/* ============================================================
   Pendo Web UI — app.css
   Complete production styles for personal management dashboard
   ============================================================ */

/* ============================================================
   1. CSS Variables
   ============================================================ */
:root {
    --color-bg: #F9FAFB;
    --color-surface: #FFFFFF;
    --color-border: #E5E7EB;
    --color-text: #111827;
    --color-text-secondary: #6B7280;
    --color-text-tertiary: #9CA3AF;
    --color-danger: #EF4444;
    --color-success: #10B981;
    --color-warning: #F59E0B;
    --color-dashboard: #6366F1;
    --color-events: #F59E0B;
    --color-tasks: #10B981;
    --color-ledger: #EF4444;
    --color-notes: #3B82F6;
    --color-diary: #EC4899;
    --color-search: #6B7280;
    --color-stats: #8B5CF6;
    --radius: 12px;
    --radius-sm: 8px;
    --radius-xs: 4px;
    --shadow: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-lg: 0 4px 12px rgba(0,0,0,0.15);
    --sidebar-width: 220px;
    --header-height: 56px;
    --transition: 0.2s ease;
}

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

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        "Helvetica Neue", Arial, "Noto Sans SC", "PingFang SC",
        "Microsoft YaHei", sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    min-height: 100vh;
    overflow-x: hidden;
}

body.sidebar-open {
    overflow: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

ul, ol {
    list-style: none;
}

img, svg {
    display: block;
    max-width: 100%;
}

button {
    cursor: pointer;
    font-family: inherit;
    font-size: inherit;
    border: none;
    background: none;
}

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

/* ============================================================
   3. Typography
   ============================================================ */
h1 {
    font-size: 24px;
    font-weight: 700;
    line-height: 1.3;
    color: var(--color-text);
}

h2 {
    font-size: 20px;
    font-weight: 600;
    line-height: 1.4;
    color: var(--color-text);
}

h3 {
    font-size: 16px;
    font-weight: 600;
    line-height: 1.4;
    color: var(--color-text);
}

h4 {
    font-size: 14px;
    font-weight: 600;
    line-height: 1.4;
    color: var(--color-text);
}

p {
    line-height: 1.6;
    color: var(--color-text);
}

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

.text-tertiary {
    color: var(--color-text-tertiary);
}

.text-sm {
    font-size: 12px;
}

.text-lg {
    font-size: 16px;
}

.text-xl {
    font-size: 20px;
    font-weight: 700;
}

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

.text-success {
    color: var(--color-success);
}

.text-warning {
    color: var(--color-warning);
}

.font-bold {
    font-weight: 700;
}

.font-medium {
    font-weight: 500;
}

/* ============================================================
   4. Layout
   ============================================================ */
#app {
    display: flex;
    flex-direction: row;
    min-height: 100vh;
    width: 100%;
    min-width: 0;
    overflow-x: hidden;
}

#sidebar-container,
#header-container {
    min-width: 0;
}

.main-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    min-width: 0;
    width: 100%;
    margin-left: var(--sidebar-width);
    transition: margin-left var(--transition);
    overflow: hidden;
    position: relative;
    z-index: 1;
}

.content {
    flex: 1;
    min-width: 0;
    padding: 24px;
    overflow-y: auto;
    overflow-x: hidden;
}

.page-section {
    margin-bottom: 32px;
}

.section-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--color-border);
}

/* ============================================================
   5. Sidebar
   ============================================================ */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background:
        radial-gradient(circle at top left, rgba(255,255,255,0.92), transparent 32%),
        linear-gradient(180deg, rgba(255,255,255,0.98), rgba(248,250,252,0.96));
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    z-index: 100;
    transition: width var(--transition);
    overflow: hidden;
    box-shadow: 10px 0 30px rgba(15,23,42,0.03);
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 18px 18px 16px;
    margin: 10px 10px 0;
    border-radius: 18px;
    background: rgba(255,255,255,0.9);
    border: 1px solid rgba(226,232,240,0.88);
    white-space: nowrap;
    overflow: hidden;
}

.sidebar-logo-icon {
    width: 40px;
    height: 40px;
    border-radius: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    flex-shrink: 0;
    background: linear-gradient(180deg, rgba(99,102,241,0.18), rgba(59,130,246,0.08));
}

.sidebar-logo-copy {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.sidebar-logo-text {
    font-size: 18px;
    font-weight: 800;
    color: var(--color-text);
    letter-spacing: -0.02em;
}

.sidebar-logo-subtitle {
    font-size: 11px;
    font-weight: 600;
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.sidebar-nav {
    flex: 1;
    padding: 12px 10px 14px;
    overflow-y: auto;
    overflow-x: hidden;
}

.sidebar-nav::-webkit-scrollbar {
    width: 4px;
}

.sidebar-nav::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 2px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 12px;
    border-radius: 18px;
    cursor: pointer;
    color: var(--color-text-secondary);
    font-size: 14px;
    font-weight: 600;
    transition: background-color var(--transition), color var(--transition), transform var(--transition), box-shadow var(--transition);
    white-space: nowrap;
    overflow: hidden;
    position: relative;
    border: 1px solid transparent;
    user-select: none;
    margin-bottom: 6px;
}

