/* ═══════════════════════════════════════════════
   Absentzen — Design System
   HEMA Fencing Club Management
   ═══════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ---------- CSS Variables ---------- */
:root {
    /* Color Palette — Modern Clean Light Theme (Default: Bright, Clear, High Readability) */
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --bg-card-hover: #f1f5f9;
    --bg-elevated: #ffffff;
    --bg-input: #ffffff;

    --border-color: #e2e8f0;
    --border-focus: #2563eb;
    --border-subtle: #f1f5f9;

    /* Accent colors */
    --accent-primary: #2563eb;
    --accent-primary-hover: #1d4ed8;
    --accent-primary-glow: rgba(37, 99, 235, 0.12);
    --accent-success: #059669;
    --accent-success-glow: rgba(5, 150, 105, 0.12);
    --accent-warning: #d97706;
    --accent-warning-glow: rgba(217, 119, 6, 0.12);
    --accent-danger: #dc2626;
    --accent-danger-glow: rgba(220, 38, 38, 0.12);
    --accent-extra: #7c3aed;
    --accent-extra-glow: rgba(124, 58, 237, 0.12);

    /* Text */
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    --text-inverse: #ffffff;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.8125rem;
    --font-size-base: 0.9375rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.375rem;
    --font-size-2xl: 1.75rem;
    --font-size-3xl: 2.25rem;

    /* Spacing */
    --space-xs: 0.375rem;
    --space-sm: 0.625rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;

    /* Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
    --shadow-glow-primary: 0 4px 14px rgba(37, 99, 235, 0.2);
    --shadow-glow-success: 0 4px 14px rgba(5, 150, 105, 0.2);

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);

    /* Layout */
    --sidebar-width: 260px;
    --header-height: 64px;

    /* Toast backgrounds */
    --toast-success-bg: #ecfdf5;
    --toast-success-border: #10b981;
    --toast-success-text: #065f46;
    --toast-error-bg: #fef2f2;
    --toast-error-border: #ef4444;
    --toast-error-text: #991b1b;
    --toast-warning-bg: #fffbeb;
    --toast-warning-border: #f59e0b;
    --toast-warning-text: #92400e;
}

[data-theme="dark"] {
    /* Color Palette — Dark theme inspired by steel & fencing */
    --bg-primary: #0a0e17;
    --bg-secondary: #111827;
    --bg-card: #1a2236;
    --bg-card-hover: #1f2a42;
    --bg-elevated: #243049;
    --bg-input: #1a2236;

    --border-color: #2a3654;
    --border-focus: #4f8bff;
    --border-subtle: rgba(255, 255, 255, 0.06);

    /* Accent colors */
    --accent-primary: #4f8bff;
    --accent-primary-hover: #6b9fff;
    --accent-primary-glow: rgba(79, 139, 255, 0.25);
    --accent-success: #34d399;
    --accent-success-glow: rgba(52, 211, 153, 0.2);
    --accent-warning: #fbbf24;
    --accent-warning-glow: rgba(251, 191, 36, 0.2);
    --accent-danger: #f87171;
    --accent-danger-glow: rgba(248, 113, 113, 0.2);
    --accent-extra: #a78bfa;
    --accent-extra-glow: rgba(167, 139, 250, 0.2);

    /* Text */
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --text-inverse: #0a0e17;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.5);
    --shadow-glow-primary: 0 0 20px var(--accent-primary-glow);
    --shadow-glow-success: 0 0 20px var(--accent-success-glow);

    /* Toast backgrounds */
    --toast-success-bg: #065f46;
    --toast-success-border: #10b981;
    --toast-success-text: #a7f3d0;
    --toast-error-bg: #7f1d1d;
    --toast-error-border: #ef4444;
    --toast-error-text: #fecaca;
    --toast-warning-bg: #78350f;
    --toast-warning-border: #f59e0b;
    --toast-warning-text: #fef3c7;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    max-width: 100%;
    overflow-x: hidden;
}

body {
    font-family: var(--font-family);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    width: 100%;
    max-width: 100%;
    overflow-x: hidden;
}

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

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

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

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

/* ---------- Admin Layout ---------- */
.admin-layout {
    display: flex;
    min-height: 100vh;
    width: 100%;
    max-width: 100%;
    overflow-x: hidden;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
    transition: transform var(--transition-base);
}

.sidebar-brand {
    padding: var(--space-lg) var(--space-xl);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.sidebar-brand .brand-icon {
    font-size: 1.75rem;
}

.sidebar-brand .brand-text {
    font-size: var(--font-size-lg);
    font-weight: 700;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-extra));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sidebar-nav {
    flex: 1;
    padding: var(--space-md) var(--space-sm);
    display: flex;
    flex-direction: column;
    gap: 2px;
    overflow-y: auto;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
    background: none;
    width: 100%;
    text-align: left;
}

.nav-item:hover {
    background: var(--bg-card);
    color: var(--text-primary);
}

.nav-item.active {
    background: var(--accent-primary-glow);
    color: var(--accent-primary);
}

