/* ============================================
   Panel2 - Modern Design System
   CSS Variables, Flexbox/Grid, Animations
   ============================================ */

/* --- CSS Custom Properties (Theme) --- */
:root {
    /* Primary palette */
    --primary: #186FBB;
    --primary-light: #7fb3e3;
    --primary-dark: #0f5a9a;
    --primary-50: #e8f2fc;
    --primary-100: #d3e6f8;

    /* Accent */
    --accent: #06b6d4;
    --accent-light: #67e8f9;
    --accent-dark: #0891b2;

    /* Success / Warning / Danger / Info */
    --success: #22c55e;
    --success-light: #dcfce7;
    --success-dark: #16a34a;
    --warning: #f59e0b;
    --warning-light: #fef3c7;
    --warning-dark: #d97706;
    --danger: #ef4444;
    --danger-light: #fef2f2;
    --danger-dark: #dc2626;
    --info: #3b82f6;
    --info-light: #eff6ff;
    --info-dark: #2563eb;

    /* Neutrals */
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;

    /* Layout */
    --sidebar-width: 264px;
    --sidebar-collapsed-width: 68px;
    --topbar-height: 64px;
    --border-radius: 10px;
    --border-radius-lg: 14px;
    --border-radius-xl: 20px;

    /* Shadows – softer, more layered */
    --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 8px -2px rgba(0,0,0,0.08), 0 2px 4px -2px rgba(0,0,0,0.04);
    --shadow-lg: 0 12px 24px -4px rgba(0,0,0,0.08), 0 4px 8px -2px rgba(0,0,0,0.03);
    --shadow-xl: 0 24px 48px -8px rgba(0,0,0,0.1), 0 8px 16px -4px rgba(0,0,0,0.04);

    /* Colored glow */
    --shadow-primary: 0 4px 14px rgba(24, 111, 187, 0.25);

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(.4,0,.2,1);
    --transition-base: 250ms cubic-bezier(.4,0,.2,1);
    --transition-slow: 350ms cubic-bezier(.4,0,.2,1);

    /* Font */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    /* Background */
    --bg-body: #f4f6fb;
    --bg-card: #ffffff;
    --border-color: var(--gray-200);
}

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

html {
    font-size: 15px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    background: var(--bg-body);
    color: var(--gray-700);
    line-height: 1.6;
    min-height: 100vh;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

img {
    max-width: 100%;
    height: auto;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--gray-900);
}

h1 { font-size: 1.75rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.1rem; }

/* --- Layout: Sidebar + Main --- */
.app-layout {
    display: flex;
    min-height: 100vh;
}

/* --- Sidebar --- */
.sidebar {
    width: var(--sidebar-width);
    background: var(--gray-900);
    color: #fff;
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 1000;
    transition: transform var(--transition-base), width var(--transition-base);
    overflow-y: auto;
    overflow-x: hidden;
    border-right: 1px solid rgba(255,255,255,0.06);
}

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

.sidebar::-webkit-scrollbar-thumb {
    background: var(--gray-600);
    border-radius: 4px;
}

.sidebar-header {
    padding: 22px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    flex-shrink: 0;
}

.sidebar-header img {
    width:auto;
}

.sidebar-header .brand-text {
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    white-space: nowrap;
}

.sidebar-user {
    padding: 16px 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    flex-shrink: 0;
}

.sidebar-user .avatar {
    width: 36px;
    height: 36px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.9rem;
    flex-shrink: 0;
    background-size: cover;
    background-position: center;
}

.sidebar-user .user-info {
    overflow: hidden;
}

.sidebar-user .user-name {
    font-size: 0.875rem;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-user .user-role {
    font-size: 0.75rem;
    color: var(--gray-400);
}

.online-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--success);
    display: inline-block;
    margin-left: auto;
    flex-shrink: 0;
    animation: pulse-green 2s infinite;
}

@keyframes pulse-green {
    0%, 100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4); }
    50% { box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
}

/* Sidebar Navigation */
.sidebar-nav {
    flex: 1;
    padding: 12px 0;
}

.sidebar-nav .nav-section {
    padding: 8px 18px 4px;
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--gray-500);
    margin-top: 8px;
}

.sidebar-nav a,
.sidebar-nav .nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 9px 20px;
    margin: 1px 8px;
    color: var(--gray-400);
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
    position: relative;
    text-decoration: none;
    cursor: pointer;
}

.sidebar-nav a:hover,
.sidebar-nav .nav-link:hover {
    background: rgba(255,255,255,0.07);
    color: #fff;
}

