/* ==========================================================================
   ĐIỀU ĐỘ HƯNG YÊN — Unified SCADA / CAD Design System (app.css)
   ========================================================================== */

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

:root {
    /* Typography */
    --ui-font: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    --ui-font-mono: 'Cascadia Code', 'Consolas', monospace;
    --ui-control-height: 36px;
    --ui-control-sm-height: 30px;
    --ui-control-size: 13px;

    /* Color Palette — Slate Dark SCADA Theme */
    --bg-canvas: #0f172a;
    --bg-surface-1: #1e293b;
    --bg-surface-2: #334155;
    --bg-surface-3: #475569;
    --bg-surface-elevated: rgba(15, 23, 42, 0.94);
    --bg-input: rgba(30, 41, 59, 0.85);
    --bg-input-focus: rgba(15, 23, 42, 0.95);

    /* Text Colors */
    --text-primary: #f8fafc;
    --text-secondary: #e2e8f0;
    --text-muted: #94a3b8;
    --text-subtle: #64748b;

    /* Accent & Semantic Colors */
    --accent-primary: #3b82f6;
    --accent-primary-hover: #2563eb;
    --accent-primary-active: #1d4ed8;
    --accent-glow: rgba(59, 130, 246, 0.32);
    --color-success: #10b981;
    --color-success-hover: #059669;
    --color-warning: #f59e0b;
    --color-warning-hover: #d97706;
    --color-danger: #ef4444;
    --color-danger-hover: #dc2626;
    --color-info: #06b6d4;

    /* Borders & Dividers */
    --border-subtle: rgba(148, 163, 184, 0.16);
    --border-default: rgba(148, 163, 184, 0.28);
    --border-strong: #475569;
    --border-focus: #60a5fa;

    /* Glassmorphism Tokens */
    --ui-glass: linear-gradient(180deg, rgba(51, 65, 85, 0.42), rgba(15, 23, 42, 0.38));
    --ui-glass-hover: linear-gradient(180deg, rgba(71, 85, 105, 0.56), rgba(30, 41, 59, 0.48));
    --ui-glass-active: linear-gradient(180deg, rgba(59, 130, 246, 0.54), rgba(37, 99, 235, 0.36));
    --ui-glass-border: rgba(148, 163, 184, 0.28);
    --ui-glass-shadow: 0 4px 14px rgba(2, 6, 23, 0.24), inset 0 1px 0 rgba(255, 255, 255, 0.08);
    --ui-glass-blur: blur(10px) saturate(140%);
    --ui-panel-background: var(--ui-glass);
    --ui-panel-shadow: var(--ui-glass-shadow);

    /* Radii */
    --radius-xs: 4px;
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 14px;
    --radius-pill: 999px;

    /* Z-Index Scale */
    --z-sidebar: 100;
    --z-inspector: 100;
    --z-topbar: 200;
    --z-banner: 220;
    --z-dock: 250;
    --z-modal: 1000;
    --z-modal-high: 1100;
    --z-tt-modal: 1200;
    --z-copyright: 1400;
    --z-tooltip: 1500;
    --z-context-menu: 9999;
    --z-popover: 10001;
    --z-dialog: 10500;
    --z-toast: 11000;
}

body {
    font-family: var(--ui-font);
    overflow: hidden;
    background-color: var(--bg-canvas);
    color: var(--text-secondary);
    -webkit-font-smoothing: antialiased;
}

button,
input,
select,
textarea {
    font-family: inherit;
}

/* Custom Thin Scrollbars */
::-webkit-scrollbar {
    width: 7px;
    height: 7px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: rgba(148, 163, 184, 0.35);
    border-radius: var(--radius-pill);
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(148, 163, 184, 0.58);
}

/* ==========================================================================
   App Layout & Split-Screen Workspace
   ========================================================================== */

#app {
    display: flex;
    height: 100vh;
    width: 100vw;
    overflow: hidden;
}

#legacy-workspace {
    position: relative;
    flex: 1 1 100%;
    width: 100%;
    min-width: 0;
    height: 100vh;
    overflow: hidden;
    background: var(--bg-canvas);
    display: flex;
}

#legacy-workspace > main,
main {
    flex: 1;
    width: 100%;
    height: 100%;
    position: relative;
    background-color: var(--bg-canvas);
    cursor: crosshair;
}

canvas {
    display: block;
}

h2,
h3 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

/* ==========================================================================
   Left Sidebar & Floating Toolbars
   ========================================================================== */

#sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: 240px;
    background-color: transparent;
    border-right: none;
    padding: 10px 12px 12px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    pointer-events: none;
    z-index: var(--z-sidebar);
    overflow: visible;
}

#legacy-workspace > #sidebar {
    position: absolute;
}

.sidebar-stack {
    width: 172px;
    display: flex;
    flex-direction: column;
    gap: 5px;
}

/* Sidebar File Controls & Mode Switch */
.file-controls,
.mode-switch {
    width: 172px;
    display: flex;
    gap: 5px;
    background: transparent;
    backdrop-filter: none;
    border: none;
    box-shadow: none;
    padding: 0;
    margin: 0;
    pointer-events: auto;
}

.mode-switch {
    flex-direction: column;
}

/* File Action Buttons (Mở / Lưu) */
.file-controls .tool-btn {
    flex: 1;
    height: var(--ui-control-height);
    min-height: var(--ui-control-height);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    padding: 0 8px;
    border: 1px solid var(--ui-glass-border);
    border-radius: var(--radius-md);
    background: var(--ui-glass);
    backdrop-filter: var(--ui-glass-blur);
    -webkit-backdrop-filter: var(--ui-glass-blur);
    box-shadow: var(--ui-glass-shadow);
    color: #e8eef7;
    font-family: inherit;
    font-size: var(--ui-control-size);
    font-weight: 500;
    line-height: 1;
    cursor: pointer;
    transition: background 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease, transform 0.1s ease;
    white-space: nowrap;
    user-select: none;
}

.file-controls .tool-btn:hover {
    background: var(--ui-glass-hover);
    border-color: rgba(191, 219, 254, 0.48);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(2, 6, 23, 0.25), inset 0 1px 0 rgba(255, 255, 255, 0.12);
}

.file-controls .tool-btn:active {
    transform: translateY(1px);
    box-shadow: inset 0 1px 3px rgba(2, 6, 23, 0.25);
}

.file-controls .tool-btn:focus-visible,
.mode-toggle:focus-visible {
    outline: 2px solid var(--border-focus);
    outline-offset: 2px;
}

/* Mode & Grid Segmented Switch Controls */
.mode-toggle {
    position: relative;
    width: 100%;
    min-width: 0;
    height: var(--ui-control-height);
    min-height: var(--ui-control-height);
    padding: 3px;
    border: 1px solid var(--ui-glass-border);
    border-radius: var(--radius-md);
    background: var(--ui-glass);
    backdrop-filter: var(--ui-glass-blur);
    -webkit-backdrop-filter: var(--ui-glass-blur);
    box-shadow: var(--ui-glass-shadow);
    font-size: var(--ui-control-size);
    font-weight: 500;
    line-height: 1;
    overflow: hidden;
    cursor: pointer;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.mode-toggle:hover {
    border-color: rgba(191, 219, 254, 0.48);
    box-shadow: 0 3px 8px rgba(2, 6, 23, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.mode-toggle::before {
    content: "";
    position: absolute;
    top: 3px;
    bottom: 3px;
    left: 3px;
    width: calc(50% - 3px);
    border-radius: var(--radius-sm);
    pointer-events: none;
    z-index: 1;
    background: var(--ui-glass-active);
    border: 1px solid rgba(147, 197, 253, 0.44);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.14);
    transition: transform 0.22s cubic-bezier(0.4, 0, 0.2, 1);
}