.nav-item .nav-icon {
    font-size: 1.2rem;
    width: 24px;
    text-align: center;
    flex-shrink: 0;
}

.nav-section-title {
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: var(--space-lg) var(--space-md) var(--space-xs);
}

/* Main content */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    width: calc(100% - var(--sidebar-width));
    max-width: 100%;
    overflow-x: hidden;
}

.page-header {
    padding: var(--space-xl) var(--space-2xl);
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(12px);
    width: 100%;
    box-sizing: border-box;
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    min-width: 0;
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex-shrink: 0;
}

.page-header h1 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    letter-spacing: -0.02em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.page-header .header-actions {
    display: flex;
    gap: var(--space-sm);
}

.page-body {
    padding: var(--space-xl) var(--space-2xl);
    width: 100%;
    box-sizing: border-box;
}

/* ---------- Cards ---------- */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.card:hover {
    border-color: rgba(37, 99, 235, 0.3);
    box-shadow: var(--shadow-md);
}

.card-title {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-sm);
}

.card-value {
    font-size: var(--font-size-2xl);
    font-weight: 800;
    letter-spacing: -0.03em;
}

.card-subtitle {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    margin-top: var(--space-xs);
}

/* Stat cards grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.stat-card {
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.stat-card.accent-blue::before { background: var(--accent-primary); }
.stat-card.accent-green::before { background: var(--accent-success); }
.stat-card.accent-yellow::before { background: var(--accent-warning); }
.stat-card.accent-red::before { background: var(--accent-danger); }
.stat-card.accent-purple::before { background: var(--accent-extra); }

.stat-icon {
    font-size: 1.75rem;
    margin-bottom: var(--space-sm);
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-lg);
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
    line-height: 1.4;
}

.btn:active {
    transform: scale(0.97);
}

.btn-primary {
    background: var(--accent-primary);
    color: white;
}

.btn-primary:hover {
    background: var(--accent-primary-hover);
    box-shadow: var(--shadow-glow-primary);
}

.btn-success {
    background: var(--accent-success);
    color: white;
}

.btn-success:hover {
    background: #047857;
    box-shadow: var(--shadow-glow-success);
}

.btn-danger {
    background: var(--accent-danger);
    color: white;
}

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

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

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

.btn-sm {
    padding: var(--space-xs) var(--space-md);
    font-size: var(--font-size-xs);
}

.btn-lg {
    padding: var(--space-md) var(--space-xl);
    font-size: var(--font-size-base);
}

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

/* ---------- Forms ---------- */
.form-group {
    margin-bottom: var(--space-lg);
}

.form-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--space-xs);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast);
    outline: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px var(--accent-primary-glow);
}

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

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

.form-checkbox {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    cursor: pointer;
}

.form-checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--accent-primary);
    cursor: pointer;
}

/* Form row (side by side) */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
}

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

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

.data-table th {
    padding: var(--space-md) var(--space-lg);
    text-align: left;
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}

.data-table td {
    padding: var(--space-md) var(--space-lg);
    font-size: var(--font-size-sm);
    border-bottom: 1px solid var(--border-subtle);
    vertical-align: middle;
}

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

.data-table tr:hover td {
    background: var(--bg-card-hover);
}

.data-table .cell-actions {
    display: flex;
    gap: var(--space-xs);
}

/* ---------- Badges ---------- */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 10px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    letter-spacing: 0.02em;
}

.badge-active {
    background: var(--accent-success-glow);
    color: var(--accent-success);
}

.badge-expired {
    background: var(--accent-danger-glow);
    color: var(--accent-danger);
}

.badge-completed {
    background: var(--accent-primary-glow);
    color: var(--accent-primary);
}

.badge-regular {
    background: var(--accent-primary-glow);
    color: var(--accent-primary);
}

.badge-extra {
    background: var(--accent-extra-glow);
    color: var(--accent-extra);
}

.badge-cancelled {
    background: rgba(100, 116, 139, 0.2);
    color: var(--text-muted);
}

.badge-paid {
    background: var(--accent-success-glow);
    color: var(--accent-success);
    border: 1px solid rgba(5, 150, 105, 0.25);
}

.badge-warning,
.badge-unpaid {
    background: var(--accent-warning-glow);
    color: var(--accent-warning);
    border: 1px solid rgba(217, 119, 6, 0.25);
}

.badge-student {
    background: var(--accent-extra-glow);
    color: var(--accent-extra);
}

.badge-dropin {
    background: rgba(245, 158, 11, 0.15);
    color: #d97706;
}

.badge-vip {
    background: rgba(147, 51, 234, 0.15);
    color: #9333ea;
    font-weight: 700;
}

.badge-single {
    background: rgba(14, 165, 233, 0.15);
    color: #0284c7;
    font-weight: 600;
}

.badge-custom {
    background: rgba(168, 85, 247, 0.15);
    color: #9333ea;
    font-weight: 600;
}

