/**
 * Dungeon Grinder - Shared UI Components
 * Common styles used across all plugin modules
 *
 * This file contains extracted common patterns to reduce CSS duplication.
 * Modules: Tile Editor (dtg), Map Builder (dmb), Explorer (dex), Encounter Editor (ete)
 */

/* ==========================================
   Shared CSS Custom Properties
   Define once, inherit everywhere
   ========================================== */

:root {
    /* Shared UI Colors - can be overridden per module */
    --dg-color-bg: #2a2a2a;
    --dg-color-panel: #3a3a3a;
    --dg-color-panel-light: #4a4a4a;
    --dg-color-panel-dark: #2a2a2a;
    --dg-color-text: #e0e0e0;
    --dg-color-text-muted: #a0a0a0;
    --dg-color-accent: #4a90d9;
    --dg-color-accent-hover: #5aa0e9;
    --dg-color-border: #555;
    --dg-color-success: #4caf50;
    --dg-color-danger: #f44336;
    --dg-color-warning: #ff9800;

    /* Classic dungeon map colors */
    --dg-color-solid: #4a90d9;
    --dg-color-solid-dark: #3a7bc8;
    --dg-color-open: #f5f5f0;
    --dg-color-grid: #c0c0c0;

    /* Shared dimensions */
    --dg-border-radius: 4px;
    --dg-border-radius-lg: 8px;

    /* Shared z-index layers */
    --dg-z-modal: 100000;
    --dg-z-notification: 100001;
    --dg-z-mobile-overlay: 2147483640;
    --dg-z-mobile-panel: 2147483641;
    --dg-z-mobile-toolbar: 2147483646;
    --dg-z-mobile-toggle: 2147483647;
}

/* ==========================================
   Shared Font Stack
   ========================================== */

.dtg-app-container,
.dmb-app-container,
.dex-app-container,
.ete-app-container {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    /* Ensure plugin content sits below navigation dropdowns */
    position: relative;
    z-index: 1;
}

/* ==========================================
   Shared Box-Sizing Reset
   ========================================== */

.dtg-app-container *,
.dtg-app-container *::before,
.dtg-app-container *::after,
.dmb-app-container *,
.dmb-app-container *::before,
.dmb-app-container *::after,
.dex-app-container *,
.dex-app-container *::before,
.dex-app-container *::after,
.ete-app-container *,
.ete-app-container *::before,
.ete-app-container *::after {
    box-sizing: border-box;
}

/* ==========================================
   Shared Accessibility - Focus States
   Keyboard navigation indicators
   ========================================== */

.dtg-app-container button:focus-visible,
.dtg-app-container select:focus-visible,
.dtg-app-container input:focus-visible,
.dtg-app-container textarea:focus-visible,
.dtg-app-container [tabindex]:focus-visible,
.dmb-app-container button:focus-visible,
.dmb-app-container select:focus-visible,
.dmb-app-container input:focus-visible,
.dmb-app-container textarea:focus-visible,
.dmb-app-container [tabindex]:focus-visible,
.dex-app-container button:focus-visible,
.dex-app-container select:focus-visible,
.dex-app-container input:focus-visible,
.dex-app-container textarea:focus-visible,
.dex-app-container [tabindex]:focus-visible,
.ete-app-container button:focus-visible,
.ete-app-container select:focus-visible,
.ete-app-container input:focus-visible,
.ete-app-container textarea:focus-visible,
.ete-app-container [tabindex]:focus-visible {
    outline: 2px solid var(--dg-color-accent);
    outline-offset: 2px;
}

/* ==========================================
   Shared Hint Banner Component
   First-time user guidance banners
   ========================================== */

.dtg-hint-banner,
.dmb-hint-banner,
.dex-hint-banner {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: linear-gradient(135deg, rgba(74, 144, 217, 0.15) 0%, rgba(74, 144, 217, 0.05) 100%);
    border-left: 4px solid var(--dg-color-accent);
    border-radius: 0 4px 4px 0;
    margin: 0 0 1px 0;
}

.dtg-hint-banner.hidden,
.dmb-hint-banner.hidden,
.dex-hint-banner.hidden {
    display: none;
}