.mode-toggle[data-mode="edit"]::before,
.mode-toggle[data-grid="detail"]::before {
    transform: translateX(100%);
}

.mode-toggle-track {
    position: relative;
    z-index: 2;
    height: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: stretch;
}

.mode-toggle-option {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 4px;
    font-family: inherit;
    font-size: inherit;
    font-weight: inherit;
    color: #b4c2d5;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: color 0.2s ease;
    user-select: none;
}

.mode-toggle:hover .mode-toggle-option {
    color: #cbd5e1;
}

.mode-toggle[data-mode="run"] .mode-toggle-option[data-option="run"],
.mode-toggle[data-mode="edit"] .mode-toggle-option[data-option="edit"],
.mode-toggle[data-grid="master"] .mode-toggle-option[data-option="master"],
.mode-toggle[data-grid="detail"] .mode-toggle-option[data-option="detail"] {
    color: #ffffff;
    text-shadow: 0 1px 2px rgba(2, 6, 23, 0.25);
}

.tool-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.tool-btn {
    padding: 7px 11px;
    text-align: left;
    background-color: rgba(51, 65, 85, 0.72);
    border: 1px solid rgba(148, 163, 184, 0.18);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.16s ease;
    font-family: var(--ui-font);
    font-size: var(--ui-control-size);
    font-weight: 400;
    line-height: 1.3;
    display: flex;
    align-items: center;
}

.tool-btn:hover {
    background-color: rgba(71, 85, 105, 0.88);
    border-color: rgba(148, 163, 184, 0.32);
}

.tool-btn.active {
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    border-color: #60a5fa;
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.35);
    color: #ffffff;
}

.tool-btn.danger {
    background-color: #7f1d1d;
    color: #fca5a5;
    margin-top: 0.5rem;
}

.tool-btn.danger:hover {
    background-color: #b91c1c;
    color: white;
}

.action-btn {
    padding: 7px 11px;
    text-align: center;
    justify-content: center;
    background: rgba(51, 65, 85, 0.72);
    border: 1px solid rgba(148, 163, 184, 0.22);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--ui-font);
    font-size: var(--ui-control-size);
    font-weight: 400;
    line-height: 1.3;
    cursor: pointer;
    transition: all 0.18s ease;
    display: flex;
    align-items: center;
    gap: 6px;
}

.action-btn:hover {
    background: rgba(71, 85, 105, 0.95);
    border-color: rgba(191, 219, 254, 0.45);
}

.user-controls,
.search-container {
    pointer-events: auto;
    background: var(--ui-panel-background);
    border-radius: var(--radius-sm);
    backdrop-filter: var(--ui-glass-blur);
    -webkit-backdrop-filter: var(--ui-glass-blur);
}

/* Edit tools panel - floating device palette */
#edit-tools {
    pointer-events: auto;
    width: 100%;
    background: var(--ui-glass);
    border: 1px solid var(--ui-glass-border);
    box-shadow: var(--ui-glass-shadow);
    padding: 10px 8px;
    border-radius: var(--radius-lg);
    backdrop-filter: var(--ui-glass-blur);
    -webkit-backdrop-filter: var(--ui-glass-blur);
    margin-top: 2px;
    max-height: calc(100vh - 150px);
    overflow-y: auto;
    overflow-x: hidden;
    scrollbar-width: thin;
    scrollbar-color: rgba(148, 163, 184, 0.5) transparent;
}

.panel-heading-sm {
    color: var(--text-muted);
    margin-bottom: 6px;
    font-family: var(--ui-font);
    font-size: 0.74rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    border-bottom: 1px solid var(--border-subtle);
    padding: 0 4px 6px;
}

.device-icon {
    width: 18px;
    height: 18px;
    margin-right: 9px;
    color: #93c5fd;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.85;
    stroke-linecap: round;
    stroke-linejoin: round;
    flex-shrink: 0;
}

.tool-btn.active .device-icon {
    color: #ffffff;
}

.sidebar-tool-btn {
    margin-bottom: 2px;
    text-align: left;
    width: 100%;
    display: flex;
    align-items: center;
}

.sidebar-tool-btn:last-child {
    margin-bottom: 0;
}

/* ==========================================================================
   Right Configuration / Inspector Panel (#right-panel & #selection-tools)
   ========================================================================== */

#right-panel {
    position: fixed;
    top: 50%;
    right: 0;
    transform: translateY(-50%);
    width: 268px;
    padding: 10px 12px;
    pointer-events: none;
    z-index: var(--z-inspector);
    font-family: var(--ui-font);
}

#selection-tools {
    display: none;
    pointer-events: auto;
    background: var(--ui-glass);
    border: 1px solid var(--ui-glass-border);
    box-shadow: var(--ui-glass-shadow);
    padding: 12px;
    border-radius: var(--radius-lg);
    backdrop-filter: var(--ui-glass-blur);
    -webkit-backdrop-filter: var(--ui-glass-blur);
    flex-direction: column;
    gap: 8px;
    max-height: calc(100vh - 96px);
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: rgba(148, 163, 184, 0.5) transparent;
}

.inspector-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 6px;
    border-bottom: 1px solid var(--border-subtle);
    padding-bottom: 7px;
    margin-bottom: 1px;
}

.inspector-title {
    color: var(--text-muted);
    font-family: var(--ui-font);
    font-size: 0.74rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 6px;
}

.inspector-badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 7px;
    border-radius: var(--radius-pill);
    background: rgba(59, 130, 246, 0.18);
    border: 1px solid rgba(96, 165, 250, 0.38);
    color: #93c5fd;
    font-family: var(--ui-font);
    font-size: 0.72rem;
    font-weight: 500;
    letter-spacing: 0.01em;
    white-space: nowrap;
}

.inspector-section {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding-top: 7px;
    border-top: 1px solid var(--border-subtle);
}

.inspector-section:first-of-type {
    border-top: none;
    padding-top: 0;
}

.inspector-label,
.panel-muted-label {
    color: #cbd5e1;
    font-family: var(--ui-font);
    font-size: 12px;
    font-weight: 400;
    line-height: 1.3;
}

.panel-muted-label.spaced {
    margin-bottom: 4px;
}

.inspector-row {
    display: flex;
    gap: 5px;
    align-items: center;
}

/* Unified Form Controls inside Inspector & Panels */
.ui-input,
.ui-select,
.ui-textarea {
    width: 100%;
    background-color: rgba(51, 65, 85, 0.72);
    border: 1px solid rgba(148, 163, 184, 0.22);
    color: var(--text-primary);
    padding: 6px 9px;
    border-radius: var(--radius-sm);
    font-family: var(--ui-font);
    font-size: var(--ui-control-size);
    font-weight: 400;
    line-height: 1.3;
    transition: border-color 0.16s ease, box-shadow 0.16s ease, background-color 0.16s ease;
    outline: none;
}

.ui-select option {
    font-family: var(--ui-font);
    font-size: var(--ui-control-size);
    font-weight: 400;
    background-color: var(--bg-surface-1);
    color: var(--text-primary);
}

.ui-input::placeholder,
.ui-textarea::placeholder {
    color: var(--text-muted);
    font-weight: 400;
}

