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

/* ============================================================
   DESIGN TOKENS
   ============================================================ */
:root {
    /* Backgrounds */
    --bg-app:        #F2F2F7;
    --bg-surface:    #FFFFFF;
    --bg-surface-2:  #F8F8FA;
    --bg-surface-3:  #F0F0F5;

    /* Sidebar */
    --sidebar-bg:        #1C1C1E;
    --sidebar-bg-hover:  #2C2C2E;
    --sidebar-active:    #007AFF;
    --sidebar-text:      #EBEBF5CC;
    --sidebar-text-dim:  #8E8E9399;
    --sidebar-border:    #38383A;
    --sidebar-width:     240px;

    /* Text */
    --text-primary:   #1C1C1E;
    --text-secondary: #6C6C70;
    --text-tertiary:  #AEAEB2;
    --text-inverse:   #FFFFFF;

    /* Borders */
    --border:        #E4E4EB;
    --border-strong: #C7C7CC;

    /* Brand */
    --accent:          #007AFF;
    --accent-hover:    #0062CC;
    --accent-light:    #E8F1FF;
    --success:         #34C759;
    --success-light:   #E8F9ED;
    --warning:         #FF9500;
    --warning-light:   #FFF3E0;
    --danger:          #FF3B30;
    --danger-light:    #FFEBEA;
    --info:            #5AC8FA;
    --info-light:      #EAF6FD;

    /* Shadows */
    --shadow-xs: 0 1px 2px rgba(0,0,0,.06);
    --shadow-sm: 0 1px 4px rgba(0,0,0,.08), 0 2px 8px rgba(0,0,0,.04);
    --shadow-md: 0 4px 16px rgba(0,0,0,.10), 0 2px 6px rgba(0,0,0,.05);
    --shadow-lg: 0 8px 32px rgba(0,0,0,.12), 0 4px 12px rgba(0,0,0,.06);

    /* Radius */
    --r-xs: 4px;
    --r-sm: 8px;
    --r-md: 12px;
    --r-lg: 16px;
    --r-xl: 20px;
    --r-full: 9999px;

    /* Typography */
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;

    /* Transitions */
    --transition: 180ms ease;
}

/* ============================================================
   RESET & BASE
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
    font-family: var(--font);
    font-size: 14px;
    line-height: 1.5;
    color: var(--text-primary);
    background: var(--bg-app);
    -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

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

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

/* ============================================================
   LAYOUT
   ============================================================ */
.app-shell { display: flex; min-height: 100vh; }

.sidebar {
    position: fixed;
    top: 0; left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--sidebar-bg);
    display: flex;
    flex-direction: column;
    z-index: 100;
    overflow-y: auto;
    transition: transform var(--transition);
}

.main-content {
    margin-left: var(--sidebar-width);
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
}

.topbar {
    position: sticky;
    top: 0;
    z-index: 50;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border);
    padding: 0 24px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: var(--shadow-xs);
}

.page-body {
    padding: 28px 24px;
    flex: 1;
}

/* ============================================================
   SIDEBAR
   ============================================================ */
.sidebar-logo {
    padding: 20px 20px 16px;
    border-bottom: 1px solid var(--sidebar-border);
    flex-shrink: 0;
}

.sidebar-logo-mark {
    display: flex;
    align-items: center;
    gap: 10px;
}

.sidebar-logo-icon {
    width: 36px; height: 36px;
    background: var(--accent);
    border-radius: var(--r-sm);
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
}

.sidebar-logo-icon svg { width: 20px; height: 20px; fill: #fff; }

.sidebar-logo-text {
    display: flex; flex-direction: column;
}

.sidebar-logo-name {
    font-size: 15px;
    font-weight: 700;
    color: #FFFFFF;
    letter-spacing: -0.2px;
}

.sidebar-logo-tagline {
    font-size: 10px;
    color: var(--sidebar-text-dim);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.sidebar-nav {
    padding: 12px 0;
    flex: 1;
}