.sidebar-nav a.active,
.sidebar-nav .nav-link.active {
    background: rgba(24, 111, 187, 0.15);
    color: #fff;
    border-right: none;
    box-shadow: inset 3px 0 0 var(--primary-light);
}

.sidebar-nav a i,
.sidebar-nav .nav-link i {
    width: 20px;
    text-align: center;
    font-size: 1rem;
    flex-shrink: 0;
}

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

/* Badge in sidebar */
.nav-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    padding: 0 6px;
    border-radius: 10px;
    font-size: 0.65rem;
    font-weight: 700;
    line-height: 1;
    flex-shrink: 0;
}

.nav-badge.badge-danger { background: var(--danger); color: #fff; }
.nav-badge.badge-success { background: var(--success); color: #fff; }
.nav-badge.badge-warning { background: var(--warning); color: #fff; }
.nav-badge.badge-info { background: var(--info); color: #fff; }
.nav-badge.badge-primary { background: var(--primary); color: #fff; }
.nav-badge.badge-accent { background: var(--accent-dark); color: #fff; }

/* Ticket-statusbolletjes in de navbar — 5 duidelijk onderscheidende kleuren */
.nav-badge.nav-tkt-open        { background: #64748b; color: #fff; }  /* Ingediend — neutraal/grijs */
.nav-badge.nav-tkt-behandeling { background: #f59e0b; color: #fff; }  /* In behandeling — amber (= badge-warning) */
.nav-badge.nav-tkt-wacht       { background: #3b82f6; color: #fff; }  /* Wacht op klant — blauw (= badge-info) */
.nav-badge.nav-tkt-offerte     { background: #0891b2; color: #fff; }  /* Offerte verstuurd — teal */
.nav-badge.nav-tkt-reply       { background: #16a34a; color: #fff; }  /* Nieuwe klant-reactie — groen */

/* Notification dot in sidebar */
.nav-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--danger, #ef4444);
    flex-shrink: 0;
    box-shadow: 0 0 0 2px rgba(239, 68, 68, 0.25);
    animation: navDotPulse 1.8s ease-in-out infinite;
}
@keyframes navDotPulse {
    0%, 100% { box-shadow: 0 0 0 2px rgba(239, 68, 68, 0.25); }
    50%      { box-shadow: 0 0 0 6px rgba(239, 68, 68, 0.05); }
}

.sidebar-footer {
    padding: 12px 20px;
    border-top: 1px solid rgba(255,255,255,0.06);
    flex-shrink: 0;
}

.sidebar-footer a {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--gray-400);
    font-size: 0.85rem;
    padding: 8px 0;
    transition: color var(--transition-fast);
}

.sidebar-footer a:hover {
    color: var(--danger-light);
}

/* --- Main Content Area --- */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: margin-left var(--transition-base);
}

/* Topbar */
.topbar {
    height: var(--topbar-height);
    background: rgba(255,255,255,0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 28px;
    position: sticky;
    top: 0;
    z-index: 900;
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.topbar-left h1 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--gray-800);
    letter-spacing: -0.01em;
}

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

.hamburger-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.3rem;
    color: var(--gray-600);
    cursor: pointer;
    padding: 8px;
    border-radius: var(--border-radius);
    transition: background var(--transition-fast);
}

.hamburger-btn:hover {
    background: var(--gray-100);
}

/* Page Content */
.page-content {
    flex: 1;
    padding: 28px;
}

/* --- Cards --- */
.card {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-100);
    overflow: hidden;
    transition: box-shadow var(--transition-base), transform var(--transition-base);
}

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

.card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--gray-100);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.card-header h2,
.card-header h3 {
    font-size: 1rem;
    font-weight: 600;
    margin: 0;
}

.card-body {
    padding: 20px;
}

.card-footer {
    padding: 12px 20px;
    border-top: 1px solid var(--gray-100);
    background: var(--gray-50);
}

/* Stat Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 18px;
    margin-bottom: 28px;
}

.stat-card {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    padding: 22px;
    border: 1px solid var(--gray-100);
    display: flex;
    align-items: flex-start;
    gap: 16px;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-xs);
}

.stat-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.stat-icon.primary { background: var(--primary-50); color: var(--primary); }
.stat-icon.success { background: var(--success-light); color: var(--success-dark); }
.stat-icon.warning { background: var(--warning-light); color: var(--warning-dark); }
.stat-icon.danger { background: var(--danger-light); color: var(--danger-dark); }
.stat-icon.info { background: var(--info-light); color: var(--info-dark); }
.stat-icon.accent { background: #cffafe; color: var(--accent-dark); }

.stat-info h4 {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 4px;
}

.stat-info .stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
    line-height: 1.2;
}