.ui-input:hover,
.ui-select:hover,
.ui-textarea:hover {
    background-color: rgba(71, 85, 105, 0.82);
    border-color: rgba(148, 163, 184, 0.34);
}

.ui-input:focus,
.ui-select:focus,
.ui-textarea:focus {
    border-color: var(--accent-primary);
    background-color: var(--bg-input-focus);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.22);
}

.ui-input[readonly] {
    background-color: rgba(15, 23, 42, 0.65);
    color: var(--text-muted);
    cursor: default;
}

.ui-textarea {
    resize: vertical;
    min-height: 76px;
    line-height: 1.45;
}

.btn-mini-icon {
    background: var(--accent-primary);
    border: 1px solid rgba(147, 197, 253, 0.35);
    color: #ffffff;
    width: 28px;
    height: 28px;
    flex-shrink: 0;
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--ui-font);
    font-size: 0.95rem;
    font-weight: 600;
    transition: background 0.15s ease;
}

.btn-mini-icon:hover {
    background: var(--accent-primary-hover);
}

.ui-check-label {
    display: flex;
    align-items: center;
    gap: 7px;
    color: var(--text-primary);
    font-family: var(--ui-font);
    font-size: var(--ui-control-size);
    font-weight: 400;
    line-height: 1.3;
    cursor: pointer;
    user-select: none;
    padding: 2px 0;
}

.ui-check-label.highlight-amber {
    color: #fbbf24;
    font-weight: 400;
}

.ui-check-label input[type="checkbox"] {
    accent-color: var(--accent-primary);
    width: 16px;
    height: 16px;
    cursor: pointer;
    flex-shrink: 0;
}

.ui-check-label.highlight-amber input[type="checkbox"] {
    accent-color: #eab308;
}

.dependent-box {
    padding: 8px 0 2px 10px;
    border-left: 2px solid #eab308;
    margin-top: 4px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.btn-pick-target {
    padding: 6px 10px;
    font-size: 0.8rem;
    font-weight: 600;
    border: 1px solid rgba(96, 165, 250, 0.45);
    border-radius: var(--radius-sm);
    background: var(--accent-primary);
    color: #ffffff;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    white-space: nowrap;
    transition: background 0.16s ease;
}

.btn-pick-target:hover {
    background: var(--accent-primary-hover);
}

/* Color Swatches */
.color-palette-inline {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.color-swatch-btn,
.note-color-btn,
.line-color-btn,
.annotation-color-btn {
    width: 24px;
    height: 24px;
    border-radius: 5px;
    border: 1.5px solid rgba(255, 255, 255, 0.55);
    cursor: pointer;
    transition: transform 0.14s ease, border-color 0.14s ease, box-shadow 0.14s ease;
}

.color-swatch-btn:hover,
.note-color-btn:hover,
.line-color-btn:hover,
.annotation-color-btn:hover {
    transform: scale(1.12);
    border-color: #ffffff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

.swatch-transparent {
    background: repeating-linear-gradient(45deg, #0f172a 0 4px, #94a3b8 4px 8px);
}

/* Run mode visibility rules */
#app.run-mode #toolbar-header,
#app.run-mode #edit-tools,
#app.run-mode #right-panel,
#app.run-mode #selection-tools,
#app.run-mode #run-tools,
#app.run-mode #info-panel {
    display: none !important;
}

#app.run-mode .run-controls {
    display: flex !important;
    pointer-events: auto;
    background: rgba(30, 41, 59, 0.85);
    padding: 5px;
    border-radius: 5px;
    backdrop-filter: blur(4px);
}

/* ==========================================================================
   Target Selection Banner
   ========================================================================== */

.target-selection-banner {
    position: absolute;
    top: 14px;
    left: 50%;
    transform: translateX(-50%);
    z-index: var(--z-banner);
    display: none;
    align-items: center;
    gap: 12px;
    width: min(720px, calc(100vw - 32px));
    padding: 10px 14px;
    border: 1px solid var(--color-warning);
    border-radius: var(--radius-md);
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    color: var(--text-primary);
    box-shadow: 0 10px 28px rgba(0, 0, 0, 0.42);
    pointer-events: auto;
}

.target-selection-banner__message {
    flex: 1;
    min-width: 0;
    font-size: 0.88rem;
    line-height: 1.35;
}

.target-selection-banner__message strong {
    color: #fbbf24;
}

.target-selection-banner__cancel {
    flex: 0 0 auto;
    padding: 6px 12px;
    border: 1px solid #64748b;
    border-radius: var(--radius-sm);
    background: var(--bg-surface-2);
    color: #fff;
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.16s ease;
}

.target-selection-banner__cancel:hover {
    background: var(--bg-surface-3);
}

/* ==========================================================================
   Floating Top-Bar Icons & Account Dropdown
   ========================================================================== */

.top-bar-icons {
    position: fixed;
    top: 10px;
    right: 10px;
    display: flex;
    gap: 5px;
    align-items: flex-start;
    z-index: var(--z-topbar);
}

#legacy-workspace .top-bar-icons {
    position: absolute;
    top: 10px;
    right: 10px;
}

.collapsible-toolbar {
    display: flex;
    gap: 5px;
    align-items: flex-start;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.collapsible-toolbar.collapsed {
    display: none !important;
}

.icon-btn {
    width: var(--ui-control-height);
    height: var(--ui-control-height);
    border: 1px solid var(--ui-glass-border);
    border-radius: var(--radius-md);
    background: var(--ui-glass);
    box-shadow: var(--ui-glass-shadow);
    color: var(--text-primary);
    font-size: 18px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.18s ease;
    backdrop-filter: var(--ui-glass-blur);
    -webkit-backdrop-filter: var(--ui-glass-blur);
    text-decoration: none;
}

.icon-btn svg,
.ui-icon {
    width: 20px;
    height: 20px;
    stroke: currentColor;
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    flex-shrink: 0;
}

.icon-btn:hover {
    background: var(--ui-glass-hover);
    border-color: rgba(191, 219, 254, 0.48);
}

.icon-btn:focus-visible {
    outline: 2px solid var(--border-focus);
    outline-offset: 2px;
}

.icon-btn.logged-in,
#btn-outage-overlay[aria-pressed="true"] {
    color: #4ade80;
}

.account-menu {
    position: relative;
}

.account-btn {
    background: var(--ui-glass-active);
    color: var(--text-primary);
}

.account-btn.logged-in,
#btn-outage-overlay[aria-pressed="true"] {
    border-color: rgba(147, 197, 253, 0.44);
    box-shadow: var(--ui-glass-shadow);
}

.account-btn:not(.logged-in) {
    background: var(--ui-glass);
    color: var(--text-primary);
    box-shadow: var(--ui-glass-shadow);
}

.account-btn:hover {
    background: var(--ui-glass-hover);
    color: #ffffff;
}

.account-btn svg {
    width: 22px;
    height: 22px;
}

#btn-settings svg {
    width: 22px;
    height: 22px;
    stroke-width: 1.9;
}

.account-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 196px;
    display: none;
    padding: 8px;
    border-radius: var(--radius-lg);
    background: var(--bg-surface-elevated);
    border: 1px solid var(--border-default);
    box-shadow: 0 20px 48px rgba(2, 6, 23, 0.45);
    backdrop-filter: blur(14px);
}

.account-dropdown.open {
    display: block;
}

.account-dropdown-label {
    margin-bottom: 6px;
    padding: 4px 8px 8px;
    border-bottom: 1px solid var(--border-subtle);
    font-size: 12px;
    color: #cbd5e1;
    line-height: 1.45;
}

