/* ==========================================
   BOOKING SUITE — VERCEL-INSPIRED DESIGN SYSTEM
   Matches admin.html / CRM design language
   ========================================== */

/* ===== Theme Variables ===== */
:root {
    --bg-primary: #ffffff;
    --bg-secondary: #fafafa;
    --text-primary: #000000;
    --text-secondary: #666666;
    --text-tertiary: #999999;
    --border-color: #eaeaea;
    --accent-color: #000000;
    --card-bg: #ffffff;
    --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
    --sidebar-bg: #ffffff;
    --header-bg: rgba(255, 255, 255, 0.8);
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --hover-lift: translateY(-2px);
    --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --success: #10b981;
    --success-bg: rgba(16, 185, 129, 0.1);
    --danger: #ef4444;
    --danger-bg: rgba(239, 68, 68, 0.1);
    --warning: #f59e0b;
    --warning-bg: rgba(245, 158, 11, 0.1);
    --info: #3b82f6;
    --info-bg: rgba(59, 130, 246, 0.1);
    --purple: #6366f1;
    --purple-bg: rgba(99, 102, 241, 0.1);
}

.dark {
    --bg-primary: #0a0a0a;
    --bg-secondary: #111111;
    --text-primary: #ededed;
    --text-secondary: #888888;
    --text-tertiary: #555555;
    --border-color: #1a1a1a;
    --accent-color: #ededed;
    --card-bg: #111111;
    --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
    --sidebar-bg: #0a0a0a;
    --header-bg: rgba(10, 10, 10, 0.85);
    --success-bg: rgba(16, 185, 129, 0.15);
    --danger-bg: rgba(239, 68, 68, 0.15);
    --warning-bg: rgba(245, 158, 11, 0.15);
    --info-bg: rgba(59, 130, 246, 0.15);
    --purple-bg: rgba(99, 102, 241, 0.15);
}

/* ===== Custom Scrollbar ===== */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-secondary); }

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

body {
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* ===== Layout Container ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

/* ===== App Shell (Sidebar + Main) ===== */
.app-shell {
    display: flex;
    height: 100vh;
    width: 100%;
    overflow: hidden;
}

/* ===== Sidebar ===== */
.sidebar {
    width: 260px;
    background: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    transition: var(--transition);
    flex-shrink: 0;
    z-index: 30;
}

.sidebar-brand {
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.25rem;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-brand-logo {
    display: flex;
    align-items: center;
    gap: 0.625rem;
}

.sidebar-brand-icon {
    width: 28px;
    height: 28px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--text-primary);
    color: var(--bg-primary);
    font-size: 0.75rem;
}

.sidebar-brand-text {
    font-weight: 700;
    font-size: 0.875rem;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.sidebar-brand-text span {
    opacity: 0.5;
}

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 1rem 0.75rem;
}

.sidebar-section-label {
    font-size: 0.625rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--text-secondary);
    padding: 0 0.875rem;
    margin-bottom: 0.5rem;
    margin-top: 1.5rem;
}

.sidebar-section-label:first-child {
    margin-top: 0;
}

.sidebar-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.625rem 0.875rem;
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
    font-family: var(--font-sans);
    margin-bottom: 2px;
}

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

.sidebar-item.active {
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-weight: 600;
}

.sidebar-item i {
    width: 18px;
    text-align: center;
    font-size: 0.8rem;
}

.sidebar-divider {
    border-top: 1px solid var(--border-color);
    margin: 1.5rem 0.5rem 0.75rem;
}

.sidebar-footer {
    padding: 0.75rem 1.25rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.sidebar-footer-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.75rem;
}

.sidebar-footer-label {
    font-size: 0.625rem;
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--text-secondary);
}

.sidebar-footer-value {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* Mobile close button */
.sidebar-close {
    display: none;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1rem;
}

/* ===== User Info (Sidebar) ===== */
.sidebar-user {
    padding: 1rem 0.875rem;
    margin-bottom: 0.5rem;
}

.sidebar-user-name {
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--text-primary);
}

.sidebar-user-link {
    font-size: 0.75rem;
    color: var(--info);
    cursor: pointer;
}

