/* =====================================================
   PGCasa BO — Design System v2.0
   Premium modern UI with light/dark mode
   ===================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* ─── Design Tokens ─── */
:root {
    /* Primary */
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --primary-light: rgba(99, 102, 241, 0.12);
    --primary-ghost: rgba(99, 102, 241, 0.06);

    /* Accent */
    --accent: #06b6d4;
    --accent-hover: #0891b2;

    /* Semantic */
    --success: #10b981;
    --success-light: rgba(16, 185, 129, 0.12);
    --warning: #f59e0b;
    --warning-light: rgba(245, 158, 11, 0.12);
    --danger: #ef4444;
    --danger-light: rgba(239, 68, 68, 0.12);
    --info: #3b82f6;
    --info-light: rgba(59, 130, 246, 0.12);

    /* Surfaces */
    --bg-body: #f8fafc;
    --bg-surface: #ffffff;
    --bg-surface-hover: #f1f5f9;
    --bg-elevated: #ffffff;
    --bg-inset: #f1f5f9;
    --bg-overlay: rgba(15, 23, 42, 0.4);

    /* Text */
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --text-on-primary: #ffffff;
    --text-link: var(--primary);

    /* Borders */
    --border: #e2e8f0;
    --border-hover: #cbd5e1;
    --border-focus: var(--primary);

    /* Shadows */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
    --shadow-focus: 0 0 0 3px rgba(99, 102, 241, 0.25);

    /* Radius */
    --radius-sm: 6px;
    --radius: 8px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 20px;
    --radius-full: 9999px;

    /* Transitions */
    --ease: cubic-bezier(0.4, 0, 0.2, 1);
    --duration-fast: 150ms;
    --duration: 200ms;
    --duration-slow: 300ms;

    /* Spacing */
    --topbar-h: 60px;
    --sidebar-w: 420px;
}

/* ─── Dark Mode ─── */
[data-theme="dark"] {
    --primary: #818cf8;
    --primary-hover: #6366f1;
    --primary-light: rgba(129, 140, 248, 0.15);
    --primary-ghost: rgba(129, 140, 248, 0.08);

    --accent: #22d3ee;
    --accent-hover: #06b6d4;

    --success: #34d399;
    --success-light: rgba(52, 211, 153, 0.15);
    --warning: #fbbf24;
    --warning-light: rgba(251, 191, 36, 0.15);
    --danger: #f87171;
    --danger-light: rgba(248, 113, 113, 0.15);
    --info: #60a5fa;
    --info-light: rgba(96, 165, 250, 0.15);

    --bg-body: #0f172a;
    --bg-surface: #1e293b;
    --bg-surface-hover: #334155;
    --bg-elevated: #1e293b;
    --bg-inset: #0f172a;
    --bg-overlay: rgba(0, 0, 0, 0.6);

    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --text-on-primary: #ffffff;

    --border: #334155;
    --border-hover: #475569;

    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.35), 0 2px 4px -2px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -4px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
}


/* ─── Reset & Base ─── */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-body);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: var(--text-link);
    text-decoration: none;
    transition: color var(--duration) var(--ease);
}

a:hover {
    color: var(--primary-hover);
}

::selection {
    background: var(--primary-light);
    color: var(--primary-hover);
}

/* ─── Typography ─── */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--text-primary);
}

h1 { font-size: 1.875rem; letter-spacing: -0.025em; }
h2 { font-size: 1.5rem; letter-spacing: -0.02em; }
h3 { font-size: 1.25rem; letter-spacing: -0.015em; }
h4 { font-size: 1.125rem; }
h5 { font-size: 1rem; }

.text-muted { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }
.text-sm { font-size: 0.875rem; }
.text-xs { font-size: 0.75rem; }
.text-center { text-align: center; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }


/* ─── Layout Utilities ─── */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.gap-4 { gap: 4px; }
.gap-8 { gap: 8px; }
.gap-10 { gap: 10px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.gap-20 { gap: 20px; }
.gap-24 { gap: 24px; }
.flex-1 { flex: 1; }
.shrink-0 { flex-shrink: 0; }
.w-full { width: 100%; }
.hidden { display: none !important; }