.dtg-hint-icon,
.dmb-hint-icon,
.dex-hint-icon {
    font-size: 1.2rem;
    flex-shrink: 0;
}

.dtg-hint-text,
.dmb-hint-text,
.dex-hint-text {
    flex: 1;
    font-size: 0.85rem;
    color: var(--dg-color-text);
    line-height: 1.4;
}

.dtg-hint-text strong,
.dmb-hint-text strong,
.dex-hint-text strong {
    color: var(--dg-color-accent);
}

.dtg-hint-dismiss,
.dmb-hint-dismiss,
.dex-hint-dismiss {
    background: none;
    border: none;
    color: var(--dg-color-text-muted);
    font-size: 1.4rem;
    cursor: pointer;
    padding: 0;
    line-height: 1;
    opacity: 0.6;
    transition: opacity 0.2s ease;
    flex-shrink: 0;
}

.dtg-hint-dismiss:hover,
.dmb-hint-dismiss:hover,
.dex-hint-dismiss:hover {
    opacity: 1;
    color: var(--dg-color-text);
}

/* ==========================================
   Shared Section Description Component
   Contextual help within tool sections
   ========================================== */

.dtg-section-description,
.dmb-section-description {
    font-size: 0.75rem;
    color: var(--dg-color-text-muted);
    line-height: 1.4;
    margin: 0 0 10px 0;
    padding: 8px;
    background-color: rgba(0, 0, 0, 0.15);
    border-radius: 4px;
    border-left: 3px solid var(--dg-color-accent);
}

/* ==========================================
   Shared Empty State Component
   Rich empty state displays with icons
   ========================================== */

.dtg-empty-state,
.dmb-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 30px 15px;
}

.dtg-empty-state-icon,
.dmb-empty-state-icon {
    font-size: 2.5rem;
    margin-bottom: 10px;
    opacity: 0.5;
}

.dtg-empty-state-text,
.dmb-empty-state-text {
    font-size: 0.9rem;
    color: var(--dg-color-text);
    margin: 0 0 5px 0;
    font-weight: 500;
}

.dtg-empty-state-hint,
.dmb-empty-state-hint {
    font-size: 0.75rem;
    color: var(--dg-color-text-muted);
    margin: 0;
}

.dtg-empty-state-small,
.dmb-empty-state-small {
    padding: 15px 10px;
}

.dtg-empty-state-small .dtg-empty-state-icon,
.dtg-empty-state-small .dmb-empty-state-icon,
.dmb-empty-state-small .dtg-empty-state-icon,
.dmb-empty-state-small .dmb-empty-state-icon {
    font-size: 1.5rem;
    margin-bottom: 5px;
}

.dtg-empty-state-small .dtg-empty-state-text,
.dtg-empty-state-small .dmb-empty-state-text,
.dmb-empty-state-small .dtg-empty-state-text,
.dmb-empty-state-small .dmb-empty-state-text {
    font-size: 0.8rem;
}

/* ==========================================
   Shared Help Text Component
   Subtle guidance text for form fields
   ========================================== */

.dtg-help-text,
.dmb-help-text,
.dmb-section-hint,
.dex-help-text,
.dex-form-hint,
.ete-help-text {
    font-size: 0.75rem;
    color: var(--dg-color-text-muted);
    margin: 4px 0 0 0;
    padding: 0;
    line-height: 1.4;
}

/* ==========================================
   Shared Notification Animation
   Slide in/out effects for toast messages
   ========================================== */

@keyframes dg-slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes dg-slideOut {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(100%);
        opacity: 0;
    }
}

/* Apply shared animations to module-specific notification classes */
.dtg-notification,
.dmb-notification,
.dex-notification {
    animation: dg-slideIn 0.3s ease;
}

/* ==========================================
   Shared Notification Base Styles
   ========================================== */

.dtg-notification,
.dmb-notification,
.dex-notification {
    position: fixed;
    top: 50px;
    right: 20px;
    padding: 12px 20px;
    border-radius: 4px;
    color: #fff;
    font-weight: 500;
    z-index: var(--dg-z-notification);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.dtg-notification-success,
.dmb-notification-success,
.dex-notification-success {
    background-color: var(--dg-color-success);
}