.sidebar-section-label {
    padding: 8px 20px 4px;
    font-size: 10px;
    font-weight: 600;
    color: var(--sidebar-text-dim);
    text-transform: uppercase;
    letter-spacing: 0.8px;
}

.sidebar-nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 20px;
    color: var(--sidebar-text);
    font-size: 13.5px;
    font-weight: 500;
    cursor: pointer;
    transition: background var(--transition), color var(--transition);
    border-radius: 0;
    margin: 1px 8px;
    border-radius: var(--r-sm);
    text-decoration: none;
}

.sidebar-nav-item:hover {
    background: var(--sidebar-bg-hover);
    color: #FFFFFF;
    text-decoration: none;
}

.sidebar-nav-item.active {
    background: var(--accent);
    color: #FFFFFF;
}

.sidebar-nav-item svg {
    width: 18px; height: 18px;
    opacity: .8;
    flex-shrink: 0;
}

.sidebar-nav-item.active svg { opacity: 1; }

.sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--sidebar-border);
    flex-shrink: 0;
}

.sidebar-user {
    display: flex; align-items: center; gap: 10px;
}

.sidebar-user-avatar {
    width: 32px; height: 32px;
    background: var(--accent);
    border-radius: var(--r-full);
    display: flex; align-items: center; justify-content: center;
    font-size: 12px; font-weight: 700; color: #fff;
    flex-shrink: 0;
}

.sidebar-user-info { flex: 1; min-width: 0; }

.sidebar-user-name {
    font-size: 13px; font-weight: 600; color: #FFFFFF;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

.sidebar-user-role {
    font-size: 11px; color: var(--sidebar-text-dim);
}

.sidebar-logout {
    display: flex; align-items: center; justify-content: center;
    width: 28px; height: 28px;
    color: var(--sidebar-text-dim);
    border-radius: var(--r-sm);
    transition: color var(--transition), background var(--transition);
    flex-shrink: 0;
}

.sidebar-logout:hover { color: var(--danger); background: rgba(255,59,48,.12); text-decoration: none; }
.sidebar-logout svg { width: 16px; height: 16px; }

/* ============================================================
   TOPBAR
   ============================================================ */
.topbar-left { display: flex; align-items: center; gap: 12px; }
.topbar-right { display: flex; align-items: center; gap: 8px; }

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

.topbar-breadcrumb {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--text-secondary);
}

.topbar-breadcrumb a { color: var(--text-secondary); }
.topbar-breadcrumb a:hover { color: var(--accent); text-decoration: none; }
.topbar-breadcrumb-sep { color: var(--text-tertiary); }
.topbar-breadcrumb-current { color: var(--text-primary); font-weight: 500; }

.mobile-menu-btn {
    display: none;
    width: 36px; height: 36px;
    align-items: center; justify-content: center;
    background: none;
    border: none;
    cursor: pointer;
    border-radius: var(--r-sm);
    color: var(--text-secondary);
}

.mobile-menu-btn:hover { background: var(--bg-surface-2); }
.mobile-menu-btn svg { width: 20px; height: 20px; }

/* ============================================================
   PAGE HEADER
   ============================================================ */
.page-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 24px;
    gap: 16px;
    flex-wrap: wrap;
}

.page-header-left { min-width: 0; }

.page-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.3px;
}

.page-subtitle {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 2px;
}

.page-header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

/* ============================================================
   CARDS
   ============================================================ */
.card {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--r-lg);
    box-shadow: var(--shadow-sm);
}

.card-header {
    padding: 18px 20px 14px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

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

.card-subtitle {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 1px;
}

.card-body { padding: 20px; }

.card-footer {
    padding: 14px 20px;
    border-top: 1px solid var(--border);
    background: var(--bg-surface-2);
    border-radius: 0 0 var(--r-lg) var(--r-lg);
}

/* ============================================================
   STAT CARDS
   ============================================================ */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--r-lg);
    padding: 20px;
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    gap: 16px;
}