.grid { display: grid; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.mt-4 { margin-top: 4px; }
.mt-8 { margin-top: 8px; }
.mt-12 { margin-top: 12px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mb-4 { margin-bottom: 4px; }
.mb-8 { margin-bottom: 8px; }
.mb-12 { margin-bottom: 12px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.p-12 { padding: 12px; }
.p-16 { padding: 16px; }
.p-20 { padding: 20px; }
.p-24 { padding: 24px; }


/* ─── Top Bar ─── */
.topbar {
    height: var(--topbar-h);
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border);
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.topbar-brand {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    gap: 8px;
}

.topbar-brand svg,
.topbar-brand img {
    width: 24px;
    height: 24px;
}

.topbar-nav {
    display: flex;
    align-items: center;
    gap: 4px;
}

.topbar-nav .nav-link {
    padding: 6px 14px;
    border-radius: var(--radius);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--duration) var(--ease);
    white-space: nowrap;
}

.topbar-nav .nav-link:hover {
    background: var(--bg-surface-hover);
    color: var(--text-primary);
}

.topbar-nav .nav-link.active {
    background: var(--primary-light);
    color: var(--primary);
}

.topbar-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* ─── Theme Toggle ─── */
.theme-toggle {
    width: 36px;
    height: 36px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-surface);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    transition: all var(--duration) var(--ease);
}

.theme-toggle:hover {
    border-color: var(--border-hover);
    color: var(--text-primary);
    background: var(--bg-surface-hover);
}


/* ─── App Layout (sidebar + main) ─── */
.app-layout {
    display: grid;
    grid-template-columns: var(--sidebar-w) 1fr;
    height: calc(100vh - var(--topbar-h));
    overflow: hidden;
}

.app-layout-3col {
    display: grid;
    grid-template-columns: 260px 1fr 280px;
    height: calc(100vh - var(--topbar-h));
    overflow: hidden;
}

.sidebar {
    background: var(--bg-surface);
    border-right: 1px solid var(--border);
    overflow-y: auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.sidebar-header h3 {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    font-weight: 600;
}

.main-content {
    overflow-y: auto;
    padding: 32px;
    background: var(--bg-body);
}

.panel-right {
    background: var(--bg-surface);
    border-left: 1px solid var(--border);
    overflow-y: auto;
    padding: 20px;
}


/* ─── Cards ─── */
.card {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--duration) var(--ease);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-body {
    padding: 20px;
}

.card-footer {
    padding: 12px 20px;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
}

/* Glass Card (for login etc.) */
.glass-card {
    background: rgba(255, 255, 255, 0.75);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
}

[data-theme="dark"] .glass-card {
    background: rgba(30, 41, 59, 0.8);
    border-color: rgba(255, 255, 255, 0.08);
}

/* Stat Cards */
.stat-card {
    padding: 20px;
    border-radius: var(--radius-lg);
    background: var(--bg-surface);
    border: 1px solid var(--border);
    transition: all var(--duration) var(--ease);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.stat-card .stat-value {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1;
    color: var(--text-primary);
}

.stat-card .stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 4px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.stat-card .stat-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}


/* ─── Buttons ─── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 0.875rem;
    font-weight: 500;
    line-height: 1.4;
    cursor: pointer;
    border: 1px solid var(--border);
    background: var(--bg-surface);
    color: var(--text-primary);
    transition: all var(--duration) var(--ease);
    white-space: nowrap;
    text-decoration: none;
    user-select: none;
}

.btn:hover {
    background: var(--bg-surface-hover);
    border-color: var(--border-hover);
}

.btn:focus-visible {
    outline: none;
    box-shadow: var(--shadow-focus);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

.btn-primary {
    background: var(--primary);
    color: var(--text-on-primary);
    border-color: var(--primary);
}

.btn-primary:hover {
    background: var(--primary-hover);
    border-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-danger {
    background: var(--bg-surface);
    color: var(--danger);
    border-color: var(--danger);
}

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

.btn-success {
    background: var(--success);
    color: var(--text-on-primary);
    border-color: var(--success);
}

.btn-success:hover {
    background: #059669;
    border-color: #059669;
}

.btn-ghost {
    background: transparent;
    border-color: transparent;
    color: var(--text-secondary);
}