.sidebar-user-link:hover {
    text-decoration: underline;
}

/* ===== Header Bar ===== */
.header-bar {
    height: 56px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1rem;
    background: var(--header-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    z-index: 20;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.header-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.header-title i {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.header-divider {
    width: 1px;
    height: 20px;
    background: var(--border-color);
}

/* Mobile hamburger */
.header-hamburger {
    display: none;
    width: 32px;
    height: 32px;
    border-radius: 6px;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    background: none;
    cursor: pointer;
    font-size: 0.875rem;
}

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

.search-wrapper i {
    position: absolute;
    left: 0.625rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.7rem;
    color: var(--text-secondary);
    opacity: 0.5;
}

.search-bar {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.4rem 0.75rem 0.4rem 2rem;
    font-size: 0.8rem;
    color: var(--text-primary);
    outline: none;
    transition: var(--transition);
    width: 220px;
    font-family: var(--font-sans);
}

.search-bar:focus {
    border-color: var(--text-secondary);
    background: var(--bg-primary);
    width: 280px;
}

.search-bar::placeholder {
    color: var(--text-secondary);
    opacity: 0.5;
}

/* ===== Theme Toggle Pill ===== */
.theme-pill {
    display: flex;
    align-items: center;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 2px;
    gap: 2px;
}

.theme-pill button {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    cursor: pointer;
    transition: var(--transition);
}

.theme-pill button.active-theme {
    background: var(--text-primary);
    color: var(--bg-primary);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
}

/* ===== Profile Avatar ===== */
.profile-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 0.75rem;
    font-weight: 700;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    transition: var(--transition);
}

.profile-avatar:hover {
    border-color: var(--text-secondary);
}

/* ===== Notification Bell ===== */
.notif-btn {
    position: relative;
    width: 32px;
    height: 32px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    background: none;
    cursor: pointer;
    transition: var(--transition);
}

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

.notif-dot {
    width: 8px;
    height: 8px;
    background: var(--danger);
    border-radius: 50%;
    position: absolute;
    top: -1px;
    right: -1px;
    border: 2px solid var(--bg-primary);
}

/* ===== Main Content Area ===== */
.main-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    background: var(--bg-primary);
}

.main-content {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 1.5rem;
}

/* ===== Vercel Card ===== */
.vercel-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    transition: var(--transition);
    box-shadow: var(--card-shadow);
}

.vercel-card:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
    border-color: var(--text-tertiary);
}

.dark .vercel-card:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.vercel-card-hoverable:hover {
    transform: var(--hover-lift);
}

/* Legacy .card alias */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    transition: var(--transition);
    box-shadow: var(--card-shadow);
}

/* ===== Stat Card ===== */
.stat-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    transition: var(--transition);
    box-shadow: var(--card-shadow);
    position: relative;
    overflow: hidden;
}

.stat-card:hover {
    border-color: var(--text-tertiary);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.dark .stat-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.stat-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
}

.stat-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.stat-sub {
    font-size: 0.7rem;
    color: var(--text-tertiary);
    margin-top: 0.25rem;
}

/* ===== Welcome Banner ===== */
.welcome-banner {
    border-radius: var(--radius-md);
    padding: 1.75rem 2rem;
    margin-bottom: 1.5rem;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #111, #333);
    color: #fff;
    border: 1px solid var(--border-color);
}

.welcome-banner h1 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.welcome-banner p {
    font-size: 0.85rem;
    opacity: 0.7;
}

.welcome-banner-glow {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 33%;
    background: linear-gradient(to left, rgba(255, 255, 255, 0.04), transparent);
}

/* ===== Buttons ===== */
.btn-primary {
    background: var(--text-primary);
    color: var(--bg-primary);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 0.8rem;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-family: var(--font-sans);
}

.btn-primary:hover {
    opacity: 0.85;
    transform: scale(0.98);
}

.btn-secondary {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 0.8rem;
    transition: var(--transition);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-family: var(--font-sans);
}

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

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 0.8rem;
    transition: var(--transition);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-family: var(--font-sans);
}

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

.btn-danger {
    background: var(--danger);
    color: #fff;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 0.8rem;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-family: var(--font-sans);
}