.account-dropdown-btn {
    width: 100%;
    border: none;
    border-radius: var(--radius-md);
    background: transparent;
    color: var(--text-primary);
    padding: 9px 11px;
    text-align: left;
    font-size: 13.5px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.16s ease;
}

.account-dropdown-btn:hover {
    background: rgba(59, 130, 246, 0.22);
}

.button-icon {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

button.button-icon {
    justify-content: center;
}

.button-icon .ui-icon {
    width: 18px;
    height: 18px;
}

/* ==========================================================================
   Viewport Memory Dock
   ========================================================================== */

#viewport-memory-dock {
    position: fixed;
    right: 14px;
    bottom: 34px;
    z-index: var(--z-dock);
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 5px;
    border-radius: 10px;
    background: rgba(15, 23, 42, 0.78);
    border: 1px solid rgba(148, 163, 184, 0.24);
    box-shadow: 0 8px 22px rgba(2, 6, 23, 0.28);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.viewport-slot-btn {
    width: 28px;
    height: 28px;
    border-radius: 7px;
    font-size: 12px;
    font-weight: 700;
    cursor: pointer;
    user-select: none;
    transition: all 0.16s ease;
    border: 1px solid rgba(148, 163, 184, 0.22);
    background: rgba(30, 41, 59, 0.72);
    color: #94a3b8;
    box-shadow: none;
}

.viewport-slot-btn.is-saved {
    border-color: rgba(96, 165, 250, 0.52);
    background: rgba(37, 99, 235, 0.26);
    color: #f8fafc;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.viewport-slot-btn:hover {
    border-color: rgba(191, 219, 254, 0.65);
    color: #ffffff;
}

#floating-copyright {
    position: fixed;
    right: 14px;
    bottom: calc(12px + env(safe-area-inset-bottom, 0px));
    z-index: var(--z-copyright);
    color: rgba(226, 232, 240, 0.85);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.02em;
    pointer-events: none;
    user-select: none;
    white-space: nowrap;
    text-shadow: 0 1px 2px rgba(15, 23, 42, 0.55);
}

#app.thaotac-layout:not(.thaotac-panel-hidden) #floating-copyright,
#app.thaotac-layout:not(.thaotac-panel-hidden) #viewport-memory-dock {
    display: none !important;
}

#device-comment-tooltip {
    position: fixed;
    display: none;
    max-width: 250px;
    min-width: 0;
    padding: 7px 10px;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.92);
    color: #0f172a;
    border: 1px solid rgba(148, 163, 184, 0.55);
    box-shadow: 0 16px 36px rgba(15, 23, 42, 0.32);
    font-size: 13px;
    font-weight: 700;
    line-height: 1.35;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
    pointer-events: none;
    user-select: none;
    z-index: var(--z-tooltip);
}

/* ==========================================================================
   Context Menu & Popovers (Canvas Right-Click, Comment, Outage Reason)
   ========================================================================== */

#canvas-context-menu {
    position: fixed;
    display: none;
    background: rgba(15, 23, 42, 0.96);
    border: 1px solid var(--border-default);
    border-radius: 10px;
    padding: 5px;
    z-index: var(--z-context-menu);
    box-shadow: 0 14px 36px rgba(2, 6, 23, 0.55);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    min-width: 190px;
}

.ctx-menu-item {
    padding: 8px 12px;
    color: var(--text-primary);
    cursor: pointer;
    font-size: 13.5px;
    font-weight: 500;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    gap: 8px;
    transition: background 0.14s ease, color 0.14s ease;
    user-select: none;
}

.ctx-menu-item:hover {
    background: rgba(59, 130, 246, 0.24);
    color: #ffffff;
}

.ctx-menu-item.danger {
    color: #fca5a5;
}

.ctx-menu-item.danger:hover {
    background: rgba(239, 68, 68, 0.22);
    color: #fecaca;
}

.ctx-menu-sep {
    height: 1px;
    background: var(--border-subtle);
    margin: 4px 2px;
}

.ui-popover-card {
    position: fixed;
    display: none;
    width: min(320px, calc(100vw - 24px));
    padding: 14px;
    border-radius: var(--radius-lg);
    background: rgba(15, 23, 42, 0.97);
    border: 1px solid rgba(148, 163, 184, 0.35);
    box-shadow: 0 20px 48px rgba(2, 6, 23, 0.52);
    color: var(--text-primary);
    z-index: var(--z-popover);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}

.ui-popover-title {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.ui-popover-subtitle {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 9px;
    overflow-wrap: anywhere;
}

.ui-popover-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    margin-top: 10px;
}

.ui-btn-secondary,
.ui-btn-primary,
.ui-btn-danger {
    padding: 7px 13px;
    border-radius: var(--radius-sm);
    font-size: 12.5px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.16s ease;
}

.ui-btn-secondary {
    border: 1px solid var(--border-strong);
    background: var(--bg-surface-2);
    color: var(--text-secondary);
}

.ui-btn-secondary:hover {
    background: var(--bg-surface-3);
    color: #ffffff;
}

.ui-btn-primary {
    border: 1px solid rgba(96, 165, 250, 0.45);
    background: var(--accent-primary-hover);
    color: #ffffff;
}

.ui-btn-primary:hover {
    background: var(--accent-primary-active);
}

.ui-btn-danger {
    border: 1px solid rgba(248, 113, 113, 0.45);
    background: var(--color-danger-hover);
    color: #ffffff;
}

.ui-btn-danger:hover {
    background: #b91c1c;
}

/* ==========================================================================
   Modals, Settings, Login, Search Hub, Feeder Conflict
   ========================================================================== */

.modal {
    display: none;
    position: fixed;
    z-index: var(--z-modal);
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(2, 6, 23, 0.62);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.modal-content {
    background-color: var(--bg-surface-1);
    margin: 7vh auto;
    padding: 20px;
    border: 1px solid var(--border-default);
    width: 88%;
    max-width: 600px;
    border-radius: var(--radius-lg);
    box-shadow: 0 24px 60px rgba(2, 6, 23, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.06);
    color: var(--text-primary);
}

.modal-content--settings {
    max-width: 480px;
    margin: 6vh auto;
    max-height: 88vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.modal-content--cloud {
    max-width: 520px;
}

.close-modal {
    color: var(--text-muted);
    float: right;
    font-size: 26px;
    font-weight: bold;
    cursor: pointer;
    line-height: 1;
    transition: color 0.16s ease;
}

.close-modal:hover,
.close-modal:focus {
    color: var(--text-primary);
    text-decoration: none;
}

.modal-title-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 0;
}

.modal-title-row h3 {
    margin-bottom: 0;
}

.modal-title-row .close-modal {
    float: none;
    line-height: 1;
    flex: 0 0 auto;
}

.list-container {
    max-height: 400px;
    overflow-y: auto;
    margin-top: 14px;
}

/* Master Feeder Conflict Modal */
#master-feeder-conflict-modal {
    z-index: var(--z-modal-high);
}

#master-feeder-conflict-modal .modal-content {
    width: min(1100px, calc(100% - 28px));
    max-width: none;
    max-height: 90vh;
    margin: 5vh auto;
    display: flex;
    flex-direction: column;
}

#master-feeder-conflict-list {
    max-height: none;
    min-height: 0;
    overflow-y: auto;
}

.feeder-normalization-title {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
}

.feeder-normalization-title h3 {
    margin: 0;
}

.feeder-normalization-card {
    cursor: default;
    border-left-color: var(--color-warning);
}

