/* =====================================================
   MaKrab — WFH Check-in System
   Design System — Purple Theme + White Background
   ===================================================== */

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

/* =====================================================
   CSS Variables
   ===================================================== */
:root {
    /* Purple palette */
    --primary-50: #faf5ff;
    --primary-100: #f3e8ff;
    --primary-200: #e9d5ff;
    --primary-300: #d8b4fe;
    --primary-400: #c084fc;
    --primary-500: #a855f7;
    --primary-600: #9333ea;
    --primary-700: #7e22ce;
    --primary-800: #6b21a8;
    --primary-900: #581c87;

    /* Grays */
    --gray-50:  #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;

    /* Semantic */
    --success: #10b981;
    --success-bg: #d1fae5;
    --warning: #f59e0b;
    --warning-bg: #fef3c7;
    --danger: #ef4444;
    --danger-bg: #fee2e2;
    --info: #3b82f6;
    --info-bg: #dbeafe;

    /* Layout */
    --sidebar-width: 260px;
    --header-height: 64px;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.05);
    --shadow-purple: 0 4px 14px rgba(147, 51, 234, 0.3);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: 'Prompt', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 15px;
    line-height: 1.6;
    color: var(--gray-800);
    background: var(--gray-50);
    min-height: 100vh;
}

a {
    color: var(--primary-600);
    text-decoration: none;
    transition: color var(--transition-fast);
}
a:hover {
    color: var(--primary-700);
}

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: 1.875rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.125rem; }

/* =====================================================
   Layout — App Shell
   ===================================================== */
.app-wrapper {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: linear-gradient(180deg, var(--primary-900) 0%, var(--primary-800) 100%);
    color: #fff;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
    overflow-y: auto;
    transition: transform var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.sidebar-brand {
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}
.sidebar-brand img {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
}
.sidebar-brand h2 {
    color: #fff;
    font-size: 1.25rem;
    font-weight: 700;
}
.sidebar-brand small {
    display: block;
    font-size: 0.7rem;
    opacity: 0.7;
    font-weight: 300;
}

.sidebar-nav {
    padding: 16px 12px;
    flex: 1;
}
.sidebar-nav .nav-section {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: rgba(255,255,255,0.4);
    padding: 16px 12px 6px;
    font-weight: 500;
}
.sidebar-nav .nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    border-radius: var(--radius-md);
    color: rgba(255,255,255,0.75);
    font-size: 0.9rem;
    transition: all var(--transition-fast);
    margin-bottom: 2px;
    cursor: pointer;
}
.sidebar-nav .nav-item:hover {
    background: rgba(255,255,255,0.1);
    color: #fff;
}
.sidebar-nav .nav-item.active {
    background: rgba(255,255,255,0.15);
    color: #fff;
    font-weight: 500;
}
.sidebar-nav .nav-item i {
    width: 20px;
    text-align: center;
    font-size: 1rem;
}
.sidebar-nav .nav-item .badge {
    margin-left: auto;
    background: var(--primary-400);
    color: #fff;
    font-size: 0.7rem;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    font-weight: 600;
}

.sidebar-footer {
    padding: 16px;
    border-top: 1px solid rgba(255,255,255,0.1);
}
.sidebar-user {
    display: flex;
    align-items: center;
    gap: 10px;
}
.sidebar-user .avatar {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: var(--primary-400);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.85rem;
}
.sidebar-user .user-info {
    flex: 1;
    overflow: hidden;
}
.sidebar-user .user-name {
    font-size: 0.85rem;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.sidebar-user .user-role {
    font-size: 0.7rem;
    opacity: 0.6;
}

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

/* Top Header */
.top-header {
    height: var(--header-height);
    background: #fff;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    position: sticky;
    top: 0;
    z-index: 50;
    box-shadow: var(--shadow-sm);
}

.top-header .page-title {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--gray-800);
}

.hamburger {
    display: none;
    background: none;
    border: none;
    font-size: 1.4rem;
    color: var(--gray-600);
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-md);
}
.hamburger:hover {
    background: var(--gray-100);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Page Content */
.page-content {
    padding: 24px;
    flex: 1;
}

/* =====================================================
   Cards
   ===================================================== */
.card {
    background: #fff;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-normal);
    overflow: hidden;
}
.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;
}
.card-header h3 {
    font-size: 1rem;
    font-weight: 600;
}
.card-body {
    padding: 20px;
}
.card-footer {
    padding: 12px 20px;
    border-top: 1px solid var(--gray-100);
    background: var(--gray-50);
}