.btn-ghost:hover {
    background: var(--bg-surface-hover);
    color: var(--text-primary);
}

.btn-sm {
    padding: 5px 10px;
    font-size: 0.8rem;
    border-radius: var(--radius-sm);
}

.btn-lg {
    padding: 12px 24px;
    font-size: 1rem;
}

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    border-radius: var(--radius);
}

.btn-icon.btn-sm {
    width: 28px;
    height: 28px;
}


/* ─── Form Elements ─── */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    letter-spacing: 0.01em;
}

.form-input,
input[type="text"],
input[type="password"],
input[type="email"],
input[type="number"],
input[type="search"],
select,
textarea {
    width: 100%;
    padding: 9px 13px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-surface);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.875rem;
    line-height: 1.5;
    transition: all var(--duration) var(--ease);
}

.form-input:hover,
input[type="text"]:hover,
input[type="password"]:hover,
input[type="email"]:hover,
input[type="number"]:hover,
input[type="search"]:hover,
select:hover,
textarea:hover {
    border-color: var(--border-hover);
}

.form-input:focus,
input[type="text"]:focus,
input[type="password"]:focus,
input[type="email"]:focus,
input[type="number"]:focus,
input[type="search"]:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: var(--shadow-focus);
}

.form-input::placeholder,
input::placeholder,
textarea::placeholder {
    color: var(--text-muted);
}

textarea {
    min-height: 80px;
    resize: vertical;
}

select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%2394a3b8' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

/* Checkbox */
input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--primary);
    cursor: pointer;
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.checkbox-group label {
    margin-bottom: 0;
    font-size: 0.875rem;
    cursor: pointer;
}

/* Search Input */
.search-input {
    position: relative;
}

.search-input input {
    padding-left: 36px;
}

.search-input .search-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 0.875rem;
    pointer-events: none;
}

/* File Upload */
.file-upload {
    border: 2px dashed var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
    text-align: center;
    cursor: pointer;
    transition: all var(--duration) var(--ease);
    color: var(--text-muted);
}

.file-upload:hover {
    border-color: var(--primary);
    background: var(--primary-ghost);
    color: var(--primary);
}


/* ─── Badges ─── */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    line-height: 1.6;
}

.badge-primary {
    background: var(--primary-light);
    color: var(--primary);
}

.badge-success {
    background: var(--success-light);
    color: var(--success);
}

.badge-warning {
    background: var(--warning-light);
    color: var(--warning);
}

.badge-danger {
    background: var(--danger-light);
    color: var(--danger);
}

.badge-muted {
    background: var(--bg-inset);
    color: var(--text-muted);
}

.badge-info {
    background: var(--info-light);
    color: var(--info);
}


/* ─── Tables ─── */
.table-wrapper {
    overflow-x: auto;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
}

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

thead th {
    padding: 10px 16px;
    background: var(--bg-inset);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    text-align: left;
    border-bottom: 1px solid var(--border);
}

tbody td {
    padding: 12px 16px;
    font-size: 0.875rem;
    border-bottom: 1px solid var(--border);
    color: var(--text-primary);
}

tbody tr:last-child td {
    border-bottom: none;
}

tbody tr:hover {
    background: var(--bg-surface-hover);
}


/* ─── Tree Component ─── */
.tree-container {
    font-size: 0.875rem;
}

.tree-list {
    list-style: none;
    padding-left: 0;
}

.tree-list .tree-list {
    padding-left: 20px;
}

.tree-item {
    margin: 1px 0;
}

.tree-item-content {
    display: flex;
    align-items: center;
    padding: 5px 10px;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all var(--duration-fast) var(--ease);
    gap: 6px;
    user-select: none;
}

.tree-item-content:hover {
    background: var(--primary-ghost);
}

.tree-item-content.selected {
    background: var(--primary-light);
    color: var(--primary);
}

.tree-item-content.selected .tree-label {
    font-weight: 600;
}

.tree-toggle {
    width: 18px;
    height: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: transform var(--duration-fast) var(--ease);
    color: var(--text-muted);
    font-size: 0.65rem;
}

.tree-toggle::before {
    content: '▶';
}

.tree-item.expanded > .tree-item-content > .tree-toggle {
    transform: rotate(90deg);
}

