:root {
    --bg: #FFFFFF;
    --text: #1A1A1A;
    --text-muted: #CCCCCC;
    --accent: #FFC107;
    --border: #EEEEEE;
    --success: #22c55e; /* xanh lá nhẹ, dùng hạn chế */
    --error: #ef4444;   /* đỏ nhẹ, dùng hạn chế */
}

html, body {
    background: var(--bg);
    color: var(--text);
    font-family: Inter, Segoe UI, system-ui, -apple-system, Arial, sans-serif;
}

/* Sidebar */
.sidebar {
    background: var(--bg);
    border-right: 1px solid var(--border);
}
.nav-menu .nav-item {
    color: var(--text);
}
.nav-menu .nav-item.active,
.nav-menu .nav-item:hover {
    background: var(--accent);
    color: var(--text);
}
.nav-menu .nav-item .icon {
    color: var(--text);
    vertical-align: middle;
}
.icon {
    display: inline-block;
    color: var(--text);
}
.nav-menu .nav-item.active .icon,
.nav-menu .nav-item:hover .icon {
    color: var(--text);
}

/* Cards */
.glass-card,
.stat-card,
.table-container,
.content-header {

}

/* Headers & Text */
h1, h2, h3, h4, .stat-value {
  color: var(--text);
}
h1 {
  font-size: 1.75rem;
  font-weight: 600;
  margin: 0;
}
h2 {
  font-size: 1.25rem;
  font-weight: 600;
}
.stat-label, small, .loading {
  color: var(--text-muted);
}/* Tables */
.mappings-table th {
    color: var(--text);
    border-bottom: 1px solid var(--border);
}
.mappings-table td {
    color: var(--text);
    border-top: 1px solid var(--border);
}
.mappings-table a {
    color: var(--text);
    text-decoration: none;
}
.mappings-table a:hover {
    color: var(--accent);
    text-decoration: underline;
}

/* Badges */
.status-badge {
    border-radius: 999px;
    padding: 4px 10px;
    font-weight: 600;
}
.status-badge.status-active {
    background: var(--accent);
    color: var(--text);
}
.status-badge.status-inactive {
    background: var(--text-muted);
    color: var(--text);
}

/* Buttons */
.btn, .btn-primary, .btn-secondary, .btn-logout {
    border-radius: 8px;
    border: 1px solid var(--border);
}
.btn-primary {
    background: var(--accent);
    color: var(--text);
}
.btn-secondary {
    background: var(--bg);
    color: var(--text);
}
.btn:hover {
    filter: brightness(0.95);
}

/* Inputs */
input, select, textarea {
    color: var(--text);
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
}
input::placeholder, textarea::placeholder {
    color: var(--text-muted);
}

/* Accent separators */
.content-header h1::after {
    content: '';
    display: block;
    width: 48px;
    height: 3px;
    background: var(--accent);
    border-radius: 2px;
    margin-top: 8px;
}
:root {
    /* Brand Colors - Tap5Sao Style */
    --primary-yellow: #D4A017;
    /* Gold yellow from image */
    --primary-dark: #B8860B;
    /* Darker gold */
    --primary-light: #FFF9E6;
    /* Very light yellow background */
    --accent-black: #1A1A1A;
    /* Almost black for text */
    --text-primary: #2C2C2C;
    /* Dark gray for body text */
    --text-secondary: #666666;
    /* Medium gray */
    --text-muted: #999999;
    /* Light gray */
    --bg-primary: #FFFFFF;
    /* Pure white */
    --bg-secondary: #FAFAFA;
    /* Off white */
    --bg-accent: #FFF9E6;
    /* Light yellow tint */
    --border-light: #EEEEEE;
    /* Very light border */
    --border-color: #E0E0E0;
    /* Light gray border */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --success-color: #4CAF50;
    --warning-color: #FF9800;
    --danger-color: #F44336;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-primary);
    min-height: 100vh;
    color: var(--text-primary);
    line-height: 1.6;
    font-size: 15px;
}

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 3rem 2rem;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Card - Clean style */
.glass-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: 16px;
    padding: 3rem;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

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

/* Logo - Tap5Sao style */
.logo {
    text-align: center;
    margin-bottom: 2.5rem;
}

.logo h1 {
    font-size: 2.5rem;
    color: var(--accent-black);
    margin-bottom: 0.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.logo h1::before {
    content: "TAP";
}

.logo h1::after {
    content: "SAO";
    color: var(--primary-yellow);
}

.tagline {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Landing Page */
.landing-page {
    background: var(--bg-primary);
}

.landing-page .glass-card {
    max-width: 1100px;
    padding: 4rem;
}

.content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    text-align: center;
    color: var(--accent-black);
    font-weight: 700;
    line-height: 1.2;
}

.content>p {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    font-size: 1.05rem;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.feature {
    text-align: center;
    padding: 2.5rem 2rem;
    background: var(--bg-primary);
    border-radius: 12px;
    border: 1px solid var(--border-light);
    transition: all 0.3s ease;
}