/* Stat Cards */
.stat-card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 20px;
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    gap: 16px;
    transition: all var(--transition-normal);
}
.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}
.stat-card .stat-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    flex-shrink: 0;
}
.stat-card .stat-icon.purple {
    background: var(--primary-100);
    color: var(--primary-600);
}
.stat-card .stat-icon.green {
    background: var(--success-bg);
    color: var(--success);
}
.stat-card .stat-icon.yellow {
    background: var(--warning-bg);
    color: var(--warning);
}
.stat-card .stat-icon.red {
    background: var(--danger-bg);
    color: var(--danger);
}
.stat-card .stat-icon.blue {
    background: var(--info-bg);
    color: var(--info);
}
.stat-card .stat-info h4 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
    line-height: 1;
    margin-bottom: 4px;
}
.stat-card .stat-info p {
    font-size: 0.8rem;
    color: var(--gray-500);
    font-weight: 400;
}

/* =====================================================
   Grid System
   ===================================================== */
.grid {
    display: grid;
    gap: 20px;
}
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.flex-between {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}
.flex-gap {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* =====================================================
   Buttons
   ===================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    font-family: 'Prompt', sans-serif;
    font-size: 0.9rem;
    font-weight: 500;
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
    line-height: 1.4;
}
.btn:active {
    transform: scale(0.97);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
    color: #fff;
    box-shadow: var(--shadow-purple);
}
.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-700), var(--primary-800));
    color: #fff;
    box-shadow: 0 6px 20px rgba(147, 51, 234, 0.4);
    transform: translateY(-1px);
}

.btn-secondary {
    background: #fff;
    color: var(--gray-700);
    border: 1px solid var(--gray-300);
}
.btn-secondary:hover {
    background: var(--gray-50);
    border-color: var(--gray-400);
    color: var(--gray-700);
}

.btn-success {
    background: linear-gradient(135deg, #059669, #047857);
    color: #fff;
}
.btn-success:hover {
    background: linear-gradient(135deg, #047857, #065f46);
    color: #fff;
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger), #dc2626);
    color: #fff;
}
.btn-danger:hover {
    background: linear-gradient(135deg, #dc2626, #b91c1c);
    color: #fff;
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning), #d97706);
    color: #fff;
}

.btn-ghost {
    background: transparent;
    color: var(--gray-600);
    padding: 8px 12px;
}
.btn-ghost:hover {
    background: var(--gray-100);
}

.btn-sm {
    padding: 6px 14px;
    font-size: 0.8rem;
}
.btn-lg {
    padding: 14px 28px;
    font-size: 1rem;
}
.btn-block {
    width: 100%;
}
.btn:disabled, .btn.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

.btn-icon {
    width: 38px;
    height: 38px;
    padding: 0;
    border-radius: var(--radius-md);
}
.btn-icon.sm {
    width: 32px;
    height: 32px;
}

/* =====================================================
   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-300);
    border-radius: var(--radius-md);
    font-family: 'Prompt', sans-serif;
    font-size: 0.9rem;
    color: var(--gray-800);
    background: #fff;
    transition: all var(--transition-fast);
    outline: none;
}
.form-control:focus {
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(168, 85, 247, 0.15);
}
.form-control::placeholder {
    color: var(--gray-400);
}
.form-control.error {
    border-color: var(--danger);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

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-text {
    font-size: 0.75rem;
    color: var(--gray-500);
    margin-top: 4px;
}
.form-error {
    font-size: 0.75rem;
    color: var(--danger);
    margin-top: 4px;
}

.input-group {
    display: flex;
}
.input-group .form-control {
    border-radius: var(--radius-md) 0 0 var(--radius-md);
}
.input-group .btn {
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

/* Checkbox / Switch */
.form-check {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}
.form-check input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--primary-600);
}
.form-switch {
    position: relative;
    width: 44px;
    height: 24px;
    flex-shrink: 0;
}
.form-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}
.form-switch .slider {
    position: absolute;
    inset: 0;
    background: var(--gray-300);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: var(--transition-fast);
}
.form-switch .slider::before {
    content: '';
    position: absolute;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #fff;
    top: 3px;
    left: 3px;
    transition: var(--transition-fast);
    box-shadow: var(--shadow-sm);
}
.form-switch input:checked + .slider {
    background: var(--primary-600);
}
.form-switch input:checked + .slider::before {
    transform: translateX(20px);
}