.tree-item.no-children > .tree-item-content > .tree-toggle {
    visibility: hidden;
}

.tree-item > .tree-list {
    display: none;
}

.tree-item.expanded > .tree-list {
    display: block;
    animation: fadeSlideIn var(--duration) var(--ease);
}

.tree-icon {
    width: 18px;
    height: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 0.8rem;
}

.tree-icon.icon-macrocat { color: #f59e0b; }
.tree-icon.icon-cat { color: var(--primary); }
.tree-icon.icon-tag { color: var(--success); }
.tree-icon.icon-alias { color: var(--text-muted); }

.tree-label {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.tree-badge {
    font-size: 0.65rem;
    padding: 1px 5px;
    border-radius: var(--radius-full);
    background: var(--bg-inset);
    color: var(--text-muted);
    font-weight: 500;
    flex-shrink: 0;
}

.tree-item.disabled > .tree-item-content {
    opacity: 0.45;
}

.tree-item.drag-over > .tree-item-content {
    background: var(--primary-light);
    box-shadow: inset 0 0 0 2px var(--primary);
}


/* ─── Flow Builder ─── */
.flow-layout {
    display: grid;
    grid-template-columns: 400px 1fr 280px;
    height: calc(100vh - var(--topbar-h));
    overflow: hidden;
}

.flow-sidebar {
    background: var(--bg-surface);
    border-right: 1px solid var(--border);
    padding: 16px;
    overflow-y: auto;
}

.flow-canvas {
    background: var(--bg-body);
    overflow-y: auto;
    position: relative;
    display: flex;
    flex-direction: column;
}

.flow-header {
    display: none;
    justify-content: space-between;
    align-items: center;
    padding: 12px 24px;
    border-bottom: 1px solid var(--border);
    background: var(--bg-surface);
    flex-shrink: 0;
}

.flow-header h3 {
    font-size: 0.95rem;
    font-weight: 600;
}

/* Step Tabs */
.step-tabs {
    display: flex;
    align-items: center;
    gap: 2px;
    padding: 8px 16px;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border);
    flex-wrap: wrap;
    margin: -32px -32px 16px -32px;
    padding: 12px 32px;
}

.step-tab {
    padding: 6px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius) var(--radius) 0 0;
    background: var(--bg-body);
    cursor: pointer;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--duration) var(--ease);
    border-bottom: 2px solid transparent;
}

.step-tab:hover {
    background: var(--bg-surface);
    color: var(--text-primary);
}

.step-tab.active {
    background: var(--bg-surface);
    color: var(--primary);
    border-bottom-color: var(--primary);
    font-weight: 600;
}

.step-tab-add {
    border-style: dashed;
    color: var(--text-secondary);
    font-size: 1rem;
    padding: 6px 12px;
}

.step-tab-add:hover {
    color: var(--primary);
    border-color: var(--primary);
}

.step-actions {
    margin-left: auto;
    display: flex;
    gap: 6px;
}

.btn-danger-text {
    color: var(--danger) !important;
}

.step-header {
    display: flex;
    gap: 16px;
    margin-bottom: 16px;
    padding: 12px 16px;
    background: var(--bg-surface);
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.canvas-dropzone {
    padding: 32px;
    flex: 1;
}

.flow-tools {
    background: var(--bg-surface);
    border-left: 1px solid var(--border);
    padding: 16px;
    overflow-y: auto;
}

/* Flow list */
.flow-list {
    list-style: none;
}

.flow-item {
    padding: 10px 12px;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 0.875rem;
    transition: all var(--duration-fast) var(--ease);
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 2px;
}

.flow-item:hover {
    background: var(--bg-surface-hover);
}

.flow-item.active {
    background: var(--primary-light);
    color: var(--primary);
    font-weight: 600;
}

/* Tool palette */
.tools-palette {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-top: 8px;
}

.tools-palette-title {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    font-weight: 600;
    margin-top: 20px;
    margin-bottom: 4px;
}

.tool-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 9px 12px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--bg-surface);
    cursor: grab;
    user-select: none;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--duration-fast) var(--ease);
}