.nav-item:hover {
    background-color: rgba(255,255,255,0.88);
    color: var(--color-text);
    transform: translateX(2px);
}

.nav-item.active {
    color: var(--color-text);
    background:
        linear-gradient(135deg, color-mix(in srgb, var(--nav-accent) 12%, white), rgba(255,255,255,0.96));
    font-weight: 600;
    border-color: color-mix(in srgb, var(--nav-accent) 24%, rgba(226,232,240,0.88));
    box-shadow: 0 12px 24px color-mix(in srgb, var(--nav-accent) 16%, transparent);
}

.nav-icon-shell {
    width: 40px;
    height: 40px;
    border-radius: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: color-mix(in srgb, var(--nav-accent) 12%, white);
    flex-shrink: 0;
}

.nav-icon {
    font-size: 18px;
}

.nav-copy {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.nav-label {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    color: var(--color-text);
    font-weight: 700;
}

.nav-hint {
    font-size: 11px;
    color: var(--color-text-tertiary);
    overflow: hidden;
    text-overflow: ellipsis;
}

.nav-section-label {
    padding: 12px 10px 6px;
    font-size: 11px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-tertiary);
    white-space: nowrap;
}

.sidebar-separator {
    height: 1px;
    margin: 8px 10px;
    background: linear-gradient(90deg, transparent, rgba(203,213,225,0.9), transparent);
}

.sidebar-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.28);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition);
    z-index: 90;
}

.sidebar-backdrop.visible {
    opacity: 1;
    pointer-events: auto;
}

.sidebar-footer {
    padding: 12px 16px;
    border-top: 1px solid var(--color-border);
}

/* Collapsed sidebar */
.sidebar.collapsed {
    width: 56px;
}

.sidebar.collapsed .nav-item-label,
.sidebar.collapsed .sidebar-logo-copy,
.sidebar.collapsed .nav-section-label {
    display: none;
}

.sidebar.collapsed ~ .main-wrapper {
    margin-left: 56px;
}

.sidebar.collapsed .nav-item {
    padding: 10px;
    justify-content: center;
    border: 1px solid transparent;
}

.sidebar.collapsed .nav-hint {
    display: none;
}

/* ============================================================
   6. Header
   ============================================================ */
.header {
    position: sticky;
    top: 0;
    height: var(--header-height);
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 0 24px;
    z-index: 50;
    flex-shrink: 0;
}

.header-toggle {
    width: 32px;
    height: 32px;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: background-color var(--transition);
    flex-shrink: 0;
    font-size: 18px;
}

.header-toggle,
.header-search-toggle {
    display: none;
}

.header-toggle:hover {
    background-color: var(--color-bg);
    color: var(--color-text);
}

.header-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text);
    flex: 1;
    min-width: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.header-search {
    flex: 1;
    max-width: 400px;
    position: relative;
}

.header-search .header-search-input {
    width: 100%;
    height: 34px;
    box-sizing: border-box;
    padding: 0 12px 0 46px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: var(--color-text);
    transition: border-color var(--transition), box-shadow var(--transition);
}

.header-search .header-search-input:focus {
    outline: none;
    border-color: #6366F1;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.12);
}

.header-search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    width: 18px;
    height: 18px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
    color: var(--color-text-tertiary);
    font-size: 13px;
    pointer-events: none;
}

.header-search-icon svg {
    width: 16px;
    height: 16px;
    display: block;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: auto;
    min-width: 0;
    flex-shrink: 0;
}

.header-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--color-dashboard);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    flex-shrink: 0;
}

.header-logout {
    height: 32px;
    padding: 0 12px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: var(--color-text-secondary);
    background: transparent;
    border: 1px solid var(--color-border);
    cursor: pointer;
    transition: background-color var(--transition), color var(--transition);
}

.header-logout:hover {
    background-color: var(--color-bg);
    color: var(--color-text);
}

.header-search-toggle {
    width: 32px;
    height: 32px;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
    background: transparent;
    transition: background-color var(--transition), color var(--transition);
    flex-shrink: 0;
    font-size: 16px;
}

.header-search-toggle:hover {
    background-color: var(--color-bg);
    color: var(--color-text);
}

/* ============================================================
   7. Cards
   ============================================================ */
.card {
    background: var(--color-surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--color-border);
    padding: 20px;
    overflow: hidden;
}

.card + .card {
    margin-top: 16px;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--color-border);
}

.card-header h3 {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-text);
}

.card-body {
    flex: 1;
}

.card-footer {
    margin-top: 16px;
    padding-top: 12px;
    border-top: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
}

/* ============================================================
   8. Summary Cards
   ============================================================ */
.summary-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.summary-card {
    background: var(--color-surface);
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    transition: box-shadow var(--transition), transform var(--transition);
}

.summary-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-1px);
}

.summary-card-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    flex-shrink: 0;
}

.summary-card-icon.dashboard { background: rgba(99, 102, 241, 0.12); }
.summary-card-icon.events    { background: rgba(245, 158, 11, 0.12); }
.summary-card-icon.tasks     { background: rgba(16, 185, 129, 0.12); }
.summary-card-icon.ledger    { background: rgba(239, 68, 68, 0.12); }
.summary-card-icon.notes     { background: rgba(59, 130, 246, 0.12); }
.summary-card-icon.diary     { background: rgba(236, 72, 153, 0.12); }
.summary-card-icon.stats     { background: rgba(139, 92, 246, 0.12); }

