.notification-toast__content {
    flex: 1;
    min-width: 0;
}

/* Progress bar for auto-dismiss */
.notification-toast__progress {
    height: 3px;
    background: rgba(0, 0, 0, 0.1);
    border-radius: 2px;
    margin-top: 8px;
    overflow: hidden;
}

.notification-toast__progress-bar {
    height: 100%;
    width: 100%;
    background: currentColor;
    opacity: 0.4;
    transform-origin: left;
    animation: toast-progress linear forwards;
}

@keyframes toast-progress {
    from {
        transform: scaleX(1);
    }
    to {
        transform: scaleX(0);
    }
}

/* Paused state */
.notification-toast--paused {
    transform: translateX(0) scale(1.02);
    box-shadow: var(--shadow-xl, 0 15px 50px rgba(0, 0, 0, 0.2));
}

.notification-toast--paused .notification-toast__progress-bar {
    animation-play-state: paused;
}

/* Dismissing animation */
.notification-toast--dismissing {
    opacity: 0;
    transform: translateX(100%);
    pointer-events: none;
}

/* Success progress bar color */
.notification-toast--success .notification-toast__progress-bar {
    background: var(--notification-success);
}

/* Error progress bar color */
.notification-toast--error .notification-toast__progress-bar {
    background: var(--notification-error);
}

/* Warning progress bar color */
.notification-toast--warning .notification-toast__progress-bar {
    background: var(--notification-warning);
}

/* Info progress bar color */
.notification-toast--info .notification-toast__progress-bar {
    background: var(--notification-info);
}

/* ============================================================
   NOTIFICATION DROPDOWN PANEL (Header Bell)
   ============================================================ */
.notifications-dropdown-panel {
    display: none;
}

.notifications-dropdown {
    background: var(--color-surface, #ffffff);
    border-radius: var(--radius-lg, 12px);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    width: 400px;
    max-height: 600px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.notifications-dropdown__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg, 20px);
    border-bottom: 2px solid var(--color-border, #e9ecef);
    background: linear-gradient(135deg, #3498db 0%, #2980b9 100%);
}

.notifications-dropdown__header h3 {
    margin: 0;
    font-size: var(--font-size-lg, 1.2rem);
    font-weight: var(--font-weight-semibold, 600);
    color: #ffffff;
}

.notifications-dropdown__header .btn {
    background: #ffffff;
    color: #3498db;
    border: none;
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 600;
}

.notifications-dropdown__header .btn:hover {
    background: #f0f0f0;
}

.notifications-dropdown__list {
    flex: 1;
    overflow-y: auto;
    max-height: 500px;
}

.notifications-dropdown__footer {
    padding: 15px;
    border-top: 2px solid var(--color-border, #e9ecef);
    text-align: center;
    background: var(--color-background, #f8f9fa);
}

.notifications-dropdown__footer a {
    color: #3498db;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
}

.notifications-dropdown__footer a:hover {
    text-decoration: underline;
}

#notifications-list {
    max-height: 400px;
    overflow-y: auto;
}

.notifications-empty {
    padding: var(--spacing-xl, 32px);
    text-align: center;
    color: var(--color-text-muted, #6c757d);
}

.notifications-empty__icon {
    font-size: 48px;
    display: block;
    margin-bottom: var(--spacing-sm, 8px);
    opacity: 0.5;
}

/* ============================================================
   NOTIFICATION ITEM (Dropdown)
   ============================================================ */
.notification-item {
    display: flex;
    gap: var(--spacing-sm, 12px);
    padding: var(--spacing-md, 16px);
    border-bottom: 1px solid var(--color-border-light, #f1f3f4);
    cursor: pointer;
    transition: background-color 0.2s;
}

.notification-item:hover {
    background-color: var(--color-background, #f8f9fa);
}

.notification-item:last-child {
    border-bottom: none;
}

.notification-item--unread {
    background-color: rgba(13, 110, 253, 0.05);
}

.notification-item--unread:hover {
    background-color: rgba(13, 110, 253, 0.1);
}

.notification-item__icon {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border-radius: 0;
    font-size: 20px;
}