/* ---------- Modal ---------- */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.45);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    width: 90%;
    max-width: 520px;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.95) translateY(10px);
    transition: transform var(--transition-base);
    box-shadow: var(--shadow-lg);
}

.modal-overlay.active .modal {
    transform: scale(1) translateY(0);
}

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

.modal-header h2 {
    font-size: var(--font-size-lg);
    font-weight: 700;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    padding: var(--space-xs);
    line-height: 1;
    transition: color var(--transition-fast);
}

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

.modal-body {
    padding: var(--space-xl);
}

.modal-footer {
    padding: var(--space-lg) var(--space-xl);
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: var(--space-sm);
    justify-content: flex-end;
}

/* ---------- Calendar View ---------- */
.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 1px;
    background: var(--border-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.calendar-header-cell {
    padding: var(--space-sm);
    text-align: center;
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    background: var(--bg-card-hover);
}

.calendar-cell {
    background: var(--bg-card);
    padding: var(--space-sm);
    min-height: 90px;
    transition: background var(--transition-fast);
    cursor: pointer;
    position: relative;
}

.calendar-cell:hover {
    background: var(--bg-card-hover);
}

.calendar-cell.other-month {
    opacity: 0.35;
    background: var(--bg-primary);
}

.calendar-cell.today {
    background: var(--accent-primary-glow);
}

.calendar-date {
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--space-xs);
    color: var(--text-secondary);
}

.calendar-cell.today .calendar-date {
    color: var(--accent-primary);
}

.calendar-event {
    font-size: var(--font-size-xs);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    margin-bottom: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.calendar-event.event-regular {
    background: var(--accent-primary-glow);
    color: var(--accent-primary);
}

.calendar-event.event-extra {
    background: var(--accent-extra-glow);
    color: var(--accent-extra);
}

.calendar-event.event-cancelled {
    background: rgba(100, 116, 139, 0.15);
    color: var(--text-muted);
    text-decoration: line-through;
}

/* ---------- Search Bar ---------- */
.search-bar {
    position: relative;
}

.search-bar .search-icon {
    position: absolute;
    left: var(--space-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: var(--font-size-base);
    pointer-events: none;
}

.search-bar .form-input {
    padding-left: 2.5rem;
}

/* ---------- Member Search Picker Component ---------- */
.member-search-picker {
    position: relative;
    width: 100%;
}

.member-search-input-wrap {
    position: relative;
    display: flex;
    align-items: center;
}

.member-search-input-wrap .member-search-icon {
    position: absolute;
    left: var(--space-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: var(--font-size-base);
    pointer-events: none;
    z-index: 2;
}

.member-search-input-wrap .member-search-input {
    padding-left: 2.5rem;
    padding-right: 2.5rem;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast);
}

.member-search-input-wrap .member-search-clear {
    position: absolute;
    right: var(--space-sm);
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.95rem;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.member-search-input-wrap .member-search-clear:hover {
    color: var(--text-primary);
    background: var(--bg-card-hover);
}

.member-search-dropdown {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    right: 0;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    max-height: 230px;
    overflow-y: auto;
    z-index: 1050;
    animation: fadeInDropdown 0.15s ease-out;
}

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

.member-search-header {
    padding: var(--space-xs) var(--space-md);
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--text-muted);
    background: var(--bg-card-hover);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1;
}

.member-search-item {
    padding: var(--space-sm) var(--space-md);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-subtle);
    transition: background var(--transition-fast);
}

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

.member-search-item:hover,
.member-search-item.highlighted {
    background: var(--bg-card-hover);
}

.member-search-item.highlighted {
    border-left: 3px solid var(--accent-primary);
}

.member-search-item .item-title {
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.member-search-item .item-subtitle {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    margin-top: 2px;
}

.member-search-empty {
    padding: var(--space-md);
    text-align: center;
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

/* Selected Member Card */
.member-selected-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-sm) var(--space-md);
    background: var(--accent-primary-glow);
    border: 1.5px solid var(--accent-primary);
    border-radius: var(--radius-md);
    gap: var(--space-sm);
    animation: fadeInDropdown 0.2s ease-out;
}

.member-selected-card .member-selected-left {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    min-width: 0;
}

.member-selected-card .member-selected-avatar {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.member-selected-card .member-selected-details {
    min-width: 0;
}

.member-selected-card .member-selected-name {
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: var(--font-size-base);
}

.member-selected-card .member-selected-meta {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    margin-top: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.member-selected-card .member-change-btn {
    flex-shrink: 0;
    font-weight: 600;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(37, 99, 235, 0.3);
    background: var(--bg-card);
    color: var(--accent-primary);
    cursor: pointer;
    font-size: var(--font-size-xs);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 4px;
}

.member-selected-card .member-change-btn:hover {
    background: var(--accent-primary);
    color: #ffffff;
}

/* ---------- Empty State ---------- */
.empty-state {
    text-align: center;
    padding: var(--space-2xl);
    color: var(--text-muted);
}

.empty-state .empty-icon {
    font-size: 3rem;
    margin-bottom: var(--space-md);
    opacity: 0.5;
}