.summary-card-content {
    flex: 1;
    min-width: 0;
}

.summary-card-value {
    font-size: 28px;
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-text);
}

.summary-card-label {
    font-size: 13px;
    color: var(--color-text-secondary);
    margin-top: 2px;
}

.summary-card-change {
    font-size: 12px;
    margin-top: 4px;
    font-weight: 500;
}

.summary-card-change.up   { color: var(--color-success); }
.summary-card-change.down { color: var(--color-danger); }

/* ============================================================
   9. Buttons
   ============================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    height: 36px;
    padding: 0 16px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color var(--transition), color var(--transition),
                border-color var(--transition), box-shadow var(--transition),
                opacity var(--transition);
    white-space: nowrap;
    user-select: none;
    border: 1px solid transparent;
    text-decoration: none;
}

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

.btn-primary {
    background-color: #6366F1;
    color: #FFFFFF;
    border-color: #6366F1;
}

.btn-primary:hover {
    background-color: #4F46E5;
    border-color: #4F46E5;
}

.btn-primary:active {
    background-color: #4338CA;
}

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

.btn-secondary:hover {
    background-color: var(--color-bg);
    border-color: #D1D5DB;
}

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

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

.btn-danger {
    background-color: var(--color-danger);
    color: #FFFFFF;
    border-color: var(--color-danger);
}

.btn-danger:hover {
    background-color: #DC2626;
    border-color: #DC2626;
}

.btn-success {
    background-color: var(--color-success);
    color: #FFFFFF;
    border-color: var(--color-success);
}

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

.btn-sm {
    height: 28px;
    padding: 0 10px;
    font-size: 12px;
    border-radius: var(--radius-xs);
}

.btn-lg {
    height: 44px;
    padding: 0 24px;
    font-size: 15px;
}

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    border-radius: 50%;
    font-size: 16px;
}

.btn-icon.btn-sm {
    width: 28px;
    height: 28px;
    font-size: 13px;
}

.btn-full {
    width: 100%;
}

/* ============================================================
   10. Forms
   ============================================================ */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 16px;
}

.form-group:last-child {
    margin-bottom: 0;
}

.form-group label {
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text);
}

.form-row {
    display: flex;
    gap: 12px;
    align-items: flex-end;
}

.form-row .form-group {
    flex: 1;
    margin-bottom: 0;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"],
input[type="datetime-local"],
input[type="time"],
input[type="search"],
input[type="url"],
select,
textarea {
    width: 100%;
    height: 36px;
    padding: 0 12px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--color-text);
    transition: border-color var(--transition), box-shadow var(--transition);
    appearance: none;
    -webkit-appearance: none;
}

textarea {
    height: auto;
    min-height: 80px;
    padding: 10px 12px;
    resize: vertical;
    line-height: 1.5;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: #6366F1;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.12);
}

input::placeholder,
textarea::placeholder {
    color: var(--color-text-tertiary);
}

input:disabled,
select:disabled,
textarea:disabled {
    background-color: var(--color-bg);
    color: var(--color-text-tertiary);
    cursor: not-allowed;
}

select {
    cursor: pointer;
    background-color: var(--color-bg);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16' fill='none'%3E%3Cpath d='M4 6.5l4 4 4-4' stroke='%236B7280' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    padding-right: 34px;
}

select:hover:not(:disabled) {
    border-color: #9CA3AF;
    background-color: #EEF0F2;
}

.pselect {
    --pselect-accent: #6366F1;
    --pselect-accent-text: #4338CA;
    --pselect-accent-soft: rgba(99, 102, 241, 0.08);
    --pselect-accent-shadow: rgba(99, 102, 241, 0.12);
    --pselect-border-strong: rgba(99, 102, 241, 0.35);
    position: relative;
    display: inline-block;
    flex-shrink: 0;
    min-width: 0;
}

.pselect-trigger {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    cursor: pointer;
    user-select: none;
    white-space: nowrap;
    border: 1px solid var(--color-border);
    background: var(--color-bg);
    color: var(--color-text);
    font-size: 13px;
    font-weight: 500;
    transition: border-color var(--transition), background-color var(--transition),
                box-shadow var(--transition);
}

.pselect-trigger:focus {
    outline: none;
}

.pselect:hover .pselect-trigger {
    border-color: #9CA3AF;
    background: #EEF0F2;
}

.pselect.pselect-open .pselect-trigger {
    border-color: var(--pselect-accent);
    box-shadow: 0 0 0 3px var(--pselect-accent-shadow);
}

.pselect-label {
    overflow: hidden;
    text-overflow: ellipsis;
}

.pselect-chevron {
    flex-shrink: 0;
    color: #9CA3AF;
    transition: transform 0.2s ease;
}

.pselect.pselect-open .pselect-chevron {
    transform: rotate(180deg);
    color: var(--pselect-accent);
}