.btn-danger:hover {
    opacity: 0.85;
}

.btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: 0.9rem;
}

.btn-full {
    width: 100%;
    justify-content: center;
}

/* ===== Form Inputs ===== */
.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.form-input {
    width: 100%;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    color: var(--text-primary);
    outline: none;
    transition: var(--transition);
    font-family: var(--font-sans);
}

.form-input:focus {
    border-color: var(--text-primary);
    box-shadow: 0 0 0 1px var(--text-primary);
}

.form-input::placeholder {
    color: var(--text-secondary);
    opacity: 0.6;
}

select.form-input {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%23666' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    padding-right: 2rem;
}

/* ===== Data Table ===== */
.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th {
    text-align: left;
    padding: 0.75rem 1rem;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
}

.data-table td {
    padding: 0.875rem 1rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
    font-size: 0.875rem;
}

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

.data-table tbody tr {
    transition: var(--transition);
}

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

/* ===== Status Badge ===== */
.status-badge {
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    padding: 3px 10px;
    border-radius: 9999px;
    letter-spacing: 0.05em;
    display: inline-block;
}

.status-upcoming {
    background: var(--info-bg);
    color: var(--info);
}

.status-completed {
    background: var(--success-bg);
    color: var(--success);
}

.status-cancelled {
    background: var(--danger-bg);
    color: var(--danger);
}

/* ===== Modal ===== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 95;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

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

.modal-panel {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.15);
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    animation: modalIn 0.25s ease-out;
}

.modal-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 0.95rem;
    font-weight: 700;
}

.modal-body {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem;
}

.modal-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
}

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

/* ===== Section Views ===== */
.view-section {
    display: none;
    animation: fadeIn 0.3s ease-out;
}

.view-section.active {
    display: block;
}

/* ===== Animations ===== */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-fade-in {
    animation: fadeIn 0.4s ease-out forwards;
}

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

/* ===== Toast ===== */
.toast-container {
    position: fixed;
    bottom: 1.25rem;
    right: 1.25rem;
    z-index: 100;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.toast {
    padding: 0.875rem 1.25rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 500;
    font-size: 0.85rem;
    color: var(--text-primary);
    animation: slideIn 0.3s ease-out;
}

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

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

/* ===== 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-md);
    overflow: hidden;
}

.calendar-header-cell {
    background: var(--bg-secondary);
    padding: 0.75rem 0.5rem;
    text-align: center;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-secondary);
}

.calendar-day {
    background: var(--card-bg);
    padding: 0.5rem;
    min-height: 80px;
    transition: var(--transition);
    cursor: default;
}

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

.calendar-day-number {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

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

.calendar-day.today .calendar-day-number {
    background: var(--text-primary);
    color: var(--bg-primary);
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.calendar-event {
    font-size: 0.65rem;
    padding: 2px 6px;
    border-radius: 4px;
    margin-top: 2px;
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    background: var(--info-bg);
    color: var(--info);
}

/* ===== Auth Page Styles ===== */
.auth-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 2rem;
    background: var(--bg-primary);
}

.auth-container {
    width: 100%;
    max-width: 420px;
}

.auth-card {
    padding: 2.5rem;
    text-align: center;
}

.auth-logo {
    width: 56px;
    height: 56px;
    background: var(--text-primary);
    color: var(--bg-primary);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin: 0 auto 2rem;
}

.auth-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.auth-desc {
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 400;
    margin-bottom: 2rem;
}

.auth-tabs {
    display: flex;
    background: var(--bg-secondary);
    padding: 3px;
    border-radius: 8px;
    margin-bottom: 2rem;
    border: 1px solid var(--border-color);
}

.auth-tab {
    flex: 1;
    padding: 0.6rem;
    font-weight: 600;
    font-size: 0.8rem;
    cursor: pointer;
    border-radius: 6px;
    transition: var(--transition);
    text-align: center;
    color: var(--text-secondary);
}

.auth-tab.active {
    background: var(--card-bg);
    color: var(--text-primary);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.auth-form {
    display: none;
    text-align: left;
    animation: fadeIn 0.3s ease-out;
}