.empty-state p {
    font-size: var(--font-size-sm);
}

/* ---------- Toast Notifications (Non-blocking, top-center pill) ---------- */
.toast-container {
    position: fixed;
    top: 16px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    pointer-events: none; /* CRITICAL: Never block clicks on header actions or background */
    max-width: 92vw;
    width: max-content;
}

.toast {
    pointer-events: auto; /* Allow clicking toast itself */
    cursor: pointer;
    padding: 8px 18px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.4), 0 6px 12px -4px rgba(0, 0, 0, 0.25);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    min-width: 240px;
    max-width: 540px;
    animation: toastSlideDown 0.25s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    transition: opacity 0.2s ease, transform 0.2s ease;
    user-select: none;
}

.toast:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 14px 28px rgba(0, 0, 0, 0.45);
}

.toast:active {
    transform: scale(0.98);
}

.toast-close-btn {
    background: transparent;
    border: none;
    color: inherit;
    opacity: 0.65;
    font-size: 13px;
    line-height: 1;
    margin-left: 8px;
    cursor: pointer;
    padding: 3px 6px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.15s, background 0.15s;
}

.toast-close-btn:hover {
    opacity: 1;
    background: rgba(255, 255, 255, 0.2);
}

.toast-success {
    background: var(--toast-success-bg);
    color: var(--toast-success-text);
    border: 1px solid var(--toast-success-border);
}

.toast-error {
    background: var(--toast-error-bg);
    color: var(--toast-error-text);
    border: 1px solid var(--toast-error-border);
}

.toast-warning {
    background: var(--toast-warning-bg);
    color: var(--toast-warning-text);
    border: 1px solid var(--toast-warning-border);
}

.toast-info {
    background: rgba(30, 41, 59, 0.95);
    color: #e2e8f0;
    border: 1px solid #475569;
}

@keyframes toastSlideDown {
    from {
        transform: translateY(-24px) scale(0.92);
        opacity: 0;
    }
    to {
        transform: translateY(0) scale(1);
        opacity: 1;
    }
}

/* ---------- QR Display ---------- */
.qr-display {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-lg);
    padding: var(--space-2xl);
}

#qr-canvas-container {
    background: #ffffff;
    padding: var(--space-lg);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
}

.qr-display canvas,
.qr-display img {
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
}

.qr-session-info {
    text-align: center;
}

.qr-session-info .date {
    font-size: var(--font-size-xl);
    font-weight: 700;
}

.qr-session-info .type {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* ---------- Loading Spinner ---------- */
.spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.loading-overlay {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-2xl);
    gap: var(--space-md);
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

/* ---------- Section Divider ---------- */
.section-title {
    font-size: var(--font-size-base);
    font-weight: 700;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* ---------- Tabs ---------- */
.tabs {
    display: flex;
    gap: 0;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: var(--space-xl);
}

.tab-btn {
    padding: var(--space-md) var(--space-xl);
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-muted);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.tab-btn.active {
    color: var(--accent-primary);
    border-bottom-color: var(--accent-primary);
}

/* ---------- Attendance Live List ---------- */
.attendance-live {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.attendance-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    animation: fadeInUp 0.3s ease-out;
}

.attendance-item .member-name {
    flex: 1;
    font-weight: 500;
}

.attendance-item .check-time {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

@keyframes fadeInUp {
    from {
        transform: translateY(8px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* ---------- Responsive & Mobile Navigation ---------- */
html, body {
    max-width: 100%;
    overflow-x: hidden;
}

.admin-layout, .main-content, .page-body {
    max-width: 100%;
    overflow-x: hidden;
    box-sizing: border-box;
}

#qr-canvas-container {
    max-width: 100%;
    box-sizing: border-box;
}

#qr-canvas-container canvas,
#qr-canvas-container img {
    max-width: 100% !important;
    height: auto !important;
}

.sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.45);
    backdrop-filter: blur(2px);
    z-index: 90;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.mobile-bottom-nav {
    display: none;
}

.alerts-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
}

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

    .sidebar.open {
        transform: translateX(0);
    }

    .sidebar.open ~ .sidebar-backdrop,
    .sidebar-backdrop.active {
        display: block;
        opacity: 1;
    }

    .main-content {
        margin-left: 0;
        width: 100%;
        max-width: 100vw;
        overflow-x: hidden;
    }

    .page-body {
        padding: 12px 14px 95px 14px;
        padding-left: max(14px, env(safe-area-inset-left));
        padding-right: max(14px, env(safe-area-inset-right));
        width: 100%;
        max-width: 100vw;
        box-sizing: border-box;
        overflow-x: hidden;
    }

    .page-header {
        padding: 8px 12px;
        padding-left: max(12px, env(safe-area-inset-left));
        padding-right: max(12px, env(safe-area-inset-right));
        position: sticky;
        top: 0;
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex-wrap: nowrap;
        gap: 8px;
        min-height: 52px;
        height: 52px;
        width: 100%;
        max-width: 100vw;
        box-sizing: border-box;
        overflow: hidden;
        z-index: 100;
    }