.stat-card-icon {
    width: 48px; height: 48px;
    border-radius: var(--r-md);
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
}

.stat-card-icon svg { width: 24px; height: 24px; }
.stat-card-icon.blue   { background: var(--accent-light);   color: var(--accent); }
.stat-card-icon.green  { background: var(--success-light);  color: var(--success); }
.stat-card-icon.orange { background: var(--warning-light);  color: var(--warning); }
.stat-card-icon.red    { background: var(--danger-light);   color: var(--danger); }

.stat-card-value {
    font-size: 26px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
}

.stat-card-label {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 3px;
    font-weight: 500;
}

/* ============================================================
   TABLES
   ============================================================ */
.table-wrap {
    overflow-x: auto;
    border-radius: var(--r-lg);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    background: var(--bg-surface);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13.5px;
}

thead th {
    padding: 12px 16px;
    background: var(--bg-surface-2);
    text-align: left;
    font-size: 11px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}

tbody td {
    padding: 13px 16px;
    border-bottom: 1px solid var(--border);
    color: var(--text-primary);
    vertical-align: middle;
}

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

tbody tr:hover { background: var(--bg-surface-2); }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 16px;
    font-size: 13.5px;
    font-weight: 500;
    font-family: var(--font);
    border-radius: var(--r-sm);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    line-height: 1.4;
    text-decoration: none;
    white-space: nowrap;
}

.btn:hover { text-decoration: none; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

.btn svg { width: 15px; height: 15px; flex-shrink: 0; }

/* Sizes */
.btn-sm { padding: 5px 11px; font-size: 12.5px; }
.btn-sm svg { width: 14px; height: 14px; }
.btn-lg { padding: 11px 22px; font-size: 15px; }
.btn-lg svg { width: 17px; height: 17px; }

/* Primary */
.btn-primary {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: #fff; }

/* Secondary */
.btn-secondary {
    background: var(--bg-surface);
    color: var(--text-primary);
    border-color: var(--border-strong);
}
.btn-secondary:hover { background: var(--bg-surface-2); border-color: var(--border-strong); color: var(--text-primary); }

/* Danger */
.btn-danger {
    background: var(--danger);
    color: #fff;
    border-color: var(--danger);
}
.btn-danger:hover { background: #D93025; border-color: #D93025; color: #fff; }

/* Ghost */
.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border-color: transparent;
}
.btn-ghost:hover { background: var(--bg-surface-2); color: var(--text-primary); }

/* Icon only */
.btn-icon {
    padding: 7px;
    width: 32px; height: 32px;
}
.btn-icon.btn-sm { padding: 5px; width: 28px; height: 28px; }

/* ============================================================
   FORMS
   ============================================================ */
.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group.col-span-2 { grid-column: span 2; }
.form-group.col-span-3 { grid-column: span 3; }
.form-group.col-full   { grid-column: 1 / -1; }

label {
    font-size: 12.5px;
    font-weight: 600;
    color: var(--text-primary);
}

label .required { color: var(--danger); margin-left: 2px; }

.form-control {
    width: 100%;
    padding: 9px 13px;
    font-size: 14px;
    font-family: var(--font);
    color: var(--text-primary);
    background: var(--bg-surface);
    border: 1px solid var(--border-strong);
    border-radius: var(--r-sm);
    outline: none;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.form-control:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(0,122,255,.12);
}

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

textarea.form-control {
    resize: vertical;
    min-height: 90px;
}

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%238E8E93' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14L2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 32px;
}

.form-hint {
    font-size: 11.5px;
    color: var(--text-secondary);
}

.form-error {
    font-size: 11.5px;
    color: var(--danger);
}

.form-section {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--r-lg);
    overflow: hidden;
    margin-bottom: 20px;
    box-shadow: var(--shadow-sm);
}

.form-section-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    background: var(--bg-surface-2);
    display: flex;
    align-items: center;
    gap: 10px;
}