.stat-info .stat-desc {
    font-size: 0.75rem;
    color: var(--gray-400);
    margin-top: 2px;
}

/* --- Tables --- */
.table-container {
    overflow-x: auto;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--gray-200);
    background: #fff;
}

table.modern-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

table.modern-table thead {
    background: var(--gray-50);
}

table.modern-table thead th {
    padding: 12px 16px;
    text-align: left;
    font-weight: 600;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--gray-400);
    border-bottom: 1px solid var(--gray-200);
    white-space: nowrap;
}

table.modern-table tbody tr {
    border-bottom: 1px solid var(--gray-100);
    transition: background var(--transition-fast);
}

table.modern-table tbody tr:hover {
    background: var(--gray-50);
}

table.modern-table tbody tr:last-child {
    border-bottom: none;
}

table.modern-table tbody td {
    padding: 12px 16px;
    color: var(--gray-700);
    vertical-align: middle;
}

table.modern-table td a {
    font-weight: 500;
}

/* --- Badges / Status --- */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    border-radius: 999px;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    white-space: nowrap;
    line-height: 1.4;
}

.badge-success { background: var(--success-light); color: var(--success-dark); }
.badge-danger { background: var(--danger-light); color: var(--danger-dark); }
.badge-warning { background: var(--warning-light); color: var(--warning-dark); }
.badge-info { background: var(--info-light); color: var(--info-dark); }
.badge-primary { background: var(--primary-50); color: var(--primary-dark); }
.badge-accent { background: #cffafe; color: var(--accent-dark); }
.badge-slate { background: #e2e8f0; color: #475569; }
.badge-gray { background: var(--gray-100); color: var(--gray-600); }

.badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
    margin-right: 6px;
    flex: 0 0 auto;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 9px 18px;
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    font-weight: 500;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
    line-height: 1.4;
    font-family: inherit;
    letter-spacing: 0.01em;
}

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

.btn-primary {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    box-shadow: 0 1px 3px rgba(24,111,187,0.2);
}
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); color: #fff; box-shadow: 0 4px 12px rgba(24,111,187,0.3); transform: translateY(-1px); }

.btn-success {
    background: var(--success);
    color: #fff;
    border-color: var(--success);
    box-shadow: 0 1px 3px rgba(34,197,94,0.2);
}
.btn-success:hover { background: var(--success-dark); border-color: var(--success-dark); color: #fff; box-shadow: 0 4px 12px rgba(34,197,94,0.3); transform: translateY(-1px); }

.btn-danger {
    background: var(--danger);
    color: #fff;
    border-color: var(--danger);
    box-shadow: 0 1px 3px rgba(239,68,68,0.2);
}
.btn-danger:hover { background: var(--danger-dark); border-color: var(--danger-dark); color: #fff; box-shadow: 0 4px 12px rgba(239,68,68,0.3); transform: translateY(-1px); }

.btn-warning {
    background: var(--warning);
    color: #fff;
    border-color: var(--warning);
}
.btn-warning:hover { background: var(--warning-dark); border-color: var(--warning-dark); color: #fff; transform: translateY(-1px); }

.btn-info {
    background: var(--info);
    color: #fff;
    border-color: var(--info);
}
.btn-info:hover { background: var(--info-dark); border-color: var(--info-dark); color: #fff; transform: translateY(-1px); }

.btn-outline {
    background: transparent;
    color: var(--gray-600);
    border-color: var(--gray-200);
}
.btn-outline:hover { background: var(--gray-50); border-color: var(--gray-300); color: var(--gray-800); }

.btn-outline-primary {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary);
}
.btn-outline-primary:hover { background: var(--primary-50); color: var(--primary-dark); border-color: var(--primary-dark); }

.btn-ghost {
    background: transparent;
    color: var(--gray-500);
    border-color: transparent;
}
.btn-ghost:hover { background: var(--gray-100); color: var(--gray-700); }

.btn-sm {
    padding: 5px 12px;
    font-size: 0.8rem;
}

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

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

.btn-icon.btn-sm {
    width: 30px;
    height: 30px;
}

/* Button Group */
.btn-group {
    display: inline-flex;
    gap: 8px;
    flex-wrap: wrap;
}

/* --- Forms --- */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 6px;
}

.form-group label .required {
    color: var(--danger);
}

.form-control {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--gray-200);
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    font-family: inherit;
    color: var(--gray-800);
    background: #fff;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    line-height: 1.5;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(24, 111, 187, 0.08);
}

.form-control::placeholder {
    color: var(--gray-400);
}

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b7280' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