.pselect-panel {
    display: none;
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    min-width: 100%;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.14);
    z-index: 1200;
    padding: 4px 0;
    overflow: hidden;
}

.pselect.pselect-open .pselect-panel {
    display: block;
}

.pselect-option {
    padding: 8px 14px;
    font-size: 13px;
    color: var(--color-text);
    cursor: pointer;
    white-space: nowrap;
    transition: background-color 0.12s ease, color 0.12s ease;
}

.pselect-option:hover {
    background: rgba(0, 0, 0, 0.04);
}

.pselect-option.pselect-selected {
    font-weight: 600;
    color: var(--pselect-accent-text);
    background: var(--pselect-accent-soft);
}

.pselect.pselect-block,
.pselect.pselect-block .pselect-trigger {
    width: 100%;
}

.pselect-pill .pselect-trigger {
    height: 30px;
    padding: 0 10px 0 12px;
    border-radius: 20px;
    border-color: var(--pselect-border-strong);
    color: var(--pselect-accent-text);
}

.pselect-pill:hover .pselect-trigger {
    border-color: var(--pselect-accent);
    background: var(--pselect-accent-soft);
}

.pselect-form .pselect-trigger {
    height: 36px;
    padding: 0 12px;
    border-radius: var(--radius-sm);
    background: var(--color-surface);
}

.pselect-theme-tasks {
    --pselect-accent: var(--color-tasks);
    --pselect-accent-text: #047857;
    --pselect-accent-soft: rgba(16, 185, 129, 0.08);
    --pselect-accent-shadow: rgba(16, 185, 129, 0.12);
    --pselect-border-strong: rgba(16, 185, 129, 0.35);
}

.pselect-theme-notes {
    --pselect-accent: var(--color-notes);
    --pselect-accent-text: #1D4ED8;
    --pselect-accent-soft: rgba(59, 130, 246, 0.08);
    --pselect-accent-shadow: rgba(59, 130, 246, 0.12);
    --pselect-border-strong: rgba(59, 130, 246, 0.35);
}

.pselect-theme-diary {
    --pselect-accent: var(--color-diary);
    --pselect-accent-text: #BE185D;
    --pselect-accent-soft: rgba(236, 72, 153, 0.08);
    --pselect-accent-shadow: rgba(236, 72, 153, 0.12);
    --pselect-border-strong: rgba(236, 72, 153, 0.35);
}

.pselect-theme-ledger {
    --pselect-accent: var(--color-ledger);
    --pselect-accent-text: #B91C1C;
    --pselect-accent-soft: rgba(239, 68, 68, 0.08);
    --pselect-accent-shadow: rgba(239, 68, 68, 0.12);
    --pselect-border-strong: rgba(239, 68, 68, 0.35);
}

.input-sm {
    height: 28px;
    font-size: 13px;
    padding: 0 10px;
}

.input-error {
    border-color: var(--color-danger) !important;
}

.field-error {
    font-size: 12px;
    color: var(--color-danger);
    margin-top: 4px;
}

.error-text {
    color: var(--color-danger);
    font-size: 13px;
}

/* ============================================================
   11. Tags & Badges
   ============================================================ */
.tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    height: 22px;
    padding: 0 8px;
    border-radius: 100px;
    font-size: 11px;
    font-weight: 500;
    background: var(--color-bg);
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
    white-space: nowrap;
}

.tag-dashboard { background: rgba(99,102,241,0.1);  color: #4F46E5;  border-color: rgba(99,102,241,0.2); }
.tag-events    { background: rgba(245,158,11,0.1);  color: #B45309;  border-color: rgba(245,158,11,0.2); }
.tag-tasks     { background: rgba(16,185,129,0.1);  color: #059669;  border-color: rgba(16,185,129,0.2); }
.tag-ledger    { background: rgba(239,68,68,0.1);   color: #DC2626;  border-color: rgba(239,68,68,0.2); }
.tag-notes     { background: rgba(59,130,246,0.1);  color: #2563EB;  border-color: rgba(59,130,246,0.2); }
.tag-diary     { background: rgba(236,72,153,0.1);  color: #DB2777;  border-color: rgba(236,72,153,0.2); }
.tag-success   { background: rgba(16,185,129,0.1);  color: #059669;  border-color: rgba(16,185,129,0.2); }
.tag-danger    { background: rgba(239,68,68,0.1);   color: #DC2626;  border-color: rgba(239,68,68,0.2); }
.tag-warning   { background: rgba(245,158,11,0.1);  color: #B45309;  border-color: rgba(245,158,11,0.2); }

.badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    border-radius: 100px;
    font-size: 11px;
    font-weight: 600;
    background: var(--color-dashboard);
    color: white;
    line-height: 1;
}

.badge-success { background: var(--color-success); }
.badge-danger  { background: var(--color-danger); }
.badge-warning { background: var(--color-warning); color: #111827; }
.badge-gray    { background: var(--color-border); color: var(--color-text-secondary); }

/* Priority */
.priority-1 { color: var(--color-danger);  font-weight: 600; }
.priority-2 { color: var(--color-warning); font-weight: 600; }
.priority-3 { color: var(--color-notes);   font-weight: 600; }
.priority-4 { color: var(--color-text-tertiary); }
.priority-5 { color: #CBD5E1; }