.form-section-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.form-section-icon {
    width: 28px; height: 28px;
    border-radius: var(--r-xs);
    background: var(--accent-light);
    display: flex; align-items: center; justify-content: center;
    color: var(--accent);
}

.form-section-icon svg { width: 15px; height: 15px; }

.form-section-body { padding: 20px; }

/* ============================================================
   BADGES / TAGS
   ============================================================ */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 9px;
    font-size: 11.5px;
    font-weight: 600;
    border-radius: var(--r-full);
}

.badge-blue    { background: var(--accent-light);   color: var(--accent); }
.badge-green   { background: var(--success-light);  color: var(--success); }
.badge-orange  { background: var(--warning-light);  color: var(--warning); }
.badge-red     { background: var(--danger-light);   color: var(--danger); }
.badge-gray    { background: var(--bg-surface-3);   color: var(--text-secondary); }

/* ============================================================
   ACTION BUTTONS (table)
   ============================================================ */
.table-actions { display: flex; align-items: center; gap: 6px; }

.action-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px; height: 30px;
    border-radius: var(--r-sm);
    border: 1px solid var(--border);
    background: var(--bg-surface);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
}

.action-btn:hover { text-decoration: none; }
.action-btn svg { width: 14px; height: 14px; }
.action-btn.view:hover  { background: var(--accent-light);  border-color: var(--accent);   color: var(--accent); }
.action-btn.edit:hover  { background: var(--warning-light); border-color: var(--warning);  color: var(--warning); }
.action-btn.delete:hover{ background: var(--danger-light);  border-color: var(--danger);   color: var(--danger); }

/* ============================================================
   ALERTS
   ============================================================ */
.alert {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 13px 16px;
    border-radius: var(--r-md);
    border: 1px solid;
    font-size: 13.5px;
    margin-bottom: 16px;
}

.alert svg { width: 18px; height: 18px; flex-shrink: 0; margin-top: 1px; }

.alert-success { background: var(--success-light); border-color: var(--success); color: #1a7a35; }
.alert-error   { background: var(--danger-light);  border-color: var(--danger);  color: #c0392b; }
.alert-warning { background: var(--warning-light); border-color: var(--warning); color: #b35900; }
.alert-info    { background: var(--info-light);    border-color: var(--info);    color: #1a6a8a; }

/* ============================================================
   PAYMENT PLAN TABLE
   ============================================================ */
.payment-table-wrap {
    border: 1px solid var(--border);
    border-radius: var(--r-md);
    overflow: hidden;
    background: var(--bg-surface);
}

.payment-table thead th {
    padding: 10px 12px;
    background: var(--bg-surface-2);
    font-size: 11px;
    text-align: left;
}

.payment-table tbody td { padding: 10px 12px; }

.payment-row-paid { background: #f0fbf4 !important; }
.payment-row-paid td { color: var(--text-secondary); }

.currency-select {
    min-width: 72px;
    padding: 6px 28px 6px 10px;
    font-size: 13px;
}

.payment-amount-input {
    width: 130px;
    padding: 6px 10px;
    font-size: 13px;
}

.date-input {
    width: 140px;
    padding: 6px 10px;
    font-size: 13px;
}

.payment-totals {
    background: var(--bg-surface-2);
    border-top: 2px solid var(--border);
    padding: 14px 16px;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 32px;
    font-size: 14px;
}

.payment-total-item { display: flex; flex-direction: column; align-items: flex-end; gap: 2px; }
.payment-total-label { font-size: 11px; font-weight: 600; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.4px; }
.payment-total-value { font-size: 17px; font-weight: 700; color: var(--text-primary); }
.payment-total-value.remaining { color: var(--danger); }
.payment-total-value.paid-total { color: var(--success); }

/* ============================================================
   PAGINATION
   ============================================================ */
.pagination {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 20px;
    border-top: 1px solid var(--border);
    background: var(--bg-surface);
    border-radius: 0 0 var(--r-lg) var(--r-lg);
    font-size: 13px;
}