.feeder-normalization-heading {
    font-weight: 700;
    margin-bottom: 8px;
}

.feeder-normalization-source {
    display: block;
    margin-top: 3px;
    color: #93c5fd;
    font-weight: 500;
}

.feeder-normalization-conflict {
    display: block;
    margin-top: 3px;
    color: #fbbf24;
    font-weight: 500;
}

.feeder-normalization-row {
    display: grid;
    grid-template-columns: minmax(190px, 1fr) minmax(190px, 1.2fr) auto auto;
    align-items: center;
    gap: 8px;
    padding: 8px 0;
    border-top: 1px solid var(--border-strong);
}

.feeder-normalization-label {
    min-width: 0;
    overflow-wrap: anywhere;
}

.feeder-normalization-label small {
    display: block;
    color: var(--text-muted);
    margin-top: 3px;
}

.feeder-normalization-input {
    width: 100%;
    min-width: 0;
    padding: 8px 10px;
    border: 1px solid #64748b;
    border-radius: 5px;
    color: var(--text-primary);
    background: var(--bg-surface-1);
    font: inherit;
}

.feeder-normalization-input.is-missing {
    border-color: var(--color-warning);
}

.feeder-normalization-action {
    width: auto;
    margin: 0;
    white-space: nowrap;
    padding: 8px 12px;
}

@media (max-width: 720px) {
    .feeder-normalization-row {
        grid-template-columns: 1fr auto auto;
    }

    .feeder-normalization-label {
        grid-column: 1 / -1;
    }
}

/* List & Search Results */
.list-item {
    background: var(--bg-surface-2);
    padding: 10px 12px;
    margin-bottom: 6px;
    border-radius: var(--radius-sm);
    border-left: 4px solid #eab308;
}

.search-result-item {
    background: var(--bg-surface-2);
    padding: 10px 12px;
    margin-bottom: 6px;
    border-radius: var(--radius-sm);
    border-left: 4px solid var(--accent-primary);
    cursor: pointer;
    transition: background 0.16s ease, transform 0.12s ease;
}

.search-result-item:hover {
    background: var(--bg-surface-3);
}

.search-detail-more {
    display: block;
    width: 100%;
    padding: 10px 12px;
    border: 0;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--accent-primary);
    font: inherit;
    text-align: left;
    cursor: pointer;
}

.search-detail-more:hover {
    background: var(--bg-surface-3);
}

.search-detail-more:focus-visible {
    outline: 2px solid var(--border-focus);
    outline-offset: -2px;
}

.search-detail-heading {
    padding: 10px 12px;
    color: var(--text-muted);
}

.outage-group-toggle {
    width: 16px;
    height: 20px;
    margin: -2px 6px -2px -4px;
    padding: 0;
    border: 0;
    border-radius: 3px;
    background: transparent;
    color: var(--text-muted);
    vertical-align: middle;
    cursor: pointer;
}

.outage-group-toggle svg {
    width: 14px;
    height: 14px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.outage-group-toggle[aria-expanded="true"] svg {
    transform: rotate(90deg);
}

.outage-group-toggle:hover {
    color: var(--text-primary);
}

.outage-group-toggle:focus-visible {
    outline: 2px solid var(--border-focus);
    outline-offset: 2px;
}

.outage-group-hidden-count {
    color: var(--text-muted);
    white-space: nowrap;
}

/* Search Dropdown & Search Hub Modal */
.search-dropdown {
    display: none;
    position: absolute;
    top: 42px;
    right: 0;
    width: 260px;
    background: rgba(30, 41, 59, 0.95);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-md);
    padding: 8px;
    backdrop-filter: blur(8px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.search-dropdown.open {
    display: flex;
    gap: 6px;
}

.search-dropdown input {
    flex: 1;
    padding: 6px 8px;
    background: var(--bg-surface-2);
    border: 1px solid var(--border-strong);
    color: #fff;
    border-radius: 4px;
    font-size: 0.85rem;
    outline: none;
}

.search-dropdown input:focus {
    border-color: var(--accent-primary);
}

.search-dropdown button {
    padding: 6px 10px;
    background: var(--accent-primary);
    border: none;
    color: white;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.85rem;
}

.search-dropdown button:hover {
    background: var(--accent-primary-hover);
}

.search-dropdown button.is-loading,
.search-hub-form button.is-loading {
    opacity: 0.85;
    cursor: wait;
}

.search-dropdown button.is-loading .spin,
.search-hub-form button.is-loading .spin {
    display: inline-block;
    animation: search-spin 0.8s linear infinite;
}

@keyframes search-spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.search-hub-modal .modal-content {
    max-width: 720px;
    margin: 6vh auto;
    display: flex;
    flex-direction: column;
    gap: 14px;
    max-height: 88vh;
}

.search-hub-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.search-hub-header h3 {
    margin: 0;
}

.search-hub-header .close-modal {
    float: none;
    flex: 0 0 auto;
    line-height: 1;
}

.search-hub-tabs {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.search-hub-tab {
    border: 1px solid var(--border-strong);
    background: var(--bg-surface-2);
    color: #cbd5e1;
    border-radius: var(--radius-pill);
    padding: 8px 14px;
    cursor: pointer;
    font-size: 0.88rem;
    font-weight: 600;
    transition: all 0.16s ease;
}

.search-hub-tab:hover {
    background: var(--bg-surface-3);
    color: #ffffff;
}

.search-hub-tab.active {
    background: var(--accent-primary-hover);
    border-color: var(--border-focus);
    color: #fff;
}

.search-hub-panel {
    display: none;
    min-height: 0;
}

.search-hub-panel.active {
    display: block;
}

.search-hub-form {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
    min-width: 0;
}

.search-hub-form input {
    flex: 1;
    min-width: 0;
    padding: 9px 12px;
    background: var(--bg-surface-2);
    border: 1px solid var(--border-strong);
    color: #fff;
    border-radius: var(--radius-sm);
    font-size: 0.92rem;
    outline: none;
    transition: border-color 0.16s ease;
}

.search-hub-form input:focus {
    border-color: var(--accent-primary);
}

.search-hub-form button {
    padding: 9px 14px;
    background: var(--accent-primary-hover);
    border: none;
    color: #fff;
    border-radius: var(--radius-sm);
    cursor: pointer;
    min-width: 52px;
    transition: background 0.16s ease;
}

.search-hub-form button:hover {
    background: var(--accent-primary-active);
}

.search-hub-panel .list-container {
    max-height: 52vh;
    margin-top: 0;
}

@media (max-width: 640px) {
    .search-hub-modal .modal-content {
        width: calc(100vw - 20px);
        max-width: none;
        margin: 10px auto;
        padding: 16px;
    }

    #floating-copyright {
        right: 10px;
        bottom: calc(18px + env(safe-area-inset-bottom, 0px));
        font-size: 12px;
    }

    .search-hub-form button {
        flex: 0 0 46px;
        width: 46px;
        min-width: 46px;
        padding: 9px 8px;
    }
}

/* Login Modal */
.login-card {
    width: min(92vw, 330px);
    margin: 0;
    padding: 18px;
    border-radius: var(--radius-lg);
    text-align: left;
    flex: 0 0 auto;
}

.login-card-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 10px;
}

.login-card-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
}

.login-card-subtitle {
    margin-bottom: 12px;
    font-size: 12.5px;
    color: var(--text-muted);
    line-height: 1.45;
}