.tool-item:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-ghost);
}

.tool-item:active {
    cursor: grabbing;
    transform: scale(0.98);
}

.tool-item .tool-icon {
    font-size: 1rem;
}

/* Canvas items */
.canvas-item {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    padding: 16px;
    margin-bottom: 10px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xs);
    cursor: grab;
    transition: all var(--duration) var(--ease);
    position: relative;
}

.canvas-item:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-sm);
}

.canvas-item:active {
    cursor: grabbing;
}

.canvas-item.dragging {
    opacity: 0.5;
    transform: rotate(1deg);
}

.canvas-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border);
}

.canvas-item-title {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 6px;
}

.canvas-item-actions {
    display: flex;
    align-items: center;
    gap: 4px;
}

.canvas-item-actions .canvas-clone,
.canvas-item-actions .canvas-delete {
    opacity: 0.4;
    transition: opacity var(--duration) var(--ease);
}

.canvas-item:hover .canvas-clone,
.canvas-item:hover .canvas-delete {
    opacity: 1;
}

.canvas-item-actions .canvas-delete:hover {
    color: var(--danger);
}

.canvas-item-actions .canvas-link-taxo {
    opacity: 0.4;
    transition: opacity var(--duration) var(--ease);
}

.canvas-item:hover .canvas-link-taxo {
    opacity: 1;
}

.canvas-item-actions .canvas-link-taxo:hover {
    color: var(--primary);
}

.taxo-linker-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 4px 8px;
    border-radius: var(--radius);
    cursor: pointer;
    transition: background var(--duration) var(--ease);
}

.taxo-linker-item:hover {
    background: var(--bg-surface);
}

.taxo-linker-item input[type="checkbox"] {
    flex-shrink: 0;
}

.btn-xs {
    padding: 2px 6px;
    font-size: 0.75rem;
}

.w-full { width: 100%; }

.canvas-item-type {
    font-size: 0.7rem;
    background: var(--bg-inset);
    color: var(--text-muted);
    padding: 2px 8px;
    border-radius: var(--radius-full);
}

.canvas-item-fields {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.canvas-item-config {
    background: var(--bg-inset);
    padding: 12px;
    border-radius: var(--radius);
    border: 1px dashed var(--border);
    margin-top: 12px;
}

/* Drop zone */
.canvas-dropzone.drag-over {
    background: var(--primary-ghost);
    border: 2px dashed var(--primary);
    border-radius: var(--radius-lg);
}

/* Trash zone */
.trash-zone {
    margin-top: 24px;
    padding: 16px;
    border: 2px dashed var(--border);
    border-radius: var(--radius-lg);
    text-align: center;
    color: var(--text-muted);
    transition: all var(--duration) var(--ease);
    font-size: 0.85rem;
}

.trash-zone .trash-icon {
    font-size: 1.5rem;
    margin-bottom: 4px;
}

.trash-zone.drag-over {
    border-color: var(--danger);
    background: var(--danger-light);
    color: var(--danger);
    transform: scale(1.02);
}


/* ─── Edit Panel ─── */
/* Visibility controlled by Alpine.js x-show, not CSS */
.edit-panel {
    animation: fadeIn var(--duration) var(--ease);
}

.edit-panel-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 8px;
}

.edit-panel-actions {
    display: flex;
    gap: 8px;
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
}

/* Empty state */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--text-muted);
    gap: 12px;
    text-align: center;
    padding: 40px;
}

.empty-state .empty-icon {
    font-size: 3rem;
    opacity: 0.5;
}

.empty-state h3 {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.empty-state p {
    font-size: 0.875rem;
    max-width: 300px;
}


/* ─── Toast Notifications ─── */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 8px;
    pointer-events: none;
}

.toast {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 12px 16px;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.875rem;
    min-width: 300px;
    max-width: 450px;
    pointer-events: auto;
    animation: toastIn var(--duration-slow) var(--ease);
    transition: all var(--duration) var(--ease);
}

.toast.toast-out {
    animation: toastOut var(--duration) var(--ease) forwards;
}

.toast-icon {
    font-size: 1.1rem;
    flex-shrink: 0;
}

.toast-message {
    flex: 1;
}

.toast-close {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
    font-size: 1rem;
    padding: 2px;
    line-height: 1;
    flex-shrink: 0;
}

.toast-close:hover {
    color: var(--text-primary);
}

.toast.toast-success { border-left: 3px solid var(--success); }
.toast.toast-success .toast-icon { color: var(--success); }