.dtg-notification-error,
.dmb-notification-error,
.dex-notification-error {
    background-color: var(--dg-color-danger);
}

.dtg-notification-info,
.dmb-notification-info,
.dex-notification-info {
    background-color: #2196f3;
}

/* ==========================================
   Shared Modal Base Styles
   ========================================== */

.dtg-modal,
.dmb-modal,
.dex-modal,
.ete-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: var(--dg-z-modal);
    align-items: center;
    justify-content: center;
}

.dtg-modal.active,
.dmb-modal.active,
.dex-modal.active,
.ete-modal.active {
    display: flex;
}

/* ==========================================
   Shared Modal Content Styles
   ========================================== */

.dtg-modal-content,
.dmb-modal-content,
.ete-modal-content {
    background-color: var(--dg-color-panel);
    border-radius: 8px;
    width: 90%;
    max-width: 600px;
    max-height: 80vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.dtg-modal-header,
.dmb-modal-header,
.ete-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    border-bottom: 1px solid var(--dg-color-border);
}

.dtg-modal-header h2,
.dmb-modal-header h2,
.ete-modal-header h2 {
    font-size: 1.2rem;
    margin: 0;
    padding: 0;
    color: var(--dg-color-text);
}

.dtg-modal-close,
.dmb-modal-close,
.ete-modal-close {
    background: none;
    border: none;
    color: var(--dg-color-text);
    font-size: 1.5rem;
    cursor: pointer;
    line-height: 1;
    padding: 0;
}

.dtg-modal-close:hover,
.dmb-modal-close:hover,
.ete-modal-close:hover {
    color: var(--dg-color-accent);
}

.dtg-modal-body,
.dmb-modal-body,
.ete-modal-body {
    padding: 20px;
    overflow-y: auto;
    flex: 1;
}

/* ==========================================
   Shared Scrollbar Styling
   ========================================== */

.dtg-app-container ::-webkit-scrollbar,
.dmb-app-container ::-webkit-scrollbar,
.dex-app-container ::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

.dtg-app-container ::-webkit-scrollbar-track,
.dmb-app-container ::-webkit-scrollbar-track,
.dex-app-container ::-webkit-scrollbar-track {
    background: var(--dg-color-panel);
}

.dtg-app-container ::-webkit-scrollbar-thumb,
.dmb-app-container ::-webkit-scrollbar-thumb,
.dex-app-container ::-webkit-scrollbar-thumb {
    background: var(--dg-color-border);
    border-radius: 4px;
}

.dtg-app-container ::-webkit-scrollbar-thumb:hover,
.dmb-app-container ::-webkit-scrollbar-thumb:hover,
.dex-app-container ::-webkit-scrollbar-thumb:hover {
    background: var(--dg-color-text-muted);
}

/* ==========================================
   Shared Keyboard Shortcuts Modal
   ========================================== */

.dtg-shortcuts-list,
.dmb-shortcuts-list,
.dex-shortcuts-list,
.ete-shortcuts-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.dtg-shortcut-item,
.dmb-shortcut-item,
.dex-shortcut-item,
.ete-shortcut-item {
    display: flex;
    align-items: center;
    gap: 15px;
}

.dtg-shortcut-item kbd,
.dmb-shortcut-item kbd,
.dex-shortcut-item kbd,
.ete-shortcut-item kbd {
    display: inline-block;
    min-width: 70px;
    padding: 6px 12px;
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 600;
    text-align: center;
    background-color: var(--dg-color-bg);
    border: 1px solid var(--dg-color-border);
    border-radius: 4px;
    box-shadow: 0 2px 0 var(--dg-color-border);
    color: var(--dg-color-text);
}

.dtg-shortcut-item span,
.dmb-shortcut-item span,
.dex-shortcut-item span,
.ete-shortcut-item span {
    color: var(--dg-color-text);
    font-size: 0.9rem;
}

/* Small modal variant for shortcuts */
.dtg-modal-small,
.dmb-modal-small,
.dex-modal-small {
    max-width: 450px;
}