/* =====================================================
   Tables
   ===================================================== */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-lg);
}
table {
    width: 100%;
    border-collapse: collapse;
}
table th, table td {
    padding: 12px 16px;
    font-size: 0.85rem;
    text-align: left;
    white-space: nowrap;
}
table thead th {
    background: var(--gray-50);
    font-weight: 600;
    color: var(--gray-600);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.5px;
    border-bottom: 2px solid var(--gray-200);
}
table tbody tr {
    border-bottom: 1px solid var(--gray-100);
    transition: background var(--transition-fast);
}
table tbody tr:hover {
    background: var(--primary-50);
}
table tbody td {
    color: var(--gray-700);
}

/* =====================================================
   Badges & Tags
   ===================================================== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 500;
}
.badge-purple { background: var(--primary-100); color: var(--primary-700); }
.badge-green { background: var(--success-bg); color: #065f46; }
.badge-yellow { background: var(--warning-bg); color: #92400e; }
.badge-red { background: var(--danger-bg); color: #991b1b; }
.badge-blue { background: var(--info-bg); color: #1e40af; }
.badge-gray { background: var(--gray-100); color: var(--gray-600); }

/* =====================================================
   Modal
   ===================================================== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    backdrop-filter: blur(4px);
    z-index: 200;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
    animation: fadeIn 0.2s ease;
}
.modal-overlay.active {
    display: flex;
}
.modal {
    background: #fff;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 520px;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideUp 0.3s ease;
}
.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: 1.3rem;
    color: var(--gray-400);
    cursor: pointer;
    padding: 4px;
    border-radius: var(--radius-sm);
}
.modal-close:hover {
    background: var(--gray-100);
    color: var(--gray-600);
}
.modal-body {
    padding: 24px;
}
.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--gray-100);
    display: flex;
    gap: 10px;
    justify-content: flex-end;
}
.modal-lg { max-width: 720px; }
.modal-xl { max-width: 960px; }

/* =====================================================
   Toast Notifications
   ===================================================== */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 999;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.toast {
    background: #fff;
    border-radius: var(--radius-md);
    padding: 14px 20px;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 300px;
    max-width: 420px;
    animation: slideRight 0.3s ease;
    border-left: 4px solid var(--primary-500);
}
.toast.success { border-left-color: var(--success); }
.toast.error { border-left-color: var(--danger); }
.toast.warning { border-left-color: var(--warning); }
.toast .toast-icon {
    font-size: 1.2rem;
    flex-shrink: 0;
}
.toast .toast-message {
    font-size: 0.85rem;
    flex: 1;
}
.toast .toast-close {
    background: none;
    border: none;
    color: var(--gray-400);
    cursor: pointer;
    font-size: 1rem;
}

/* =====================================================
   Check-in Components
   ===================================================== */
.clock-display {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--primary-700);
    text-align: center;
    letter-spacing: 2px;
    font-variant-numeric: tabular-nums;
}
.clock-date {
    text-align: center;
    color: var(--gray-500);
    font-size: 0.95rem;
    margin-top: 4px;
}
.countdown-bar {
    background: var(--gray-100);
    border-radius: var(--radius-full);
    height: 8px;
    overflow: hidden;
    margin: 12px 0;
}
.countdown-bar .fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-500), var(--primary-400));
    border-radius: var(--radius-full);
    transition: width 1s linear;
}

.checkin-btn {
    width: 160px;
    height: 160px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-500), var(--primary-700));
    color: #fff;
    border: none;
    font-family: 'Prompt', sans-serif;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    box-shadow: 0 8px 30px rgba(147, 51, 234, 0.4);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}
.checkin-btn::before {
    content: '';
    position: absolute;
    inset: -3px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-400), var(--primary-600));
    z-index: -1;
    animation: pulse-ring 2s ease-in-out infinite;
}
.checkin-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 12px 40px rgba(147, 51, 234, 0.5);
}
.checkin-btn:active {
    transform: scale(0.95);
}
.checkin-btn:disabled {
    background: var(--gray-300);
    box-shadow: none;
    cursor: not-allowed;
}
.checkin-btn:disabled::before {
    display: none;
}
.checkin-btn i {
    font-size: 2rem;
}