.auth-form.active {
    display: block;
}

/* ===== Booking Page Styles ===== */
.booking-page {
    padding: 2.5rem 1rem;
    background: var(--bg-primary);
    min-height: 100vh;
}

.booking-container {
    max-width: 900px;
    margin: 0 auto;
}

.booking-layout {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 1.5rem;
}

.profile-sidebar {
    padding: 2rem;
    text-align: center;
    height: fit-content;
}

.profile-pic {
    width: 64px;
    height: 64px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin: 0 auto 1.25rem;
}

.date-picker {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.date-btn {
    padding: 0.75rem 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    background: var(--card-bg);
}

.date-btn:hover,
.date-btn.active {
    border-color: var(--text-primary);
    background: var(--bg-secondary);
}

.slot-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
}

.slot-btn {
    padding: 0.6rem;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: var(--radius-sm);
    text-align: center;
    font-weight: 600;
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition);
    background: transparent;
    font-family: var(--font-sans);
}

.slot-btn:hover,
.slot-btn.active {
    background: var(--text-primary);
    color: var(--bg-primary);
    border-color: var(--text-primary);
}

.confirmation-overlay {
    position: fixed;
    inset: 0;
    background: var(--bg-primary);
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 100;
    text-align: center;
    padding: 2rem;
}

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

/* ===== Track Page ===== */
.track-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 2rem;
    background: var(--bg-primary);
}

.track-container {
    width: 100%;
    max-width: 480px;
}

.detail-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.875rem;
    font-size: 0.875rem;
}

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

.detail-value {
    font-weight: 600;
    color: var(--text-primary);
}

.meeting-link-box {
    background: var(--info-bg);
    border: 1px solid rgba(59, 130, 246, 0.2);
    padding: 1.25rem;
    border-radius: var(--radius-md);
    margin-top: 1.5rem;
    text-align: center;
}

/* ===== Day Toggle Pills ===== */
.day-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.day-pill {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.875rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--card-bg);
}

.day-pill:hover {
    border-color: var(--text-secondary);
}

.day-pill input[type="checkbox"] {
    accent-color: var(--text-primary);
}

.day-pill:has(input:checked) {
    border-color: var(--text-primary);
    color: var(--text-primary);
    background: var(--bg-secondary);
}

/* ===== Settings Group ===== */
.settings-group {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.settings-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

.settings-row:last-child {
    border-bottom: none;
}

.settings-row:hover {
    background: var(--bg-secondary);
}

/* ===== Grid Helpers ===== */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

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

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

.grid-auto {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem;
}

/* ===== Sidebar Overlay (Mobile) ===== */
.sidebar-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 25;
    display: none;
}

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

/* ===== Mobile Responsive ===== */
@media (max-width: 1024px) {
    .sidebar {
        position: fixed;
        inset: 0;
        width: 280px;
        transform: translateX(-100%);
        z-index: 30;
        box-shadow: 4px 0 24px rgba(0, 0, 0, 0.1);
        transition: transform 0.3s ease;
    }

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

    .sidebar-close {
        display: block;
    }

    .header-hamburger {
        display: flex;
    }

    .sidebar-footer {
        display: none;
    }

    .search-bar {
        width: 140px;
    }

    .search-bar:focus {
        width: 180px;
    }

    .main-content {
        padding: 1rem;
    }
}

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

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

    .calendar-day {
        min-height: 60px;
        padding: 0.25rem;
    }

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

    .auth-card {
        padding: 1.5rem;
    }

    .search-wrapper {
        display: none;
    }
}

@media (max-width: 480px) {
    .grid-2,
    .grid-4 {
        grid-template-columns: 1fr;
    }

    .header-bar {
        padding: 0 0.75rem;
    }

    .header-title {
        font-size: 0.875rem;
    }
}

/* ===== Utility Classes ===== */
.text-center { text-align: center; }
.text-sm { font-size: 0.875rem; }
.text-xs { font-size: 0.75rem; }
.text-2xs { font-size: 0.65rem; }
.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.font-medium { font-weight: 500; }
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }
.mt-6 { margin-top: 1.5rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.hidden { display: none; }
.overflow-x-auto { overflow-x: auto; }
.w-full { width: 100%; }