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

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.form-check {
    display: flex;
    align-items: center;
    gap: 8px;
}

.form-check input[type="checkbox"],
.form-check input[type="radio"] {
    width: 16px;
    height: 16px;
    accent-color: var(--primary);
}

.form-inline {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

/* --- Alerts / Messages --- */
.alert {
    padding: 14px 18px;
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
    animation: slideDown 0.3s ease;
}

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

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

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

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

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* --- Pagination --- */
.pagination {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-top: 20px;
    justify-content: center;
}

.pagination a,
.pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 10px;
    border: 1px solid var(--gray-200);
    border-radius: var(--border-radius);
    font-size: 0.85rem;
    color: var(--gray-600);
    background: #fff;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.pagination a:hover {
    background: var(--primary-50);
    border-color: var(--primary);
    color: var(--primary);
}

.pagination .active {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
    font-weight: 600;
}

/* --- Modal --- */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15,23,42,0.4);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.2s ease;
}

.modal-overlay.active {
    display: flex;
}

.modal {
    background: var(--bg-card);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-xl);
    width: 90%;
    max-width: 560px;
    max-height: 85vh;
    overflow-y: auto;
    animation: scaleIn 0.25s cubic-bezier(.4,0,.2,1);
    border: 1px solid var(--gray-100);
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--gray-100);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header h3 {
    font-size: 1.1rem;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.2rem;
    color: var(--gray-400);
    cursor: pointer;
    padding: 4px;
    line-height: 1;
}

.modal-close:hover {
    color: var(--gray-700);
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--gray-100);
    display: flex;
    justify-content: flex-end;
    gap: 8px;
}

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

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

/* --- Utility Classes --- */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--gray-500); }
.text-small { font-size: 0.8rem; }
.text-success { color: var(--success) !important; }
.text-danger { color: var(--danger) !important; }
.text-warning { color: var(--warning) !important; }
.text-info { color: var(--info) !important; }
.text-primary { color: var(--primary) !important; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.p-0 { padding: 0; }
.p-2 { padding: 16px; }
.p-3 { padding: 24px; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }

.d-flex { display: flex; }
.d-grid { display: grid; }
.flex-wrap { flex-wrap: wrap; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }

.w-100 { width: 100%; }
.hidden { display: none !important; }

/* --- Grid Layouts --- */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

/* --- Search / Filter Bar --- */
.toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.search-box {
    position: relative;
    flex: 1;
    max-width: 360px;
}

.search-box input {
    width: 100%;
    padding: 9px 14px 9px 38px;
    border: 1px solid var(--gray-200);
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    font-family: inherit;
    background: var(--gray-50);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(24, 111, 187, 0.08);
    background: #fff;
}

.search-box i {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-400);
    font-size: 0.9rem;
}

/* --- Empty State --- */
.empty-state {
    text-align: center;
    padding: 48px 24px;
    color: var(--gray-500);
}

.empty-state h3 {
    font-size: 1.1rem;
    color: var(--gray-600);
    margin-bottom: 8px;
}

.empty-state p {
    font-size: 0.9rem;
    margin-bottom: 20px;
}

.empty-state .btn {
    font-size: 0.9rem;
    padding: 10px 20px;
}

/* --- Tabs --- */
.tabs {
    display: flex;
    gap: 0;
    border-bottom: 1px solid var(--gray-200);
    margin-bottom: 20px;
}

.tab-link {
    padding: 10px 20px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-400);
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: all var(--transition-fast);
    cursor: pointer;
    white-space: nowrap;
    text-decoration: none;
    background: none;
    border-top: none;
    border-left: none;
    border-right: none;
    font-family: inherit;
}

.tab-link:hover {
    color: var(--gray-600);
}

.tab-link.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
    font-weight: 600;
}

/* --- Priority badges --- */
.priority-low { background: var(--success-light); color: var(--success-dark); }
.priority-normal { background: var(--info-light); color: var(--info-dark); }
.priority-high { background: var(--warning-light); color: var(--warning-dark); }
.priority-urgent { background: var(--danger-light); color: var(--danger-dark); }

/* --- Birthday icon bounce --- */
@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-4px); }
}

.birthday-icon {
    animation: bounce 1s infinite alternate;
    display: inline-block;
}

/* --- File Upload Area --- */
.file-upload-area {
    border: 2px dashed var(--gray-200);
    border-radius: var(--border-radius-lg);
    padding: 32px;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    background: var(--gray-50);
}

.file-upload-area:hover {
    border-color: var(--primary);
    background: var(--primary-50);
}