/* Location Type Cards */
.location-options {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}
.location-option {
    padding: 12px 20px;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    cursor: pointer;
    text-align: center;
    transition: all var(--transition-fast);
    min-width: 100px;
    background: #fff;
}
.location-option:hover {
    border-color: var(--primary-300);
    background: var(--primary-50);
}
.location-option.selected {
    border-color: var(--primary-500);
    background: var(--primary-50);
    box-shadow: 0 0 0 3px rgba(168, 85, 247, 0.15);
}
.location-option i { 
    font-size: 1.5rem; 
    display: block; 
    margin-bottom: 4px;
    color: var(--primary-600);
}
.location-option span {
    font-size: 0.8rem;
    color: var(--gray-600);
}

/* =====================================================
   Slot Cards (ช่วงเวลา)
   ===================================================== */
.slot-card {
    background: #fff;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    padding: 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: all var(--transition-fast);
}
.slot-card.open {
    border-color: var(--primary-300);
    background: var(--primary-50);
}
.slot-card.closed {
    opacity: 0.6;
}
.slot-card.checked {
    border-color: var(--success);
    background: var(--success-bg);
}
.slot-card .slot-info h4 {
    font-size: 0.95rem;
    font-weight: 600;
}
.slot-card .slot-info p {
    font-size: 0.8rem;
    color: var(--gray-500);
}

/* =====================================================
   Avatar
   ===================================================== */
.avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    object-fit: cover;
    background: var(--primary-100);
    color: var(--primary-700);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.9rem;
    flex-shrink: 0;
}
.avatar.sm { width: 32px; height: 32px; font-size: 0.75rem; }
.avatar.lg { width: 56px; height: 56px; font-size: 1.2rem; }
.avatar.xl { width: 80px; height: 80px; font-size: 1.6rem; }

/* =====================================================
   Empty State
   ===================================================== */
.empty-state {
    text-align: center;
    padding: 48px 20px;
    color: var(--gray-500);
}
.empty-state i {
    font-size: 3rem;
    color: var(--gray-300);
    margin-bottom: 16px;
}
.empty-state h3 {
    font-weight: 500;
    color: var(--gray-600);
    margin-bottom: 8px;
}
.empty-state p {
    font-size: 0.85rem;
    max-width: 300px;
    margin: 0 auto 20px;
}

/* =====================================================
   Loading
   ===================================================== */
.spinner {
    width: 36px;
    height: 36px;
    border: 3px solid var(--gray-200);
    border-top-color: var(--primary-600);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}
.loading-overlay {
    position: absolute;
    inset: 0;
    background: rgba(255,255,255,0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    border-radius: inherit;
}

/* =====================================================
   QR Code
   ===================================================== */
.qr-container {
    text-align: center;
    padding: 20px;
}
.qr-container canvas, .qr-container img {
    margin: 0 auto;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
}
.join-code {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: 8px;
    color: var(--primary-700);
    text-align: center;
    padding: 16px;
    background: var(--primary-50);
    border-radius: var(--radius-md);
    border: 2px dashed var(--primary-300);
}

/* =====================================================
   Pagination
   ===================================================== */
.pagination {
    display: flex;
    gap: 4px;
    justify-content: center;
    padding: 16px 0;
}
.pagination .page-btn {
    width: 36px;
    height: 36px;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-sm);
    background: #fff;
    color: var(--gray-600);
    font-size: 0.85rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}
.pagination .page-btn:hover {
    background: var(--primary-50);
    border-color: var(--primary-300);
}
.pagination .page-btn.active {
    background: var(--primary-600);
    color: #fff;
    border-color: var(--primary-600);
}

/* =====================================================
   Tabs
   ===================================================== */
.tabs {
    display: flex;
    gap: 0;
    border-bottom: 2px solid var(--gray-200);
    margin-bottom: 20px;
}
.tab-btn {
    padding: 10px 20px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--gray-500);
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: 'Prompt', sans-serif;
}
.tab-btn:hover { color: var(--primary-600); }
.tab-btn.active {
    color: var(--primary-700);
    border-bottom-color: var(--primary-600);
}

/* =====================================================
   Login Page
   ===================================================== */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-50) 0%, #fff 50%, var(--primary-50) 100%);
    padding: 20px;
    position: relative;
    overflow: hidden;
}
.login-page::before {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(147, 51, 234, 0.08) 0%, transparent 70%);
    top: -200px;
    right: -100px;
}
.login-page::after {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(168, 85, 247, 0.06) 0%, transparent 70%);
    bottom: -150px;
    left: -80px;
}