.toast.toast-error { border-left: 3px solid var(--danger); }
.toast.toast-error .toast-icon { color: var(--danger); }

.toast.toast-warning { border-left: 3px solid var(--warning); }
.toast.toast-warning .toast-icon { color: var(--warning); }

.toast.toast-info { border-left: 3px solid var(--info); }
.toast.toast-info .toast-icon { color: var(--info); }


/* ─── Modal ─── */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: var(--bg-overlay);
    z-index: 9000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    animation: fadeIn var(--duration-fast) var(--ease);
}

.modal {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 480px;
    animation: scaleIn var(--duration) var(--ease);
}

.modal-header {
    padding: 20px 24px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header h3 {
    font-size: 1.15rem;
}

.modal-body {
    padding: 16px 24px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.modal-footer {
    padding: 0 24px 20px;
    display: flex;
    justify-content: flex-end;
    gap: 8px;
}


/* ─── Login Page ─── */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    background-size: 400% 400%;
    animation: gradientShift 8s ease infinite;
    padding: 24px;
}

[data-theme="dark"] .login-page {
    background: linear-gradient(135deg, #1e1b4b 0%, #312e81 50%, #4c1d95 100%);
    background-size: 400% 400%;
    animation: gradientShift 8s ease infinite;
}

.login-card {
    width: 100%;
    max-width: 400px;
    padding: 40px;
    text-align: center;
}

.login-card h1 {
    font-size: 1.5rem;
    margin-bottom: 4px;
}

.login-card .login-subtitle {
    color: var(--text-muted);
    margin-bottom: 28px;
    font-size: 0.9rem;
}

.login-card .login-logo {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.login-error {
    background: var(--danger-light);
    color: var(--danger);
    padding: 10px 14px;
    border-radius: var(--radius);
    margin-bottom: 16px;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.instance-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-top: 8px;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.instance-toggle label {
    cursor: pointer;
}


/* ─── Alerts / Messages ─── */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius);
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
}

.alert-success {
    background: var(--success-light);
    color: var(--success);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.alert-error {
    background: var(--danger-light);
    color: var(--danger);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.alert-warning {
    background: var(--warning-light);
    color: var(--warning);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.alert-info {
    background: var(--info-light);
    color: var(--info);
    border: 1px solid rgba(59, 130, 246, 0.2);
}


/* ─── Skeleton Loading ─── */
.skeleton {
    background: linear-gradient(
        90deg,
        var(--bg-inset) 25%,
        var(--bg-surface-hover) 50%,
        var(--bg-inset) 75%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius);
}

.skeleton-text {
    height: 14px;
    margin-bottom: 8px;
}

.skeleton-text:last-child {
    width: 60%;
}

.skeleton-circle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
}


/* ─── Scrollbar ─── */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-hover);
}


/* ─── Animations ─── */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeSlideIn {
    from {
        opacity: 0;
        transform: translateY(-4px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(100%);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ─── Dropdowns ─── */
.dropdown-menu {
    background-color: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}
.dropdown-item {
    padding: 10px 16px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 10px;
    transition: background-color var(--duration) var(--ease), color var(--duration) var(--ease);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
}
.dropdown-item:hover {
    background-color: var(--bg-surface-hover);
    color: var(--primary);
}

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

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

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

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

.animate-fade-in {
    animation: fadeIn var(--duration-slow) var(--ease);
}

.animate-scale-in {
    animation: scaleIn var(--duration) var(--ease);
}

.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}


/* ─── Responsive ─── */
@media (max-width: 1024px) {
    .app-layout {
        grid-template-columns: 260px 1fr;
    }

    .app-layout-3col,
    .flow-layout {
        grid-template-columns: 220px 1fr 240px;
    }
}

@media (max-width: 768px) {
    .app-layout {
        grid-template-columns: 1fr;
    }

    .app-layout-3col,
    .flow-layout {
        grid-template-columns: 1fr;
    }

    .sidebar,
    .panel-right,
    .flow-sidebar,
    .flow-tools {
        display: none;
    }

    .topbar-nav {
        display: none;
    }

    .main-content {
        padding: 16px;
    }

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
}