.login-card .settings-input {
    margin-bottom: 9px;
}

.login-card .settings-save-btn {
    width: 100%;
    margin-top: 2px;
}

#login-modal {
    align-items: flex-start;
    justify-content: center;
    padding: 28px 12px;
}

/* Settings Modal */
.settings-tabs {
    display: flex;
    gap: 0;
    margin-top: 12px;
    margin-bottom: 14px;
    border-bottom: 1px solid var(--border-strong);
}

.settings-tab {
    flex: 1;
    padding: 10px 6px;
    min-width: 0;
    border: none;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.86rem;
    font-weight: 500;
    white-space: nowrap;
    border-bottom: 2px solid transparent;
    transition: all 0.18s ease;
}

.settings-tab:hover {
    color: var(--text-secondary);
}

.settings-tab.active {
    color: var(--accent-primary);
    border-bottom-color: var(--accent-primary);
    font-weight: 700;
}

.settings-section {
    display: none;
}

.settings-section.active {
    display: flex;
    flex: 1;
    flex-direction: column;
    gap: 12px;
    min-height: 0;
    overflow-y: auto;
    padding-right: 4px;
}

.settings-group {
    margin-bottom: 0;
    padding: 14px;
    background: rgba(15, 23, 42, 0.55);
    border: 1px solid var(--bg-surface-2);
    border-radius: var(--radius-lg);
    box-shadow: inset 0 1px 0 rgba(148, 163, 184, 0.04);
}

.settings-label {
    display: block;
    color: var(--text-muted);
    font-size: 0.8rem;
    margin-bottom: 4px;
}

.settings-label--title {
    font-weight: 700;
    color: var(--text-secondary);
    font-size: 0.86rem;
}

.settings-desc {
    color: var(--text-muted);
    font-size: 0.84rem;
    line-height: 1.45;
    margin-bottom: 10px;
}

.settings-radio-label {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 0.88rem;
    margin-top: 7px;
    cursor: pointer;
}

.settings-input {
    width: 100%;
    padding: 8px 10px;
    background: var(--bg-surface-2);
    border: 1px solid var(--border-strong);
    color: #fff;
    border-radius: var(--radius-sm);
    font-size: 0.88rem;
    transition: border-color 0.16s ease;
}

.settings-input:focus {
    border-color: var(--accent-primary);
    outline: none;
}

.settings-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.settings-toggle input[type='checkbox'] {
    width: 18px;
    height: 18px;
    accent-color: var(--accent-primary);
}

.settings-save-btn {
    width: 100%;
    padding: 10px 14px;
    background: var(--accent-primary-hover);
    border: none;
    color: white;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 700;
    transition: background 0.18s ease, transform 0.1s ease;
    margin-top: 8px;
}

.settings-save-btn:hover {
    background: var(--accent-primary-active);
}

.settings-save-btn.btn-slate {
    background: var(--bg-surface-2);
    margin-top: 0;
}

.settings-save-btn.btn-slate:hover {
    background: var(--bg-surface-3);
}

.settings-save-btn.btn-amber {
    background: #b45309;
    margin-top: 0;
}

.settings-save-btn.btn-amber:hover {
    background: #92400e;
}

.settings-save-btn.btn-teal {
    background: #0f766e;
    margin-top: 0;
}

.settings-save-btn.btn-teal:hover {
    background: #115e59;
}

/* Cloud Diagram List Items */
#cloud-diagram-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.cloud-file-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 14px;
    background: var(--bg-surface-2);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.94rem;
    font-weight: 600;
    cursor: pointer;
    text-align: left;
    transition: background 0.16s ease, border-color 0.16s ease, transform 0.12s ease;
}

.cloud-file-item:hover {
    background: rgba(59, 130, 246, 0.22);
    border-color: rgba(96, 165, 250, 0.55);
    transform: translateY(-1px);
}

/* Account Manager Rows */
.account-manager-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 88px 58px 58px 94px 76px 54px;
    gap: 8px;
    align-items: center;
    padding: 8px;
    border-radius: 8px;
    background: #0f172a;
}

.account-manager-row > * {
    min-width: 0;
}

.account-manager-guest-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 150px 76px;
    align-items: center;
    gap: 8px;
    margin-top: 14px;
    padding: 10px;
    background: #0f172a;
    border-radius: 8px;
}

@media (max-width: 640px) {
    .account-manager-row {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .account-manager-row > :first-child,
    .account-manager-guest-row > :first-child {
        grid-column: 1 / -1;
    }

    .account-manager-guest-row {
        grid-template-columns: minmax(0, 1fr) 76px;
    }
}

/* Backend Sync Warning Banner */
#backend-sync-auth-warning {
    position: fixed;
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%);
    max-width: calc(100% - 24px);
    z-index: 10000;
    padding: 9px 16px;
    border: 1px solid var(--color-warning);
    border-radius: var(--radius-md);
    background: var(--bg-surface-1);
    color: #fef3c7;
    font: inherit;
    font-size: 13px;
    cursor: pointer;
    box-shadow: 0 10px 28px rgba(2, 6, 23, 0.45);
}

/* ==========================================================================
   Shared UI Kit — Custom Dialogs (Alert / Confirm / Prompt) & Toast Stack
   ========================================================================== */

.ui-dialog-overlay {
    position: fixed;
    inset: 0;
    z-index: var(--z-dialog);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    background: rgba(2, 6, 23, 0.65);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    animation: ui-fade-in 0.14s ease-out;
}

.ui-dialog-card {
    width: min(440px, calc(100vw - 28px));
    max-height: calc(100vh - 32px);
    max-height: calc(100dvh - 32px);
    overflow-y: auto;
    flex-shrink: 0;
    background: rgba(15, 23, 42, 0.97);
    border: 1px solid rgba(148, 163, 184, 0.34);
    border-radius: var(--radius-xl);
    padding: 20px;
    box-shadow: 0 24px 64px rgba(2, 6, 23, 0.65), inset 0 1px 0 rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
    display: flex;
    flex-direction: column;
    gap: 12px;
    animation: ui-scale-in 0.15s cubic-bezier(0.16, 1, 0.3, 1);
}

.ui-dialog-card > * {
    flex-shrink: 0;
}

.ui-dialog-header {
    display: flex;
    align-items: center;
    gap: 10px;
}

.ui-dialog-icon {
    width: 34px;
    height: 34px;
    border-radius: var(--radius-md);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    background: rgba(59, 130, 246, 0.18);
    color: #60a5fa;
}

.ui-dialog-icon.is-warning {
    background: rgba(245, 158, 11, 0.18);
    color: #fbbf24;
}

.ui-dialog-icon.is-danger {
    background: rgba(239, 68, 68, 0.18);
    color: #f87171;
}

.ui-dialog-title {
    font-size: 15.5px;
    font-weight: 700;
    color: var(--text-primary);
}

.ui-dialog-message {
    font-size: 13.5px;
    line-height: 1.5;
    color: var(--text-secondary);
    white-space: pre-line;
    overflow-wrap: anywhere;
}

.ui-dialog-input {
    width: 100%;
    padding: 9px 11px;
    background: rgba(30, 41, 59, 0.95);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 14px;
    outline: none;
}

.ui-dialog-input:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.25);
}

.ui-dialog-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    margin-top: 4px;
}

/* Toast Notifications */
#ui-toast-stack {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    pointer-events: none;
    max-width: calc(100vw - 32px);
}