.priority-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

.priority-dot-1 { background: var(--color-danger); }
.priority-dot-2 { background: var(--color-warning); }
.priority-dot-3 { background: var(--color-notes); }
.priority-dot-4 { background: var(--color-border); }
.priority-dot-5 { background: #E2E8F0; }

/* ============================================================
   12. Tables & Lists
   ============================================================ */
.list {
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--color-surface);
}

.list-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-bottom: 1px solid var(--color-border);
    transition: background-color var(--transition);
    cursor: pointer;
}

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

.list-item:hover {
    background-color: var(--color-bg);
}

.list-item-main {
    flex: 1;
    min-width: 0;
}

.list-item-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.list-item-sub {
    font-size: 12px;
    color: var(--color-text-secondary);
    margin-top: 2px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.list-item-actions {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-shrink: 0;
    opacity: 0;
    transition: opacity var(--transition);
}

.list-item:hover .list-item-actions {
    opacity: 1;
}

.item-row {
    display: grid;
    grid-template-columns: 1fr auto auto;
    gap: 12px;
    align-items: center;
}

.table-container {
    width: 100%;
    overflow-x: auto;
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
}

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-surface);
    font-size: 14px;
}

th {
    padding: 10px 14px;
    text-align: left;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--color-text-secondary);
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    white-space: nowrap;
}

td {
    padding: 12px 14px;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text);
    vertical-align: middle;
}

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

tr:hover td {
    background-color: var(--color-bg);
}

/* ============================================================
   13. Modal
   ============================================================ */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.45);
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    animation: fadeIn 0.15s ease;
}

.modal-content {
    background: var(--color-surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: slideUp 0.2s ease;
}

.modal-content.modal-sm {
    max-width: 400px;
}

.modal-content.modal-lg {
    max-width: 800px;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px 16px;
    border-bottom: 1px solid var(--color-border);
    flex-shrink: 0;
}

.modal-header h2 {
    font-size: 17px;
    font-weight: 600;
    color: var(--color-text);
}

.modal-close {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-secondary);
    font-size: 18px;
    cursor: pointer;
    transition: background-color var(--transition), color var(--transition);
    flex-shrink: 0;
}

.modal-close:hover {
    background-color: var(--color-bg);
    color: var(--color-text);
}

.modal-body {
    flex: 1;
    padding: 20px 24px;
    overflow-y: auto;
}

.modal-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
    padding: 16px 24px 20px;
    border-top: 1px solid var(--color-border);
    flex-shrink: 0;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(16px) scale(0.97); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* ============================================================
   14. Toast
   ============================================================ */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 300;
    display: flex;
    flex-direction: column;
    gap: 8px;
    pointer-events: none;
    max-width: 360px;
    width: calc(100vw - 40px);
}

.toast {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    padding: 12px 16px;
    display: flex;
    align-items: flex-start;
    gap: 10px;
    pointer-events: all;
    animation: toastSlideIn 0.25s ease;
    font-size: 14px;
    color: var(--color-text);
    border-left-width: 4px;
}

.toast.removing {
    animation: toastSlideOut 0.2s ease forwards;
}

.toast-icon {
    font-size: 16px;
    flex-shrink: 0;
    margin-top: 1px;
}

.toast-body {
    flex: 1;
    min-width: 0;
}

.toast-title {
    font-weight: 600;
    margin-bottom: 2px;
}

.toast-message {
    font-size: 13px;
    color: var(--color-text-secondary);
}

.toast-close {
    width: 20px;
    height: 20px;
    border-radius: var(--radius-xs);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-tertiary);
    cursor: pointer;
    font-size: 14px;
    flex-shrink: 0;
    transition: color var(--transition);
}

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

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

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

.toast-info {
    border-left-color: var(--color-notes);
}

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

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

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

/* ============================================================
   15. Login Screen
   ============================================================ */
.login-screen {
    position: fixed;
    inset: 0;
    background:
        radial-gradient(circle at top left, rgba(99,102,241,0.12), transparent 28%),
        radial-gradient(circle at bottom right, rgba(239,68,68,0.10), transparent 30%),
        linear-gradient(145deg, #F8FAFC 0%, #FFF8F4 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 400;
    padding: 24px;
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
}

.login-shell {
    width: min(1040px, 100%);
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.95fr);
    gap: 20px;
    align-items: stretch;
    margin: auto;
}

.login-stage,
.login-card {
    background: rgba(255,255,255,0.92);
    border: 1px solid rgba(148, 163, 184, 0.16);
    box-shadow: 0 18px 50px rgba(15, 23, 42, 0.07);
    backdrop-filter: blur(16px);
}

.login-stage {
    border-radius: 32px;
    padding: 34px 34px 30px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 520px;
}

.login-stage-badge {
    display: inline-flex;
    align-items: center;
    width: fit-content;
    height: 34px;
    padding: 0 14px;
    border-radius: 999px;
    background: rgba(99,102,241,0.10);
    color: #4338ca;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-bottom: 18px;
}