    .header-left {
        display: flex;
        align-items: center;
        gap: 8px;
        min-width: 0;
        flex: 1 1 auto;
        overflow: hidden;
    }

    .header-right {
        display: flex;
        align-items: center;
        gap: 6px;
        flex-shrink: 0;
    }

    .page-header h1 {
        font-size: 1.05rem;
        font-weight: 700;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        flex: 1 1 auto;
        min-width: 0;
        max-width: 100%;
        line-height: 1.2;
    }

    /* Mobile menu toggle button */
    .mobile-menu-toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        min-width: 36px;
        min-height: 36px;
        border-radius: var(--radius-md);
        border: 1px solid var(--border-color);
        background: var(--bg-card);
        color: var(--text-primary);
        font-size: 1.2rem;
        cursor: pointer;
        padding: 0;
        flex-shrink: 0;
        transition: background var(--transition-fast);
    }

    .mobile-menu-toggle:hover {
        background: var(--bg-card-hover);
    }

    /* Hide desktop-only controls on mobile header */
    .header-desktop-only {
        display: none !important;
    }

    /* Fix theme & notification button text on mobile */
    #theme-toggle-btn #theme-text,
    #theme-toggle-btn .theme-text,
    #voice-notify-btn #voice-notify-text {
        display: none !important;
    }

    #theme-toggle-btn,
    #voice-notify-btn {
        width: 36px;
        height: 36px;
        min-height: 36px;
        min-width: 36px;
        padding: 0;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        border-radius: var(--radius-full);
        font-size: 15px;
        flex-shrink: 0;
    }

    /* CRITICAL FIX FOR MOBILE OVERFLOW:
       Hide desktop action buttons from mobile header!
       On mobile, large touch-friendly buttons are provided in .mobile-action-bar at the top of the body. */
    .header-actions {
        display: none !important;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-sm);
    }

    .alerts-grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    /* Modal improvements on Mobile */
    .modal {
        width: 95%;
        max-width: 95%;
        margin: var(--space-sm);
        border-radius: var(--radius-lg);
    }

    .modal-header {
        padding: var(--space-md);
    }

    .modal-body {
        padding: var(--space-md);
        max-height: 72vh;
        overflow-y: auto;
    }

    .modal-footer {
        padding: var(--space-sm) var(--space-md);
        flex-wrap: wrap;
    }

    .modal-footer .btn {
        flex: 1;
        justify-content: center;
        padding: var(--space-sm) var(--space-md);
    }

    /* Tabs Filter Pills on Mobile */
    .tabs {
        overflow-x: auto;
        white-space: nowrap;
        flex-wrap: nowrap;
        gap: 6px;
        border-bottom: none;
        padding-bottom: 6px;
        margin-bottom: var(--space-md);
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }

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

    .tab-btn {
        padding: 6px 14px;
        border-radius: var(--radius-full);
        background: var(--bg-card);
        border: 1px solid var(--border-color);
        font-size: var(--font-size-xs);
        white-space: nowrap;
    }

    .tab-btn.active {
        background: var(--accent-primary);
        color: #ffffff;
        border-color: var(--accent-primary);
    }

    /* Calendar Grid on Mobile */
    .calendar-grid {
        font-size: 0.7rem;
        width: 100%;
        max-width: 100%;
    }

    .calendar-header-cell,
    .calendar-cell {
        min-width: 0;
        overflow: hidden;
    }

    .calendar-header-cell {
        padding: 4px 1px;
        font-size: 0.65rem;
        text-align: center;
    }

    .calendar-cell {
        min-height: 44px;
        padding: 2px 1px;
    }

    .calendar-date {
        font-size: 0.68rem;
        margin-bottom: 1px;
    }

    .calendar-event {
        font-size: 0.6rem;
        padding: 1px 2px;
        border-radius: 2px;
        max-width: 100%;
        overflow: hidden;
        text-overflow: ellipsis;
        display: block;
    }

    /* Transform Tables into Clean Vertical Mobile Cards (ZERO HORIZONTAL SCROLL) */
    .table-container {
        border: none;
        overflow-x: visible;
        background: transparent;
        box-shadow: none;
        padding: 0;
    }

    .responsive-table {
        display: block;
        width: 100%;
        border: none;
    }

    .responsive-table thead {
        display: none;
    }

    .responsive-table tbody {
        display: flex;
        flex-direction: column;
        gap: var(--space-md);
        width: 100%;
    }

    .responsive-table tr {
        display: flex;
        flex-direction: column;
        background: var(--bg-card);
        border: 1px solid var(--border-color);
        border-radius: var(--radius-lg);
        padding: var(--space-md);
        box-shadow: var(--shadow-sm);
        width: 100%;
        box-sizing: border-box;
        gap: 6px;
    }

    .responsive-table tr:hover {
        background: var(--bg-card);
        box-shadow: var(--shadow-md);
    }