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

.pagination-links { display: flex; gap: 4px; }

.page-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 32px; height: 32px;
    padding: 0 8px;
    border-radius: var(--r-sm);
    border: 1px solid var(--border);
    background: var(--bg-surface);
    color: var(--text-primary);
    font-size: 13px;
    font-weight: 500;
    text-decoration: none;
    transition: all var(--transition);
}

.page-link:hover { background: var(--bg-surface-2); text-decoration: none; }
.page-link.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.page-link.disabled { opacity: .4; pointer-events: none; }

/* ============================================================
   SEARCH BAR
   ============================================================ */
.search-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 14px 20px;
    border-bottom: 1px solid var(--border);
    background: var(--bg-surface);
    flex-wrap: wrap;
}

.search-input-wrap {
    position: relative;
    flex: 1;
    min-width: 200px;
    max-width: 360px;
}

.search-input-wrap svg {
    position: absolute;
    left: 11px; top: 50%;
    transform: translateY(-50%);
    width: 16px; height: 16px;
    color: var(--text-tertiary);
    pointer-events: none;
}

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

/* ============================================================
   LOGIN PAGE
   ============================================================ */
.login-page {
    min-height: 100vh;
    background: var(--bg-app);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-card {
    width: 100%;
    max-width: 400px;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--r-xl);
    box-shadow: var(--shadow-lg);
    padding: 40px;
}

.login-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 32px;
    justify-content: center;
}

.login-logo-icon {
    width: 48px; height: 48px;
    background: var(--accent);
    border-radius: var(--r-md);
    display: flex; align-items: center; justify-content: center;
}

.login-logo-icon svg { width: 28px; height: 28px; fill: #fff; }

.login-logo-text {
    display: flex; flex-direction: column;
}

.login-logo-name {
    font-size: 22px; font-weight: 800;
    color: var(--text-primary); letter-spacing: -0.5px;
}

.login-logo-sub {
    font-size: 12px; color: var(--text-secondary);
    font-weight: 500;
}

.login-title {
    font-size: 20px; font-weight: 700;
    color: var(--text-primary); margin-bottom: 4px;
    text-align: center;
}

.login-subtitle {
    font-size: 13px; color: var(--text-secondary);
    text-align: center; margin-bottom: 28px;
}

.login-card .form-group { margin-bottom: 16px; }
.login-card label { font-size: 13px; }

.login-btn {
    width: 100%;
    padding: 12px;
    font-size: 15px;
    font-weight: 600;
    margin-top: 8px;
    border-radius: var(--r-md);
}

/* ============================================================
   DETAIL VIEW
   ============================================================ */
.detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.detail-item { display: flex; flex-direction: column; gap: 3px; }
.detail-label { font-size: 11px; font-weight: 600; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.5px; }
.detail-value { font-size: 14px; color: var(--text-primary); font-weight: 500; }
.detail-value.empty { color: var(--text-tertiary); font-style: italic; font-weight: 400; }

/* ============================================================
   EMPTY STATE
   ============================================================ */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    text-align: center;
}

.empty-state-icon {
    width: 64px; height: 64px;
    background: var(--bg-surface-3);
    border-radius: var(--r-xl);
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 16px;
    color: var(--text-tertiary);
}

.empty-state-icon svg { width: 32px; height: 32px; }
.empty-state-title { font-size: 16px; font-weight: 600; color: var(--text-primary); margin-bottom: 6px; }
.empty-state-desc  { font-size: 13px; color: var(--text-secondary); margin-bottom: 20px; }

/* ============================================================
   TICKET PRIORITY
   ============================================================ */
.priority-low    { background: var(--success-light);  color: var(--success); }
.priority-medium { background: var(--accent-light);   color: var(--accent); }
.priority-high   { background: var(--warning-light);  color: var(--warning); }
.priority-urgent { background: var(--danger-light);   color: var(--danger); }