/* ==========================================
   Shared Mobile Toggle Button Base
   Floating action buttons for mobile UI
   ========================================== */

.dtg-mobile-toggle,
.dmb-mobile-toggle,
.dex-mobile-toggle {
    display: none;
    position: fixed !important;
    z-index: var(--dg-z-mobile-toggle) !important;
    width: 56px !important;
    height: 56px !important;
    border-radius: 50% !important;
    background-color: #4a90d9 !important;
    border: none !important;
    color: white !important;
    font-size: 1.5rem !important;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5) !important;
    transition: transform 0.2s ease, background-color 0.2s ease;
    align-items: center;
    justify-content: center;
    -webkit-tap-highlight-color: transparent;
    -webkit-touch-callout: none;
    touch-action: manipulation;
    -webkit-transform: translate3d(0,0,0);
    transform: translate3d(0,0,0);
    contain: none;
    isolation: isolate;
}

.dtg-mobile-toggle:hover,
.dmb-mobile-toggle:hover,
.dex-mobile-toggle:hover {
    transform: scale(1.1);
}

.dtg-mobile-toggle:active,
.dmb-mobile-toggle:active,
.dex-mobile-toggle:active {
    transform: scale(0.95);
}

/* ==========================================
   Shared Mobile Toolbar Base
   Bottom navigation for mobile devices
   ========================================== */

.dtg-mobile-toolbar,
.dmb-mobile-toolbar,
.dex-mobile-toolbar {
    display: none;
    position: fixed !important;
    bottom: 0 !important;
    left: 0 !important;
    right: 0 !important;
    height: 64px !important;
    background-color: #3a3a3a !important;
    border-top: 1px solid #555 !important;
    padding: 8px 16px !important;
    padding-bottom: 8px !important;
    z-index: var(--dg-z-mobile-toolbar) !important;
    justify-content: space-around;
    align-items: center;
    gap: 8px;
    -webkit-transform: translate3d(0,0,0);
    transform: translate3d(0,0,0);
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    contain: none;
    isolation: isolate;
}

/* iOS Safe Area Support for mobile toolbar */
@supports (padding-bottom: env(safe-area-inset-bottom)) {
    .dtg-mobile-toolbar,
    .dmb-mobile-toolbar,
    .dex-mobile-toolbar {
        padding-bottom: calc(8px + env(safe-area-inset-bottom));
        height: calc(64px + env(safe-area-inset-bottom));
    }
}

/* ==========================================
   Shared Mobile Overlay
   Background overlay when panels are open
   ========================================== */

.dtg-mobile-overlay,
.dmb-mobile-overlay,
.dex-mobile-overlay {
    display: none;
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    background-color: rgba(0, 0, 0, 0.5) !important;
    z-index: var(--dg-z-mobile-overlay) !important;
    opacity: 0;
    transition: opacity 0.3s ease;
    -webkit-transform: translate3d(0,0,0);
    transform: translate3d(0,0,0);
    contain: none;
    pointer-events: none;
}

.dtg-mobile-overlay.active,
.dmb-mobile-overlay.active,
.dex-mobile-overlay.active {
    display: block !important;
    opacity: 1 !important;
    pointer-events: auto;
}

/* ==========================================
   Shared Mobile Swipe Indicators
   Edge hints for panel access
   ========================================== */

.dtg-swipe-indicator,
.dmb-swipe-indicator,
.dex-swipe-indicator {
    display: none;
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    width: 6px;
    height: 80px;
    background: linear-gradient(to bottom, transparent, rgba(74, 144, 217, 0.6), transparent);
    border-radius: 3px;
    z-index: 2147483638;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s ease;
}

@keyframes dg-peek-pulse {
    0%, 100% { opacity: 0.4; transform: translateY(-50%) scaleY(1); }
    50% { opacity: 0.8; transform: translateY(-50%) scaleY(1.1); }
}

.dtg-swipe-indicator.visible,
.dmb-swipe-indicator.visible,
.dex-swipe-indicator.visible {
    opacity: 1;
    animation: dg-peek-pulse 2s ease-in-out infinite;
}