.notification-item__content {
    flex: 1;
    min-width: 0;
}

.notification-item__title {
    margin: 0 0 4px 0;
    font-size: var(--font-size-sm, 14px);
    font-weight: var(--font-weight-medium, 500);
    color: var(--color-text, #212529);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.notification-item__message {
    margin: 0;
    font-size: var(--font-size-xs, 13px);
    color: var(--color-text-muted, #6c757d);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.notification-item__time {
    display: block;
    margin-top: 4px;
    font-size: var(--font-size-xs, 12px);
    color: var(--color-text-light, #adb5bd);
}

/* ============================================================
   NOTIFICATION BADGE
   ============================================================ */
.notification-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    background: var(--notification-error);
    color: #ffffff;
    font-size: 0.75rem; /* 12px - acceptable for badges */
    font-weight: var(--font-weight-bold, 700);
    line-height: 18px;
    text-align: center;
    border-radius: var(--radius-full, 50%);
    border: 2px solid var(--color-surface, #ffffff);
}

.notification-badge.hidden {
    display: none;
}

/* ============================================================
   NOTIFICATION CENTER (Full Page)
   ============================================================ */
.notification-center {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-lg, 24px);
}

.notification-center__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg, 24px);
}

.notification-center__header h2 {
    margin: 0;
    font-size: var(--font-size-xl, 24px);
    font-weight: var(--font-weight-semibold, 600);
}

.notification-center__filters {
    display: flex;
    gap: var(--spacing-sm, 8px);
    margin-bottom: var(--spacing-lg, 24px);
    flex-wrap: wrap;
}

.filter-btn {
    padding: var(--spacing-xs, 8px) var(--spacing-md, 16px);
    background: var(--color-surface, #ffffff);
    border: 1px solid var(--color-border, #e9ecef);
    border-radius: var(--radius-full, 20px);
    font-size: var(--font-size-sm, 14px);
    color: var(--color-text-muted, #6c757d);
    cursor: pointer;
    transition: all 0.2s;
}

.filter-btn:hover {
    border-color: var(--color-primary, #0d6efd);
    color: var(--color-primary, #0d6efd);
}

.filter-btn.active {
    background: var(--color-primary, #0d6efd);
    border-color: var(--color-primary, #0d6efd);
    color: #ffffff;
}

.notification-center__list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm, 8px);
}

.notification-center__empty {
    text-align: center;
    padding: var(--spacing-2xl, 48px);
    color: var(--color-text-muted, #6c757d);
}

.notification-center__empty .empty-icon {
    font-size: 64px;
    display: block;
    margin-bottom: var(--spacing-md, 16px);
    opacity: 0.5;
}

/* ============================================================
   NOTIFICATION CENTER ITEM
   ============================================================ */
.notification-center-item {
    display: flex;
    gap: var(--spacing-md, 16px);
    padding: var(--spacing-md, 16px);
    background: var(--color-surface, #ffffff);
    border: 1px solid var(--color-border, #e9ecef);
    border-radius: var(--radius-md, 8px);
    cursor: pointer;
    transition: all 0.2s;
}

.notification-center-item:hover {
    border-color: var(--color-primary, #0d6efd);
    box-shadow: var(--shadow-sm, 0 2px 8px rgba(0, 0, 0, 0.08));
}

.notification-center-item--unread {
    background: rgba(13, 110, 253, 0.03);
    border-left: 3px solid var(--color-primary, #0d6efd);
}

.notification-center-item__icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-background, #f8f9fa);
    border-radius: var(--radius-md, 8px);
    font-size: 24px;
}

.notification-center-item__content {
    flex: 1;
    min-width: 0;
}

.notification-center-item__content h4 {
    margin: 0 0 4px 0;
    font-size: var(--font-size-md, 16px);
    font-weight: var(--font-weight-medium, 500);
}

.notification-center-item__content p {
    margin: 0;
    font-size: var(--font-size-sm, 14px);
    color: var(--color-text-muted, #6c757d);
}

.notification-center-item__time {
    display: block;
    margin-top: var(--spacing-xs, 8px);
    font-size: var(--font-size-xs, 12px);
    color: var(--color-text-light, #adb5bd);
}

.notification-center-item__actions {
    display: flex;
    gap: var(--spacing-xs, 8px);
    align-items: flex-start;
}