    .responsive-table td {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 4px 0;
        border: none;
        border-bottom: 1px dashed var(--border-subtle);
        font-size: var(--font-size-sm);
        text-align: right;
        width: 100%;
        box-sizing: border-box;
    }

    .responsive-table td:last-child {
        border-bottom: none;
        padding-top: var(--space-xs);
        padding-bottom: 0;
    }

    .responsive-table td::before {
        content: attr(data-label);
        font-weight: 600;
        font-size: var(--font-size-xs);
        color: var(--text-muted);
        text-align: left;
        margin-right: var(--space-sm);
        white-space: nowrap;
        flex-shrink: 0;
    }

    /* Card Title (First TD: Member name or Session date) */
    .responsive-table td.cell-title,
    .responsive-table td:first-child {
        font-size: var(--font-size-base);
        font-weight: 700;
        border-bottom: 1px solid var(--border-color);
        padding-bottom: var(--space-xs);
        margin-bottom: 2px;
        text-align: left;
    }

    .responsive-table td.cell-title::before,
    .responsive-table td:first-child::before {
        display: none;
    }

    /* Action Buttons Row on Mobile */
    .responsive-table td.cell-actions,
    .responsive-table td[data-label="Thao tác"] {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
        margin-top: 8px;
        padding-top: 10px;
        border-top: 1px solid var(--border-subtle);
    }

    .responsive-table td.cell-actions::before,
    .responsive-table td[data-label="Thao tác"]::before {
        display: none;
    }

    .responsive-table td.cell-actions .btn,
    .responsive-table td[data-label="Thao tác"] .btn {
        flex: 1 1 calc(50% - 6px);
        min-height: 40px;
        justify-content: center;
        padding: 8px 12px;
        font-size: 13px;
        font-weight: 600;
        border-radius: var(--radius-md);
        white-space: nowrap;
    }

    /* Hide redundant duplicate fields on mobile cards where header already includes them */
    #members-table td[data-label="HSSV"],
    #sessions-table td[data-label="Loại"],
    #sessions-table td[data-label="Thời lượng"],
    #ms-table td[data-label="Trạng thái"],
    #ms-table td[data-label="Số tiền"] {
        display: none !important;
    }

    /* Mobile Bottom Navigation Bar */
    .mobile-bottom-nav {
        display: flex;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        height: 62px;
        background: var(--bg-secondary);
        border-top: 1px solid var(--border-color);
        z-index: 100;
        justify-content: space-between;
        align-items: center;
        padding: 4px 2px;
        padding-bottom: max(6px, env(safe-area-inset-bottom, 6px));
        box-shadow: 0 -3px 12px rgba(0, 0, 0, 0.05);
    }

    .mobile-bottom-nav .nav-item {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 2px;
        padding: 4px 1px;
        font-size: 0.65rem;
        font-weight: 500;
        text-align: center;
        border-radius: var(--radius-sm);
        color: var(--text-muted);
        flex: 1 1 0;
        min-width: 0;
        width: auto;
        border: none;
        background: transparent;
        cursor: pointer;
        transition: color var(--transition-fast);
        -webkit-tap-highlight-color: transparent;
    }

    .mobile-bottom-nav .nav-item span:not(.nav-icon) {
        display: block;
        width: 100%;
        font-size: 0.63rem;
        line-height: 1.1;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .mobile-bottom-nav .nav-item.active {
        color: var(--accent-primary);
        font-weight: 700;
        background: transparent;
    }

    .mobile-bottom-nav .nav-item .nav-icon {
        font-size: 1.18rem;
        width: auto;
        line-height: 1;
    }

    /* Cashflow & Revenue Section on Mobile */
    .cashflow-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-sm);
    }

    .cashflow-controls {
        width: 100%;
    }

    .cashflow-month-select {
        width: 100%;
    }

    .cashflow-stats-grid {
        grid-template-columns: 1fr;
        gap: var(--space-sm);
    }

    .cashflow-card {
        padding: var(--space-md);
    }

    .cashflow-ledger-header {
        flex-direction: column;
        align-items: stretch;
        gap: var(--space-sm);
    }

    .cashflow-tabs {
        width: 100%;
        overflow-x: auto;
        flex-wrap: nowrap;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        padding-bottom: 4px;
    }

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

    .cashflow-tab-btn {
        white-space: nowrap;
        flex-shrink: 0;
    }

    .cashflow-search-wrap {
        max-width: 100%;
        width: 100%;
    }

    .revenue-breakdown-box {
        padding: var(--space-md);
    }

    .revenue-plan-tags {
        gap: 6px;
    }

    .revenue-plan-tag {
        font-size: 11px;
        padding: 3px 8px;
    }
}

/* Mobile Action Bar: Prominent, high-visibility button at top of page body */
.mobile-action-bar {
    display: none;
}

/* Mobile menu toggle button default (hidden on desktop) */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
}

@media (max-width: 768px) {
    .mobile-action-bar {
        display: flex;
        gap: 8px;
        margin-bottom: var(--space-md);
        width: 100%;
    }