.login-stage h1 {
    font-size: clamp(34px, 4vw, 46px);
    line-height: 1.08;
    letter-spacing: -0.04em;
    color: #0f172a;
    margin-bottom: 14px;
}

.login-stage > p {
    font-size: 16px;
    line-height: 1.8;
    color: var(--color-text-secondary);
    max-width: 34em;
}

.login-stage-points {
    display: grid;
    gap: 14px;
    margin-top: 28px;
}

.login-stage-point {
    display: grid;
    grid-template-columns: 36px minmax(0, 1fr);
    gap: 12px;
    align-items: center;
    padding: 14px 16px;
    border-radius: 20px;
    background: rgba(248,250,252,0.88);
    border: 1px solid rgba(148, 163, 184, 0.14);
}

.login-stage-point strong {
    width: 36px;
    height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    background: linear-gradient(135deg, #6366F1, #8B5CF6);
    color: #fff;
    font-size: 14px;
    font-weight: 800;
}

.login-stage-point span {
    font-size: 14px;
    color: #334155;
    line-height: 1.65;
}

.login-card {
    border-radius: 28px;
    padding: 30px 28px 26px;
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 14px;
    align-items: stretch;
}

.login-card-head {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 4px;
}

.login-card-kicker {
    display: inline-flex;
    width: fit-content;
    align-items: center;
    height: 28px;
    padding: 0 12px;
    border-radius: 999px;
    background: rgba(239,68,68,0.08);
    color: #b91c1c;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.login-card h2 {
    font-size: 28px;
    font-weight: 800;
    letter-spacing: -0.03em;
    color: #111827;
}

.login-card-head p {
    color: var(--color-text-secondary);
    font-size: 15px;
    line-height: 1.75;
}

.login-field-label {
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: #64748b;
}

.login-token-input {
    min-height: 156px;
    resize: vertical;
    padding: 16px 18px;
    border-radius: 20px;
    border: 1px solid rgba(148, 163, 184, 0.2);
    background: rgba(248,250,252,0.92);
    color: #0f172a;
    font-size: 14px;
    line-height: 1.7;
    box-shadow: inset 0 1px 2px rgba(15, 23, 42, 0.03);
}

.login-token-input:focus {
    outline: none;
    border-color: #6366F1;
    box-shadow: 0 0 0 4px rgba(99,102,241,0.12);
    background: #fff;
}

.login-card-actions {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 10px;
    align-items: stretch;
}

.login-card .btn {
    height: 46px;
    width: 100%;
    font-size: 15px;
    font-weight: 700;
    border-radius: 16px;
}

.login-card-subactions {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    margin-top: -4px;
}

.login-clear-btn {
    height: 46px !important;
    width: 100%;
    padding: 0 12px;
    font-size: 15px !important;
    font-weight: 700 !important;
    color: #64748b;
    justify-content: center;
    border: 1px solid var(--color-border) !important;
}

.login-helper {
    font-size: 13px;
    line-height: 1.7;
    color: var(--color-text-secondary);
}

@media (max-width: 900px) {
    .login-screen {
        align-items: flex-start;
    }

    .login-shell {
        grid-template-columns: 1fr;
        margin: 0 auto;
    }

    .login-stage {
        min-height: auto;
        padding: 28px 24px 24px;
    }

    .login-card {
        padding: 24px 22px 22px;
    }
}

@media (max-width: 560px) {
    .login-screen {
        padding: 16px;
    }

    .login-shell {
        gap: 14px;
    }

    .login-stage {
        padding: 24px 20px 20px;
    }

    .login-card {
        padding: 22px 18px 18px;
    }

    .login-card-actions {
        grid-template-columns: 1fr;
    }

    .login-card-subactions {
        grid-template-columns: 1fr;
        margin-top: -2px;
    }
}

/* ============================================================
   18. Calendar
   ============================================================ */
.calendar-wrapper {
    background: var(--color-surface);
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow);
    overflow: hidden;
}

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

.calendar-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text);
}

.calendar-nav {
    display: flex;
    gap: 4px;
}

.calendar-weekdays {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    border-bottom: 1px solid var(--color-border);
}

.calendar-weekday {
    padding: 8px;
    text-align: center;
    font-size: 12px;
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
}

.calendar-day {
    aspect-ratio: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding: 6px;
    border-right: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    cursor: pointer;
    transition: background-color var(--transition);
    min-height: 60px;
    position: relative;
}

.calendar-day:nth-child(7n) {
    border-right: none;
}

.calendar-day:hover {
    background-color: var(--color-bg);
}

.calendar-day-number {
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text);
    width: 26px;
    height: 26px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    flex-shrink: 0;
}

.calendar-day.other-month .calendar-day-number {
    color: var(--color-text-tertiary);
}

.calendar-day.today .calendar-day-number {
    background: #6366F1;
    color: white;
    font-weight: 700;
}

.calendar-day.selected {
    background-color: rgba(99, 102, 241, 0.06);
}

.calendar-day.has-events::after {
    content: '';
    display: block;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--color-events);
    margin-top: 3px;
    flex-shrink: 0;
}

.calendar-day-events {
    display: flex;
    flex-direction: column;
    gap: 2px;
    width: 100%;
    margin-top: 4px;
    overflow: hidden;
}