.ui-toast {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    border-radius: var(--radius-md);
    background: rgba(15, 23, 42, 0.65);
    border: 1px solid rgba(148, 163, 184, 0.28);
    color: var(--text-primary);
    font-size: 13px;
    font-weight: 400;
    line-height: 1.4;
    box-shadow: 0 8px 24px rgba(2, 6, 23, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.08);
    backdrop-filter: var(--ui-glass-blur);
    -webkit-backdrop-filter: var(--ui-glass-blur);
    opacity: 0;
    transform: translateY(-8px);
    transition: opacity 0.22s ease, transform 0.22s ease;
    pointer-events: auto;
    max-width: min(560px, calc(100vw - 32px));
}

.ui-toast.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.ui-toast.is-error {
    border-color: rgba(239, 68, 68, 0.45);
    color: #fca5a5;
}

@keyframes ui-fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes ui-scale-in {
    from { opacity: 0; transform: scale(0.96); }
    to { opacity: 1; transform: scale(1); }
}

/* ==========================================================================
   Report Module (report.js) — 2-Source Comparison
   ========================================================================== */

.report-upload-area {
    border: 2px dashed var(--border-strong);
    border-radius: 10px;
    padding: 40px;
    text-align: center;
    cursor: pointer;
    transition: all 0.25s ease;
    color: var(--text-muted);
}

.report-upload-area:hover,
.report-upload-area.dragover {
    border-color: var(--accent-primary);
    background: rgba(59, 130, 246, 0.08);
    color: #60a5fa;
}

.report-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 10px;
    table-layout: fixed;
}

.report-table th {
    background: var(--bg-surface-2);
    color: var(--text-secondary);
    padding: 12px 14px;
    text-align: left;
    font-size: 0.92rem;
    font-weight: 700;
    position: sticky;
    top: 0;
    z-index: 2;
}

.report-table-scroll {
    scrollbar-gutter: stable;
}

.report-table th:first-child {
    border-right: 3px solid var(--border-strong);
    border-bottom: 2px solid #fbbf24;
}

.report-table th:last-child {
    border-bottom: 2px solid #fb923c;
}

.report-table td {
    padding: 10px 14px;
    border-bottom: 1px solid var(--bg-surface-1);
    font-size: 0.9rem;
    vertical-align: top;
}

.report-table td:first-child {
    border-right: 3px solid var(--border-strong);
}

.report-table tr:hover {
    background: rgba(59, 130, 246, 0.06);
}

.report-source-label {
    font-size: 0.75rem;
    color: #60a5fa;
    margin-bottom: 3px;
    letter-spacing: 0.3px;
}

.report-point-name {
    font-weight: 700;
    font-size: 0.95rem;
    color: #f1f5f9;
    text-decoration: underline;
    cursor: pointer;
}

.report-point {
    color: #fbbf24;
    font-weight: 700;
    text-decoration: underline;
    cursor: pointer;
}

.report-point.diagram {
    color: #4ade80;
}

/* ==========================================================================
   Operation Ticket Module (phuongthuc.js & thaotac.js)
   ========================================================================== */

#app.thaotac-layout {
    display: flex;
    align-items: stretch;
}

#app.thaotac-layout #legacy-workspace {
    position: relative;
    flex: 0 0 55%;
    width: 55%;
    min-width: 0;
    height: 100vh;
    overflow: hidden;
    background: var(--bg-canvas);
    border-right: 1px solid rgba(148, 163, 184, 0.24);
}

#tt-operation-hint {
    position: absolute;
    left: 12px;
    right: 12px;
    bottom: 44px;
    padding: 10px 14px;
    border-radius: 10px;
    background: rgba(15, 23, 42, 0.78);
    color: rgba(248, 250, 252, 0.92);
    font-size: 13px;
    line-height: 1.45;
    backdrop-filter: blur(6px);
    pointer-events: auto;
    user-select: text;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
    word-break: break-word;
    max-height: 38vh;
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.22);
    z-index: 4;
}

#thaotac-panel {
    flex: 0 0 45%;
    width: 45%;
    min-width: 0;
    height: 100vh;
    overflow: auto;
    background: #eef2f7;
    color: #1e293b;
    padding: 0 0 24px;
}

#app.thaotac-layout.thaotac-panel-hidden #legacy-workspace {
    flex-basis: 100%;
    width: 100%;
    border-right: 0;
}

#app.thaotac-layout.thaotac-panel-hidden #thaotac-panel {
    display: none;
}

#app.thaotac-layout.thaotac-panel-hidden #tt-operation-hint {
    display: none !important;
}

.tt-paper {
    width: min(100%, 1080px);
    margin: 0 auto;
    background: #f8fafc;
    min-height: 100vh;
    box-shadow: inset 1px 0 0 rgba(148, 163, 184, 0.18);
}

.tt-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 10px 14px 0;
    position: sticky;
    top: 0;
    z-index: 5;
    background: rgba(248, 250, 252, 0.96);
}

.tt-heading {
    font-size: 19px;
    font-weight: 700;
    color: #1e293b;
}

.tt-actions {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    justify-content: flex-end;
    align-items: center;
}

.tt-ticket-inline {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.tt-ticket-inline label {
    font-size: 13px;
    font-weight: 700;
    color: #334155;
}

.tt-btn {
    border: 0;
    border-radius: 6px;
    color: #fff;
    padding: 8px 14px;
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
    line-height: 1.2;
}

.tt-btn.blue { background: #2563eb; }
.tt-btn.green { background: #0f9f6e; }
.tt-btn.gray { background: #64748b; }

.tt-section {
    margin: 0 14px 12px;
    background: #fff;
    border: 1px solid #e2e8f0;
    padding: 12px 14px;
}

.tt-procedure-head {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 10px;
    align-items: end;
    margin-bottom: 10px;
}

.tt-procedure-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: 280px;
    overflow: auto;
}

.tt-procedure-item {
    border: 1px solid #dbe3ef;
    background: #f8fafc;
    padding: 10px 12px;
    cursor: pointer;
    border-radius: 4px;
}

.tt-procedure-item.active {
    border-color: #2563eb;
    background: #eff6ff;
}

.tt-procedure-item-title {
    font-size: 13px;
    font-weight: 700;
    color: #1e293b;
}

.tt-procedure-item-meta {
    font-size: 12px;
    color: #64748b;
    margin-top: 4px;
}

.tt-modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.45);
    z-index: var(--z-tt-modal);
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.tt-modal.open {
    display: flex;
}

.tt-modal-box {
    width: min(900px, 96vw);
    max-height: 85vh;
    overflow: auto;
    background: #fff;
    border-radius: 10px;
    border: 1px solid #cbd5e1;
    box-shadow: 0 24px 80px rgba(15, 23, 42, 0.28);
    padding: 16px;
}

.tt-modal-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 12px;
}

.tt-modal-title {
    font-size: 16px;
    font-weight: 700;
    color: #1e293b;
}

.tt-modal-close {
    border: 0;
    background: #e2e8f0;
    color: #334155;
    width: 34px;
    height: 34px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 18px;
}

.tt-modal-table {
    width: 100%;
    border-collapse: collapse;
    table-layout: fixed;
}

.tt-modal-table th,
.tt-modal-table td {
    border: 1px solid #cbd5e1;
    padding: 8px 10px;
    vertical-align: top;
}

.tt-modal-table th {
    background: #f8fafc;
    font-size: 12px;
    font-weight: 700;
}

.tt-modal-device {
    white-space: pre-line;
    font-size: 13px;
    line-height: 1.45;
}

.tt-modal-select {
    border: 0;
    background: #2563eb;
    color: #fff;
    border-radius: 6px;
    padding: 7px 12px;
    font-size: 12px;
    font-weight: 700;
    cursor: pointer;
}