/* --- Login Page --- */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--gray-900) 0%, #0a3a6b 100%);
    padding: 24px;
}

.login-card {
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--border-radius-xl);
    box-shadow: 0 24px 48px rgba(0,0,0,0.15);
    width: 100%;
    max-width: 420px;
    padding: 44px;
    border: 1px solid rgba(255,255,255,0.2);
}

.login-card .login-logo {
    text-align: center;
    margin-bottom: 32px;
}

.login-card .login-logo img {
    height: 40px;
}

.login-card h2 {
    text-align: center;
    margin-bottom: 8px;
}

.login-card .login-subtitle {
    text-align: center;
    color: var(--gray-500);
    font-size: 0.9rem;
    margin-bottom: 28px;
}

/* --- Responsive --- */
@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
    }

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

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

    .hamburger-btn {
        display: block;
    }

    /* Overlay behind sidebar on mobile */
    .sidebar-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0,0,0,0.3);
        z-index: 999;
    }

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

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

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

    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    }
}

@media (max-width: 768px) {
    html {
        font-size: 14px;
    }

    .page-content {
        padding: 16px;
    }

    .topbar {
        padding: 0 16px;
    }

    .toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .search-box {
        max-width: none;
    }

    .btn-group {
        width: 100%;
    }

    .btn-group .btn {
        flex: 1;
        justify-content: center;
    }

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

@media (max-width: 480px) {
    .login-card {
        padding: 24px;
    }

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

/* --- Print Styles --- */
@media print {
    .sidebar,
    .topbar,
    .hamburger-btn,
    .sidebar-overlay,
    .btn,
    .toolbar {
        display: none !important;
    }

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

    .page-content {
        padding: 0;
    }
}

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

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

::-webkit-scrollbar-thumb {
    background: var(--gray-300);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gray-400);
}

/* --- Loading Spinner --- */
.spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--gray-200);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

/* --- Searchable Select Dropdown --- */
.ss-wrapper {
    position: relative;
    width: 100%;
}

.ss-wrapper select {
    display: none !important;
}

.ss-trigger {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--gray-200);
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    font-family: inherit;
    color: var(--gray-800);
    background: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    line-height: 1.5;
    min-height: 40px;
}

.ss-trigger:hover {
    border-color: var(--gray-300);
}

.ss-trigger.ss-open {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(24, 111, 187, 0.08);
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
}

.ss-trigger-text {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.ss-trigger-text.ss-placeholder {
    color: var(--gray-400);
}

.ss-trigger-arrow {
    margin-left: 8px;
    font-size: 0.7rem;
    color: var(--gray-500);
    transition: transform 0.2s ease;
}

.ss-trigger.ss-open .ss-trigger-arrow {
    transform: rotate(180deg);
}

.ss-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-card);
    border: 1px solid var(--primary);
    border-top: none;
    border-bottom-left-radius: var(--border-radius);
    border-bottom-right-radius: var(--border-radius);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    max-height: 300px;
    overflow: hidden;
    display: none;
    flex-direction: column;
}

.ss-dropdown.ss-open {
    display: flex;
}

.ss-search-wrap {
    padding: 8px;
    border-bottom: 1px solid var(--gray-200);
    position: sticky;
    top: 0;
    background: #fff;
}

.ss-search-wrap input {
    width: 100%;
    padding: 7px 12px;
    border: 1px solid var(--gray-200);
    border-radius: 6px;
    font-size: 0.85rem;
    font-family: inherit;
    outline: none;
    color: var(--gray-800);
    background: var(--gray-50);
    transition: border-color var(--transition-fast), background var(--transition-fast);
}

.ss-search-wrap input:focus {
    border-color: var(--primary);
    background: #fff;
}

.ss-search-wrap input::placeholder {
    color: var(--gray-400);
}

.ss-options {
    overflow-y: auto;
    max-height: 240px;
}

.ss-option {
    padding: 8px 14px;
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--gray-700);
    transition: background 0.1s ease;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.ss-option:hover,
.ss-option.ss-highlighted {
    background: var(--primary-50);
    color: var(--primary-dark);
}

.ss-option.ss-selected {
    background: var(--primary-100);
    color: var(--primary);
    font-weight: 500;
}

.ss-no-results {
    padding: 12px 14px;
    color: var(--gray-400);
    font-size: 0.85rem;
    text-align: center;
}

/* --- Tooltip --- */
[data-tooltip] {
    position: relative;
}

[data-tooltip]::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-4px);
    background: var(--gray-800);
    color: #fff;
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 0.75rem;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-fast);
    z-index: 100;
}

[data-tooltip]:hover::after {
    opacity: 1;
}