.calendar-event-chip {
    font-size: 10px;
    padding: 1px 5px;
    border-radius: 3px;
    background: rgba(245, 158, 11, 0.15);
    color: #B45309;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    width: 100%;
}

/* ============================================================
   19. Pagination
   ============================================================ */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 16px 0;
}

.page-btn {
    min-width: 32px;
    height: 32px;
    padding: 0 8px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text-secondary);
    background: transparent;
    border: 1px solid transparent;
    cursor: pointer;
    transition: background-color var(--transition), color var(--transition),
                border-color var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.page-btn.active {
    background-color: #6366F1;
    color: white;
    border-color: #6366F1;
    font-weight: 600;
}

.page-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    pointer-events: none;
}

.pagination-info {
    font-size: 13px;
    color: var(--color-text-secondary);
    padding: 0 8px;
}

/* ============================================================
   20. Empty & Error States
   ============================================================ */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 48px 24px;
    text-align: center;
    gap: 12px;
}

.empty-state-icon {
    font-size: 40px;
    line-height: 1;
    opacity: 0.6;
}

.empty-state h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text-secondary);
}

.empty-state p {
    font-size: 14px;
    color: var(--color-text-tertiary);
    max-width: 320px;
}

.error-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 48px 24px;
    text-align: center;
    gap: 12px;
}

.error-state-icon {
    font-size: 40px;
    line-height: 1;
}

.error-state h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-danger);
}

.error-state p {
    font-size: 14px;
    color: var(--color-text-secondary);
    max-width: 320px;
}

.loading-state {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 48px 24px;
    gap: 12px;
    color: var(--color-text-secondary);
}

.spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--color-border);
    border-top-color: #6366F1;
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
    flex-shrink: 0;
}

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

/* ============================================================
   21. Responsive
   ============================================================ */
@media (max-width: 1024px) {
    .sidebar {
        width: 78px;
    }

    .sidebar .sidebar-logo-copy,
    .sidebar .nav-copy,
    .sidebar .nav-section-label {
        display: none;
    }

    .sidebar .sidebar-logo {
        justify-content: center;
        gap: 0;
        padding: 12px 0 10px;
        margin: 10px 10px 2px;
        border-radius: 20px;
        background: transparent;
        border: none;
        box-shadow: none;
    }

    .sidebar .sidebar-logo-icon {
        display: inline-flex;
        width: 42px;
        height: 42px;
        border-radius: 16px;
        font-size: 22px;
    }

    .sidebar-nav {
        padding: 10px 8px 12px;
    }

    .sidebar .nav-item {
        padding: 8px 0;
        justify-content: center;
        gap: 0;
        border-radius: 20px;
        margin-bottom: 8px;
    }

    .sidebar .nav-icon-shell {
        width: 44px;
        height: 44px;
        border-radius: 16px;
    }

    .sidebar .nav-icon {
        font-size: 20px;
    }

    .sidebar .sidebar-separator {
        margin: 10px 12px;
    }

    .main-wrapper {
        margin-left: 78px;
        overflow-x: hidden;
    }

    .summary-cards {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        width: var(--sidebar-width);
        box-shadow: var(--shadow-lg);
        visibility: hidden;
        transition: transform var(--transition), visibility var(--transition);
    }

    .sidebar.mobile-open {
        transform: translateX(0);
        visibility: visible;
    }

    .sidebar .sidebar-logo {
        justify-content: flex-start;
        gap: 12px;
        padding: 18px 18px 16px;
        margin: 10px 10px 0;
        border-radius: 18px;
        background: rgba(255,255,255,0.9);
        border: 1px solid rgba(226,232,240,0.88);
    }

    .sidebar .sidebar-logo-copy,
    .sidebar .nav-copy,
    .sidebar .nav-section-label {
        display: flex;
    }

    .sidebar .sidebar-logo-icon {
        width: 40px;
        height: 40px;
        border-radius: 14px;
    }

    .sidebar .nav-item {
        padding: 10px 16px;
        justify-content: flex-start;
        gap: 12px;
    }

    .main-wrapper {
        margin-left: 0;
    }

    .content {
        padding: 16px calc(16px + env(safe-area-inset-right)) calc(24px + env(safe-area-inset-bottom)) calc(16px + env(safe-area-inset-left));
    }

    .summary-cards {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

    .form-row {
        flex-direction: column;
        gap: 0;
    }

    .header {
        padding: 0 calc(14px + env(safe-area-inset-right)) 0 calc(14px + env(safe-area-inset-left));
        gap: 10px;
    }

    .header-toggle,
    .header-search-toggle {
        display: inline-flex;
    }

    .header-title {
        font-size: 20px;
    }

    .header-search {
        display: none;
    }

    .header-actions {
        gap: 6px;
    }

    .header-logout {
        padding: 0 10px;
        font-size: 12px;
    }

    .modal-content {
        margin: 0;
        max-height: 100vh;
        border-radius: var(--radius) var(--radius) 0 0;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        max-width: 100%;
    }

    .modal-overlay {
        align-items: flex-end;
        padding: 0;
    }

}

@media (max-width: 480px) {
    .summary-cards {
        grid-template-columns: 1fr 1fr;
    }