/* ==========================================
   Shared Panel Close Button (Mobile)
   ========================================== */

.dtg-panel-close-btn,
.dmb-panel-close-btn,
.dex-panel-close-btn {
    display: none;
    position: absolute;
    top: 12px;
    right: 12px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--dg-color-text);
    font-size: 1.2rem;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    z-index: 10;
    -webkit-tap-highlight-color: transparent;
}

.dtg-panel-close-btn:hover,
.dtg-panel-close-btn:active,
.dmb-panel-close-btn:hover,
.dmb-panel-close-btn:active,
.dex-panel-close-btn:hover,
.dex-panel-close-btn:active {
    background-color: rgba(229, 57, 53, 0.8);
    color: white;
    transform: scale(1.1);
}

/* ==========================================
   Shared Desktop Tab Buttons
   Slide-out panel triggers
   ========================================== */

.dtg-desktop-tab,
.dmb-desktop-tab {
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    background: linear-gradient(135deg, var(--dg-color-accent) 0%, #3a7bc8 100%);
    border: none;
    color: white;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 14px 10px;
    z-index: 1000;
    transition: all 0.3s ease;
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.3);
}

.dtg-desktop-tab:hover,
.dmb-desktop-tab:hover {
    width: 60px;
}

.dtg-desktop-tab.active,
.dmb-desktop-tab.active {
    background: linear-gradient(135deg, #5aa0e9 0%, var(--dg-color-accent) 100%);
}

.dtg-desktop-tab-icon,
.dmb-desktop-tab-icon {
    font-size: 1.7rem;
    margin-bottom: 5px;
}

.dtg-desktop-tab-label,
.dmb-desktop-tab-label {
    font-size: 0.78rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    writing-mode: vertical-lr;
    text-orientation: mixed;
}

/* ==========================================
   Shared Export Group Component
   ========================================== */

.dtg-export-group,
.dmb-export-group {
    background-color: var(--dg-color-panel-light);
    border-radius: 4px;
    padding: 10px;
    margin-bottom: 8px;
}

.dtg-export-group .dtg-form-group,
.dmb-export-group .dmb-form-group {
    margin-bottom: 8px;
}

.dtg-export-group .dtg-action-btn,
.dmb-export-group .dmb-action-btn {
    margin-bottom: 0;
}

/* ==========================================
   Shared Select Dropdown Styles
   ========================================== */

.dtg-select,
.dmb-select,
.dex-select {
    width: 100%;
    padding: 6px 8px;
    background-color: var(--dg-color-bg);
    border: 1px solid var(--dg-color-border);
    border-radius: 4px;
    color: var(--dg-color-text);
    font-size: 0.8rem;
    font-family: inherit;
    cursor: pointer;
}

.dtg-select:focus,
.dmb-select:focus,
.dex-select:focus {
    outline: none;
    border-color: var(--dg-color-accent);
}

.dtg-select option,
.dmb-select option,
.dex-select option {
    background-color: var(--dg-color-panel);
    color: var(--dg-color-text);
}

/* ==========================================
   Shared Checkbox Styling
   ========================================== */

.dtg-checkbox-group,
.dmb-checkbox-group,
.dex-checkbox-group {
    margin-bottom: 10px;
}

.dtg-checkbox-group label,
.dmb-checkbox-group label,
.dex-checkbox-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-weight: 500;
}

.dtg-checkbox,
.dmb-checkbox,
.dex-checkbox {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--dg-color-accent);
}

/* ==========================================
   Mobile Responsive - Show Mobile UI
   ========================================== */

@media screen and (max-width: 600px) {
    .dtg-mobile-toggle,
    .dmb-mobile-toggle,
    .dex-mobile-toggle {
        display: flex !important;
    }

    .dtg-mobile-toolbar,
    .dmb-mobile-toolbar,
    .dex-mobile-toolbar {
        display: flex !important;
    }

    .dtg-swipe-indicator,
    .dmb-swipe-indicator,
    .dex-swipe-indicator {
        display: block !important;
    }

    .dtg-panel-close-btn,
    .dmb-panel-close-btn,
    .dex-panel-close-btn {
        display: flex !important;
    }
}