.login-card {
    background: #fff;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 420px;
    padding: 40px;
    position: relative;
    z-index: 1;
    border: 1px solid var(--gray-100);
}
.login-card .logo {
    text-align: center;
    margin-bottom: 28px;
}
.login-card .logo-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 12px;
    color: #fff;
    font-size: 1.8rem;
    box-shadow: var(--shadow-purple);
}
.login-card .logo h1 {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--primary-700);
}
.login-card .logo p {
    font-size: 0.8rem;
    color: var(--gray-500);
}

.divider {
    display: flex;
    align-items: center;
    gap: 16px;
    margin: 20px 0;
    color: var(--gray-400);
    font-size: 0.8rem;
}
.divider::before, .divider::after {
    content: '';
    flex: 1;
    border-top: 1px solid var(--gray-200);
}

.google-btn {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    background: #fff;
    font-family: 'Prompt', sans-serif;
    font-size: 0.9rem;
    color: var(--gray-700);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: all var(--transition-fast);
}
.google-btn:hover {
    background: var(--gray-50);
    box-shadow: var(--shadow-md);
}
.google-btn img {
    width: 20px;
    height: 20px;
}

/* =====================================================
   Animations
   ===================================================== */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
@keyframes slideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes slideRight {
    from { opacity: 0; transform: translateX(100px); }
    to { opacity: 1; transform: translateX(0); }
}
@keyframes spin {
    to { transform: rotate(360deg); }
}
@keyframes pulse-ring {
    0%, 100% { opacity: 0.5; transform: scale(1); }
    50% { opacity: 0; transform: scale(1.15); }
}

.fade-in {
    animation: fadeIn 0.4s ease;
}
.slide-up {
    animation: slideUp 0.4s ease;
}

/* =====================================================
   Sidebar Overlay (Mobile)
   ===================================================== */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 99;
}
.sidebar-overlay.active {
    display: block;
}

/* =====================================================
   Responsive
   ===================================================== */
@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.open {
        transform: translateX(0);
    }
    .main-content {
        margin-left: 0;
    }
    .hamburger {
        display: block;
    }
    .page-content {
        padding: 16px;
    }
    .grid-2, .grid-3, .grid-4 {
        grid-template-columns: 1fr;
    }
    .modal {
        margin: 10px;
        max-height: 95vh;
    }
    .top-header {
        padding: 0 16px;
    }
    .clock-display {
        font-size: 2.5rem;
    }
    .checkin-btn {
        width: 140px;
        height: 140px;
    }
    table th, table td {
        padding: 10px 12px;
        font-size: 0.8rem;
    }
    .toast {
        min-width: unset;
        max-width: calc(100vw - 40px);
    }
    .stat-card {
        padding: 16px;
    }
    .stat-card .stat-info h4 {
        font-size: 1.2rem;
    }
    .login-card {
        padding: 28px 24px;
    }
    .tabs {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    .tab-btn {
        flex-shrink: 0;
        padding: 10px 14px;
        font-size: 0.85rem;
    }
}

@media (max-width: 480px) {
    h1 { font-size: 1.4rem; }
    h2 { font-size: 1.2rem; }
    .clock-display { font-size: 2rem; }
    .checkin-btn {
        width: 120px;
        height: 120px;
        font-size: 0.95rem;
    }
    .checkin-btn i { font-size: 1.6rem; }
    .action-buttons {
        flex-direction: column !important;
    }
    .action-buttons .btn {
        width: 100% !important;
    }
    .gps-container {
        flex-direction: column !important;
        align-items: stretch !important;
        text-align: center !important;
    }
    .gps-container button {
        width: 100%;
        margin-top: 8px;
    }
}

/* =====================================================
   Print Styles
   ===================================================== */
@media print {
    .sidebar, .top-header, .hamburger, .btn, .toast-container { display: none !important; }
    .main-content { margin-left: 0 !important; }
    .page-content { padding: 0 !important; }
    body { background: #fff; font-size: 12pt; }
    .card { box-shadow: none; border: 1px solid #ddd; }
}

/* =====================================================
   Utility Classes
   ===================================================== */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-primary { color: var(--primary-600); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }
.text-muted { color: var(--gray-500); }
.text-sm { font-size: 0.8rem; }
.text-lg { font-size: 1.1rem; }
.text-xl { font-size: 1.3rem; }
.fw-bold { font-weight: 700; }
.fw-medium { font-weight: 500; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.p-1 { padding: 8px; }
.p-2 { padding: 16px; }
.p-3 { padding: 24px; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }
.hidden { display: none !important; }
.w-full { width: 100%; }
.relative { position: relative; }
.overflow-hidden { overflow: hidden; }