    .summary-card-value {
        font-size: 22px;
    }

    .card {
        padding: 14px;
    }

    .header {
        padding: 0 calc(12px + env(safe-area-inset-right)) 0 calc(12px + env(safe-area-inset-left));
    }

    .header-title {
        font-size: 18px;
    }

    .header-actions {
        gap: 4px;
    }

    .header-search-toggle {
        width: 30px;
        height: 30px;
    }

    .header-logout {
        position: relative;
        width: 30px;
        min-width: 30px;
        height: 30px;
        padding: 0;
        font-size: 0;
        color: transparent;
        overflow: hidden;
    }

    .header-logout::after {
        content: '退';
        position: absolute;
        inset: 0;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 12px;
        font-weight: 700;
        color: var(--color-text-secondary);
    }
}

/* ============================================================
   22. Utility classes
   ============================================================ */
.flex          { display: flex; align-items: center; }
.flex-col      { display: flex; flex-direction: column; }
.flex-between  { display: flex; align-items: center; justify-content: space-between; }
.flex-end      { display: flex; align-items: center; justify-content: flex-end; }
.flex-center   { display: flex; align-items: center; justify-content: center; }
.flex-wrap     { flex-wrap: wrap; }
.flex-1        { flex: 1; }
.flex-shrink-0 { flex-shrink: 0; }

.gap-xs  { gap: 4px; }
.gap-sm  { gap: 8px; }
.gap-md  { gap: 12px; }
.gap-lg  { gap: 16px; }
.gap-xl  { gap: 24px; }

.mt-xs   { margin-top: 4px; }
.mt-sm   { margin-top: 8px; }
.mt-md   { margin-top: 16px; }
.mt-lg   { margin-top: 24px; }
.mt-xl   { margin-top: 32px; }

.mb-xs   { margin-bottom: 4px; }
.mb-sm   { margin-bottom: 8px; }
.mb-md   { margin-bottom: 16px; }
.mb-lg   { margin-bottom: 24px; }

.p-sm    { padding: 8px; }
.p-md    { padding: 16px; }
.p-lg    { padding: 24px; }

.text-center { text-align: center; }
.text-right  { text-align: right; }
.text-left   { text-align: left; }

.truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.hidden     { display: none !important; }
.invisible  { visibility: hidden; }

.w-full  { width: 100%; }
.h-full  { height: 100%; }

.rounded    { border-radius: var(--radius); }
.rounded-sm { border-radius: var(--radius-sm); }
.rounded-xs { border-radius: var(--radius-xs); }
.rounded-full { border-radius: 9999px; }

.divider {
    border: none;
    border-top: 1px solid var(--color-border);
    margin: 16px 0;
}

.cursor-pointer { cursor: pointer; }

/* ============================================================
   23. Tabs
   ============================================================ */
.tabs {
    display: flex;
    flex-direction: row;
    border-bottom: 1px solid var(--color-border);
    margin-bottom: 20px;
    gap: 0;
    overflow-x: auto;
}

.tabs::-webkit-scrollbar {
    display: none;
}

.tab {
    padding: 10px 16px;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-secondary);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: color var(--transition), border-color var(--transition);
    white-space: nowrap;
    user-select: none;
}

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

.tab.active {
    color: #6366F1;
    border-bottom-color: #6366F1;
    font-weight: 600;
}

/* ============================================================
   24. Timeline
   ============================================================ */
.timeline {
    position: relative;
    padding-left: 24px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 7px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--color-border);
    border-radius: 1px;
}

.timeline-item {
    position: relative;
    padding-bottom: 20px;
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -20px;
    top: 4px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--color-surface);
    border: 2px solid var(--color-border);
    z-index: 1;
}

.timeline-item.active::before {
    border-color: #6366F1;
    background: #6366F1;
}

.timeline-item.success::before {
    border-color: var(--color-success);
    background: var(--color-success);
}

.timeline-date {
    font-size: 12px;
    color: var(--color-text-tertiary);
    margin-bottom: 4px;
}

.timeline-content {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 12px;
}

/* ============================================================
   27. Misc: checkbox, amount colors, date-ago, etc.
   ============================================================ */
.checkbox-wrapper {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    user-select: none;
}

.checkbox-wrapper input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: #6366F1;
    cursor: pointer;
    flex-shrink: 0;
}

.amount-positive { color: var(--color-success); font-weight: 500; }
.amount-negative { color: var(--color-danger);  font-weight: 500; }
.amount-neutral  { color: var(--color-text-secondary); }

.completed .list-item-title {
    text-decoration: line-through;
    color: var(--color-text-tertiary);
}

.date-ago {
    font-size: 12px;
    color: var(--color-text-tertiary);
    white-space: nowrap;
}

.highlight {
    background: rgba(99, 102, 241, 0.15);
    border-radius: 2px;
    padding: 0 2px;
}

.kbd {
    display: inline-block;
    padding: 1px 6px;
    font-size: 11px;
    font-family: monospace;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xs);
    color: var(--color-text-secondary);
}

/* ============================================================
   29. Scroll lock (applied to body when modal is open)
   ============================================================ */
body.modal-open {
    overflow: hidden;
}