.status-open        { background: var(--accent-light);  color: var(--accent); }
.status-in_progress { background: var(--warning-light); color: var(--warning); }
.status-closed      { background: var(--bg-surface-3);  color: var(--text-secondary); }

/* ============================================================
   CHECKBOX (custom)
   ============================================================ */
.checkbox-wrap {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    user-select: none;
}

.checkbox-wrap input[type="checkbox"] { display: none; }

.checkbox-box {
    width: 18px; height: 18px;
    border: 2px solid var(--border-strong);
    border-radius: 4px;
    background: var(--bg-surface);
    display: flex; align-items: center; justify-content: center;
    transition: all var(--transition);
    flex-shrink: 0;
}

.checkbox-wrap input:checked + .checkbox-box {
    background: var(--success);
    border-color: var(--success);
}

.checkbox-box svg { width: 11px; height: 11px; color: #fff; display: none; }
.checkbox-wrap input:checked + .checkbox-box svg { display: block; }

/* ============================================================
   MODAL
   ============================================================ */
.modal-overlay {
    position: fixed; inset: 0;
    background: rgba(0,0,0,.45);
    display: flex; align-items: center; justify-content: center;
    z-index: 200;
    padding: 20px;
    opacity: 0; pointer-events: none;
    transition: opacity var(--transition);
}

.modal-overlay.open { opacity: 1; pointer-events: all; }

.modal {
    background: var(--bg-surface);
    border-radius: var(--r-xl);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 480px;
    transform: scale(.97);
    transition: transform var(--transition);
}

.modal-overlay.open .modal { transform: scale(1); }

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

.modal-title { font-size: 16px; font-weight: 700; }

.modal-close {
    width: 28px; height: 28px;
    border-radius: var(--r-sm);
    border: none; background: none;
    color: var(--text-secondary); cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    transition: background var(--transition);
}

.modal-close:hover { background: var(--bg-surface-2); }
.modal-close svg { width: 16px; height: 16px; }

.modal-body { padding: 20px 24px; }

.modal-footer {
    padding: 16px 24px 20px;
    display: flex; justify-content: flex-end; gap: 8px;
}

/* ============================================================
   UTILITIES
   ============================================================ */
.d-flex   { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-8  { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.mt-4  { margin-top: 4px; }
.mt-8  { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.text-secondary { color: var(--text-secondary); }
.text-sm { font-size: 12px; }
.fw-600  { font-weight: 600; }
.fw-700  { font-weight: 700; }
.w-full  { width: 100%; }
.text-right { text-align: right; }

/* TinyMCE wrapper */
.tox-tinymce { border-radius: var(--r-sm) !important; border-color: var(--border-strong) !important; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
    .form-grid-3 { grid-template-columns: 1fr 1fr; }
    .form-group.col-span-3 { grid-column: span 2; }
}

@media (max-width: 768px) {
    :root { --sidebar-width: 0px; }

    .sidebar {
        transform: translateX(-240px);
        width: 240px;
    }

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

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

    .mobile-menu-btn { display: flex; }

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

    .form-group.col-span-2,
    .form-group.col-span-3,
    .form-group.col-full { grid-column: span 1; }

    .stats-grid { grid-template-columns: 1fr 1fr; }

    .page-body { padding: 16px; }

    .detail-grid { grid-template-columns: 1fr; }

    .topbar { padding: 0 16px; }

    .payment-totals { flex-direction: column; align-items: flex-start; gap: 12px; }

    .login-card { padding: 28px 24px; }
}

@media (max-width: 480px) {
    .stats-grid { grid-template-columns: 1fr; }
    .page-header { flex-direction: column; }
    .table-wrap { font-size: 12.5px; }
    thead th, tbody td { padding: 10px 12px; }
}

/* Sidebar overlay for mobile */
.sidebar-overlay {
    display: none;
    position: fixed; inset: 0;
    background: rgba(0,0,0,.4);
    z-index: 99;
}

.sidebar-overlay.open { display: block; }