    .mobile-action-bar .btn {
        min-height: 46px;
        font-size: 14px;
        font-weight: 700;
        border-radius: 12px;
        box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        padding: 10px 16px;
    }
}

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

    .page-header h1 {
        font-size: 0.95rem;
    }

    .login-screen {
        padding: var(--space-md);
    }

    .login-card {
        padding: var(--space-xl) var(--space-md);
    }

    .btn {
        min-height: 40px;
        font-size: var(--font-size-sm);
    }

    .btn-sm {
        min-height: 34px;
        font-size: 12px;
    }

    .modal {
        width: 96%;
        max-width: 96%;
        margin: 6px;
    }

    .modal-body {
        padding: var(--space-sm) var(--space-md);
        max-height: 75vh;
    }

    .modal-footer {
        padding: var(--space-sm);
        gap: 6px;
    }

    .mobile-bottom-nav .nav-item {
        font-size: 0.60rem;
        padding: 3px 1px;
    }

    .mobile-bottom-nav .nav-item span:not(.nav-icon) {
        font-size: 0.58rem;
    }

    .mobile-bottom-nav .nav-item .nav-icon {
        font-size: 1.12rem;
    }
}

@media (max-width: 360px) {
    .mobile-bottom-nav {
        height: 56px;
        padding: 2px 0;
        padding-bottom: max(4px, env(safe-area-inset-bottom, 4px));
    }

    .mobile-bottom-nav .nav-item {
        padding: 2px 0;
        gap: 1px;
    }

    .mobile-bottom-nav .nav-item span:not(.nav-icon) {
        font-size: 0.54rem;
    }

    .mobile-bottom-nav .nav-item .nav-icon {
        font-size: 1.05rem;
    }

    .page-header h1 {
        font-size: 0.88rem;
    }
}

/* ---------- Login Screen ---------- */
.login-screen {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
    padding: var(--space-xl);
}

.login-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    width: 100%;
    max-width: 400px;
    text-align: center;
    box-shadow: var(--shadow-lg);
}

.login-card .brand-icon {
    font-size: 3rem;
    margin-bottom: var(--space-md);
}

.login-card h1 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--space-xs);
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-extra));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login-card .subtitle {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-xl);
}

/* ---------- Utility ---------- */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-muted); }
.text-success { color: var(--accent-success); }
.text-danger { color: var(--accent-danger); }
.text-warning { color: var(--accent-warning); }
.text-primary { color: var(--accent-primary); }
.text-extra { color: var(--accent-extra); }
.font-mono { font-family: 'JetBrains Mono', monospace; }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.w-full { width: 100%; }
.hidden { display: none !important; }

/* Sidebar User Footer */
.sidebar-footer {
    padding: var(--space-md);
    border-top: 1px solid var(--border-color);
    background: var(--bg-card);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-xs);
}

.sidebar-user-card {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    min-width: 0;
}

.sidebar-user-avatar {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    background: var(--accent-primary-glow);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
}

.sidebar-user-info {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.sidebar-user-name {
    font-size: var(--font-size-xs);
    font-weight: 700;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-user-role {
    font-size: 10px;
    color: var(--text-muted);
}

.sidebar-user-actions {
    display: flex;
    gap: 4px;
}

.btn-sidebar-icon {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 6px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    transition: background var(--transition-fast);
}

.btn-sidebar-icon:hover {
    background: var(--bg-card-hover);
}

.header-user-badge {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

/* Voice & Chime Notification Button */
.btn-voice-active {
    background: rgba(16, 185, 129, 0.15) !important;
    color: #10b981 !important;
    border: 1px solid rgba(16, 185, 129, 0.45) !important;
    box-shadow: 0 0 12px rgba(16, 185, 129, 0.25) !important;
    font-weight: 700 !important;
}

.btn-voice-active:hover {
    background: rgba(16, 185, 129, 0.25) !important;
}

/* ================================================================
   CASHFLOW & REVENUE SECTION (DASHBOARD)
   ================================================================ */
.cashflow-section {
    margin-top: var(--space-xl);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    background: var(--bg-card);
}

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

.cashflow-title-wrap {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.cashflow-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.cashflow-controls {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.cashflow-month-select {
    padding: 7px 12px;
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    background: var(--bg-secondary);
    color: var(--text-primary);
    cursor: pointer;
    outline: none;
    transition: border-color var(--transition-fast);
}

.cashflow-month-select:focus {
    border-color: var(--accent-primary);
}

/* 3-card grid for Cashflow metrics */
.cashflow-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.cashflow-card {
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-subtle);
    background: var(--bg-secondary);
    position: relative;
    overflow: hidden;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

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

.cashflow-card-inflow {
    border-left: 4px solid var(--accent-success);
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.06) 0%, var(--bg-secondary) 100%);
}

.cashflow-card-outflow {
    border-left: 4px solid var(--accent-danger);
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.06) 0%, var(--bg-secondary) 100%);
}

.cashflow-card-profit {
    border-left: 4px solid var(--accent-primary);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.08) 0%, var(--bg-secondary) 100%);
}