/* Step Templates (thaotac.js) */
.tt-template-list { display: flex; flex-direction: column; gap: 12px; }
.tt-template-card { border: 1px solid #dbe3ef; border-radius: 8px; overflow: hidden; background: #f8fafc; }
.tt-template-card + .tt-template-card { margin-top: 10px; }
.tt-template-stage { height: 620px; min-height: 620px; overflow-y: auto; }
.tt-template-tabs { display: flex; gap: 8px; margin-bottom: 12px; }
.tt-template-tab { border: 1px solid #bfdbfe; background: #eff6ff; color: #1d4ed8; border-radius: 999px; padding: 6px 12px; font-size: 13px; font-weight: 700; cursor: pointer; }
.tt-template-tab.active { background: #2563eb; color: #fff; border-color: #2563eb; }
.tt-template-toggle { width: 100%; border: 0; background: #eff6ff; color: #1e3a8a; text-align: left; padding: 10px 14px; font-size: 14px; font-weight: 700; cursor: pointer; }
.tt-template-toggle:hover { background: #dbeafe; }
.tt-template-panel { display: none; padding: 12px; background: #fff; border-top: 1px solid #dbe3ef; }
.tt-template-panel.open { display: block; }
.tt-template-line { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; line-height: 1.5; }
.tt-template-line + .tt-template-line { margin-top: 6px; }
.tt-template-line.bold { font-weight: 700; }
.tt-template-line.italic { font-style: italic; }
.tt-template-inline-input { min-width: 140px; max-width: 100%; border: 1px solid #cbd5e1; border-radius: 4px; padding: 4px 6px; font: inherit; }
.tt-template-cell-input { width: 100%; border: 1px solid #cbd5e1; border-radius: 4px; padding: 6px 8px; font: inherit; }
.tt-template-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 12px; }
.tt-template-station-table td { cursor: pointer; }
.tt-template-station-table tr:hover td { background: #eff6ff; }
.tt-template-empty { padding: 10px; color: #64748b; text-align: center; }

.tt-form-wrap { display: flex; flex-direction: column; gap: 10px; }
.tt-form-row { display: grid; grid-template-columns: 180px minmax(0, 1fr); gap: 10px; align-items: center; }
.tt-form-label { font-size: 13px; font-weight: 700; color: #334155; }
.tt-input, .tt-textarea, .tt-table input, .tt-table textarea { width: 100%; border: 1px solid #cbd5e1; background: #fff; color: #1e293b; font: inherit; padding: 7px 8px; border-radius: 3px; }
.tt-form-input { background: #fff7bf; border-color: #d6b84f; font-weight: 700; }
.tt-form-textarea { min-height: 92px; background: #fff7bf; border-color: #d6b84f; font-weight: 700; }
#tt-form-purpose.tt-form-textarea { min-height: 140px; }
.tt-form-textarea-short { min-height: 52px; }
.tt-inline-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.tt-textarea { min-height: 88px; resize: vertical; }
.tt-subtitle { margin: 0 0 8px; font-size: 13px; font-weight: 700; color: #334155; }
.tt-table { width: 100%; border-collapse: collapse; table-layout: fixed; background: #fff; }
.tt-table th, .tt-table td { border: 1px solid #000; vertical-align: top; }
.tt-table th { padding: 6px 4px; font-size: 12px; font-weight: 700; text-align: center; color: #1e293b; background: #fff; }
.tt-table td input, .tt-table td textarea { border: 0; min-height: 28px; border-radius: 0; padding: 4px 6px; background: transparent; }
.tt-table td textarea { min-height: 44px; }
.tt-add { width: 100%; margin-top: 10px; padding: 9px 10px; border: 1px dashed #b7c4d7; background: transparent; color: #64748b; font-size: 13px; cursor: pointer; }
.tt-split-actions { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.tt-dates { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-bottom: 10px; }
.tt-signatures { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; margin-bottom: 10px; }
.tt-sig-label { text-align: center; font-size: 13px; font-weight: 700; color: #334155; margin: 8px 0; }
.tt-status { font-size: 12px; color: #64748b; margin-top: 6px; }

@media (max-width: 900px) {
    #app.thaotac-layout { flex-direction: column; }
    #app.thaotac-layout #legacy-workspace, #thaotac-panel { width: 100%; flex-basis: auto; }
    #thaotac-panel, #app.thaotac-layout #legacy-workspace { height: auto; min-height: 50vh; }
    #legacy-workspace .top-bar-icons { position: fixed; right: 10px; }
    .tt-toolbar, .tt-form-row, .tt-dates, .tt-signatures { grid-template-columns: 1fr; display: grid; }
    .tt-actions { justify-content: flex-start; }
}

@media print {
    body > *:not(#app) { display: none !important; }
    #legacy-workspace, #app > aside, #app > main, .top-bar-icons { display: none !important; }
    #app, #thaotac-panel, .tt-paper {
        width: 100% !important;
        flex: 1 1 auto !important;
        min-width: 0 !important;
        height: auto !important;
        overflow: visible !important;
        background: #fff !important;
        box-shadow: none !important;
    }
    .tt-toolbar .tt-actions { display: none !important; }
}

@keyframes tt-rec-blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.45; }
}

.tt-add.tt-recording {
    border-color: #dc2626;
    color: #dc2626;
    background: #fef2f2;
    font-weight: 700;
    animation: tt-rec-blink 1s ease-in-out infinite;
}

.tt-step-actions { display: flex; gap: 2px; justify-content: center; align-items: center; padding: 4px 0; }
.tt-step-actions.vertical { flex-direction: column; gap: 4px; padding: 2px 0; }
.tt-step-btn { border: 1px solid #cbd5e1; background: #fff; cursor: pointer; font-size: 16px; line-height: 1; width: 22px; height: 22px; padding: 0; border-radius: 4px; color: #475569; font-weight: 700; display: inline-flex; align-items: center; justify-content: center; }
.tt-step-btn:hover { background: #e2e8f0; color: #1e293b; border-color: #94a3b8; }
.tt-step-btn.del:hover { background: #fee2e2; color: #dc2626; }
.tt-mode-select { width: 100%; border: 1px dashed #b7c4d7; border-radius: 2px; padding: 4px; margin-bottom: 6px; font-size: 12px; color: #64748b; background: transparent; cursor: pointer; }
.tt-mode-select:focus { outline: none; border-color: #3b82f6; }
.tt-step-rich-preview { min-height: 44px; padding: 4px 6px; white-space: pre-wrap; line-height: 1.5; cursor: text; }
.tt-step-rich-preview .tt-rich-line + .tt-rich-line { margin-top: 4px; }
.tt-step-rich-preview .tt-rich-bold { font-weight: 700; }
.tt-step-rich-preview .tt-rich-italic { font-style: italic; }
.tt-step-rich-editor { display: none; }
.tt-step-rich-editor.is-editing { display: block; }
.tt-step-rich-editor.is-editing + .tt-step-rich-preview { display: none; }

.tt-table tr.tt-last-in-group td { border-bottom: 2px solid #000 !important; }
.tt-table td.tt-group-cell { border-bottom: 2px solid #000 !important; border-left: 2px solid #000 !important; border-right: 2px solid #000 !important; }
.tt-table tr:first-child td { border-top: 2px solid #000 !important; }
.tt-table tr td:first-child { border-left: 2px solid #000 !important; }
.tt-italic { font-style: italic !important; }