.notification-center-item__actions button {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-background, #f8f9fa);
    border: none;
    border-radius: var(--radius-sm, 4px);
    font-size: 16px;
    cursor: pointer;
    opacity: 0.6;
    transition: opacity 0.2s, background-color 0.2s;
}

.notification-center-item__actions button:hover {
    opacity: 1;
    background: var(--color-border, #e9ecef);
}

.notification-center-item__actions .mark-read-btn {
    color: var(--notification-success);
}

.notification-center-item__actions .delete-btn {
    color: var(--notification-error);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 767px) {
    .notification-toast-container {
        left: var(--spacing-md, 16px);
        right: var(--spacing-md, 16px);
        max-width: none;
    }

    /* Mobile: Bottom sheet style dropdown */
    .notifications-dropdown-panel {
        position: fixed !important;
        top: auto !important;
        bottom: 0 !important;
        left: 0 !important;
        right: 0 !important;
        width: 100% !important;
    }

    .notifications-dropdown {
        position: relative;
        width: 100%;
        max-height: 70vh;
        border-radius: 16px 16px 0 0;
        transform: translateY(100%);
        transition: transform 0.3s ease-out;
    }

    .notifications-dropdown.open {
        transform: translateY(0);
    }

    .notifications-dropdown__header {
        padding: 16px;
        border-radius: 16px 16px 0 0;
    }

    .notifications-dropdown__header h3 {
        font-size: 1rem;
    }

    .notifications-dropdown__list {
        max-height: calc(70vh - 120px);
    }

    .notification-center {
        padding: var(--spacing-md, 16px);
    }

    .notification-center__header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md, 16px);
    }

    .notification-center-item {
        flex-direction: column;
    }

    .notification-center-item__actions {
        align-self: flex-end;
    }
}

/* ============================================================
   LOADING STATE
   ============================================================ */
.loading-spinner {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl, 32px);
    color: var(--color-text-muted, #6c757d);
}

.loading-spinner::before {
    content: '';
    width: 24px;
    height: 24px;
    margin-right: var(--spacing-sm, 8px);
    border: 2px solid var(--color-border, #e9ecef);
    border-top-color: var(--color-primary, #0d6efd);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ============================================================
   LEGACY NOTIFICATION BAR (index.html #notification)
   ============================================================ */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background: white;
    padding: 15px 20px;
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    z-index: var(--z-toast, 10100);
    display: none;
    align-items: center;
    gap: 12px;
    max-width: 400px;
    border-left: 4px solid var(--color-primary, #3498db);
    transform: translateX(120%);
    transition: transform 0.3s ease;
}

.notification.show {
    display: flex;
    transform: translateX(0);
}

.notification.success {
    border-left-color: var(--color-success, #27ae60);
}

.notification.error {
    border-left-color: var(--color-error, #e74c3c);
}

.notification.warning {
    border-left-color: var(--color-warning, #f39c12);
}

.notification-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.notification-content {
    flex: 1;
}

.notification-title {
    font-weight: 600;
    color: var(--color-text-primary, #2c3e50);
    margin-bottom: 5px;
}

.notification-message {
    color: var(--color-text-secondary, #666);
    font-size: 0.9rem;
}

.notification-close {
    background: none;
    border: none;
    color: var(--color-text-muted, #999);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0;
    margin-left: 10px;
}

.notification-close:hover {
    color: var(--color-text-primary, #333);
}

/* Notification Action Button (Retry, etc.) */
.notification-actions {
    margin-top: 10px;
    display: flex;
    gap: 8px;
}

.notification-action-btn {
    padding: 8px 16px;
    background: var(--color-primary, #3498db);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
}

.notification-action-btn:hover {
    background: var(--color-primary-dark, #2980b9);
    transform: translateY(-1px);
}

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

.notification.error .notification-action-btn {
    background: var(--color-error, #e74c3c);
}

.notification.error .notification-action-btn:hover {
    background: #c0392b;
}

/* Bell animation */
.notification-bell {
    animation: bell-ring 4s ease-in-out infinite;
}

@keyframes bell-ring {
    0%, 100% { transform: rotate(0deg); }
    10%, 30% { transform: rotate(10deg); }
    20%, 40% { transform: rotate(-10deg); }
    50% { transform: rotate(0deg); }
}

/* Badge pulse */
.notification-badge {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}