.cashflow-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-xs);
}

.cashflow-card-title {
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}

.cashflow-card-icon {
    font-size: 1.3rem;
}

.cashflow-card-amount {
    font-size: 1.65rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: var(--space-xs);
    letter-spacing: -0.02em;
}

.cashflow-amount-in {
    color: var(--accent-success);
}

.cashflow-amount-out {
    color: var(--accent-danger);
}

.cashflow-card-details {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    line-height: 1.5;
}

.cashflow-card-details .highlight-warn {
    color: var(--accent-warning);
    font-weight: 600;
}

.cashflow-card-details .muted-cumul {
    color: var(--text-muted);
    font-size: 11px;
    margin-top: 4px;
    display: block;
}

/* Revenue breakdown by plan */
.revenue-breakdown-box {
    background: var(--bg-secondary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: var(--space-md) var(--space-lg);
    margin-bottom: var(--space-lg);
}

.revenue-breakdown-title {
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: var(--space-sm);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.revenue-plan-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.revenue-plan-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: var(--radius-full);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    font-size: var(--font-size-xs);
}

.revenue-plan-tag .plan-name {
    font-weight: 600;
    color: var(--text-primary);
}

.revenue-plan-tag .plan-amount {
    color: var(--accent-success);
    font-weight: 700;
}

.revenue-plan-tag .plan-count {
    color: var(--text-muted);
    font-size: 11px;
}

/* Cashflow tabbed ledger */
.cashflow-ledger-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.cashflow-tabs {
    display: flex;
    gap: var(--space-xs);
    border-bottom: none;
    margin-bottom: 0;
    flex-wrap: wrap;
}

.cashflow-tab-btn {
    padding: 7px 14px;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    font-size: var(--font-size-xs);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.cashflow-tab-btn:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

.cashflow-tab-btn.active {
    background: var(--accent-primary);
    color: #ffffff;
    box-shadow: var(--shadow-sm);
}

.cashflow-search-wrap {
    position: relative;
    max-width: 260px;
    width: 100%;
}

.cashflow-search-input {
    width: 100%;
    padding: 6px 12px 6px 30px;
    font-size: var(--font-size-xs);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.cashflow-search-icon {
    position: absolute;
    left: 9px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 12px;
    opacity: 0.6;
    pointer-events: none;
}

/* Amount pill badges inside tables */
.amount-badge-in {
    font-weight: 700;
    color: var(--accent-success);
    background: var(--accent-success-glow);
    padding: 3px 8px;
    border-radius: var(--radius-sm);
    display: inline-block;
    white-space: nowrap;
}

.amount-badge-out {
    font-weight: 700;
    color: var(--accent-danger);
    background: var(--accent-danger-glow);
    padding: 3px 8px;
    border-radius: var(--radius-sm);
    display: inline-block;
    white-space: nowrap;
}

.amount-badge-pending {
    font-weight: 700;
    color: var(--accent-warning);
    background: var(--accent-warning-glow);
    padding: 3px 8px;
    border-radius: var(--radius-sm);
    display: inline-block;
    white-space: nowrap;
}

/* Quick Pay Button */
.btn-quick-pay {
    padding: 3px 8px;
    font-size: 11px;
    font-weight: 600;
    background: rgba(16, 185, 129, 0.15);
    color: var(--accent-success);
    border: 1px solid rgba(16, 185, 129, 0.4);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-quick-pay:hover {
    background: var(--accent-success);
    color: #ffffff;
}

/* Payment Status Cell & Edit Button */
.payment-status-cell {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.btn-status-edit {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    padding: 0;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    color: var(--text-muted);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-status-edit:hover {
    background: var(--accent-primary-glow);
    color: var(--accent-primary);
    border-color: var(--accent-primary);
    transform: scale(1.08);
}

.cashflow-card-unpaid {
    border-left: 4px solid var(--accent-warning);
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.08) 0%, var(--bg-secondary) 100%);
}

.cashflow-section .responsive-table td[data-label="Trạng thái"],
.cashflow-section .responsive-table td[data-label="Số tiền"] {
    display: flex !important;
}

/* Filter pills for sub-filtering */
.filter-pills {
    display: flex;
    gap: var(--space-xs);
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: var(--space-md);
}

.filter-pill {
    padding: 6px 14px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    border: 1px solid var(--border-color);
    background: var(--bg-secondary);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-pill:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

.filter-pill.active {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: #fff;
}

.filter-pill.active-warn {
    background: var(--accent-warning);
    border-color: var(--accent-warning);
    color: #000;
}

.tab-badge-warn {
    background: var(--accent-warning);
    color: #000;
    font-size: 10px;
    padding: 2px 7px;
    border-radius: var(--radius-full);
    font-weight: 700;
    margin-left: 6px;
    vertical-align: middle;
}

.btn-quick-pay {
    background: var(--accent-success);
    color: #fff;
    border: none;
    font-weight: 600;
    font-size: 11px;
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-quick-pay:hover {
    filter: brightness(1.1);
    transform: translateY(-1px);
}