.feature:hover {
    border-color: var(--primary-yellow);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.feature .icon {
    font-size: 3rem;
    display: block;
    margin-bottom: 1.25rem;
}

.feature h3 {
    font-size: 1.3rem;
    margin-bottom: 0.75rem;
    color: var(--accent-black);
    font-weight: 600;
}

.feature p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

.cta {
    text-align: center;
    margin-top: 2.5rem;
}

.help-text {
    margin-top: 1.25rem;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Buttons - Tap5Sao style */
.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    border: none;
    border-radius: 50px;
    /* Rounded pill shape like in image */
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    text-align: center;
    letter-spacing: 0.3px;
}

.btn-primary {
    background: var(--primary-yellow);
    color: var(--accent-black);
    border: 2px solid var(--primary-yellow);
    box-shadow: 0 4px 12px rgba(212, 160, 23, 0.3);
}

.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(212, 160, 23, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

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

.btn-block {
    display: block;
    width: 100%;
}

.btn-sm {
    padding: 0.65rem 1.5rem;
    font-size: 0.9rem;
}

.btn-danger {
    background: var(--danger-color);
    color: white;
    border: 2px solid var(--danger-color);
}

.btn-success {
    background: var(--success-color);
    color: white;
    border: 2px solid var(--success-color);
}

/* Error Page */
.error-page .container {
    padding: 2rem;
}

.error-card {
    max-width: 600px;
    text-align: center;
}

.error-icon {
    font-size: 5rem;
    margin-bottom: 1.5rem;
}

.error-card h1 {
    font-size: 2.25rem;
    margin-bottom: 1rem;
    color: var(--accent-black);
    font-weight: 700;
}

.error-message {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.error-details {
    background: var(--bg-accent);
    padding: 2rem;
    border-radius: 12px;
    margin-bottom: 2rem;
    text-align: left;
    border: 1px solid var(--border-light);
}

.error-details ul {
    list-style-position: inside;
    color: var(--text-muted);
}

/* Login Page */
.login-page {
    background: var(--bg-secondary);
}

.login-page .glass-card {
    max-width: 500px;
    width: 100%;
}

.login-card,
.register-card {
    animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

form h2 {
    text-align: center;
    margin-bottom: 2rem;
    font-size: 2rem;
    color: var(--accent-black);
    font-weight: 700;
}

.form-group {
    margin-bottom: 1.75rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.65rem;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.95rem;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 1rem 1.25rem;
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-yellow);
    box-shadow: 0 0 0 4px rgba(212, 160, 23, 0.1);
}

.form-group small {
    display: block;
    margin-top: 0.65rem;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-weight: 500;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin-right: 0.65rem;
    cursor: pointer;
}

.error-message {
    background: #FFF3F3;
    color: #C62828;
    padding: 1rem 1.25rem;
    border-radius: 12px;
    margin-bottom: 1.25rem;
    border: 1px solid #FFCDD2;
    font-size: 0.95rem;
}

.register-link,
.login-link {
    text-align: center;
    margin-top: 2rem;
    color: var(--text-muted);
}

.register-link a,
.login-link a {
    color: var(--primary-dark);
    text-decoration: none;
    font-weight: 600;
}

.register-link a:hover,
.login-link a:hover {
    text-decoration: underline;
}

/* Dashboard Container */
.dashboard-container {
    display: flex;
    min-height: 100vh;
    background: var(--bg-secondary);
}

/* Sidebar - Clean minimalist */
.sidebar {
    width: 280px;
    background: var(--bg-primary);
    border-right: 1px solid var(--border-light);
    padding: 2rem 1.25rem;
    display: flex;
    flex-direction: column;
}

.sidebar .logo {
    margin-bottom: 3rem;
}

.sidebar .logo h1 {
    font-size: 1.75rem;
    text-align: center;
    margin-bottom: 0;
}

.nav-menu {
    flex: 1;
}

.nav-item {
    display: flex;
    align-items: center;
    padding: 1rem 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 12px;
    transition: all 0.3s ease;
    font-weight: 500;
}

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

.nav-item.active {
    background: var(--primary-yellow);
    color: var(--accent-black);
    font-weight: 600;
}

.nav-item .icon {
    margin-right: 1rem;
    font-size: 1.35rem;
}

.user-info {
    padding: 1.25rem;
    background: var(--bg-accent);
    border-radius: 12px;
    margin-top: auto;
    border: 1px solid var(--border-light);
}

.user-avatar {
    width: 52px;
    height: 52px;
    background: var(--primary-yellow);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin: 0 auto 1rem;
}

.user-details {
    text-align: center;
    margin-bottom: 1rem;
}

.user-name {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.35rem;
    font-size: 1rem;
}

.user-email {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.btn-logout {
    width: 100%;
    padding: 0.65rem;
    background: transparent;
    color: var(--danger-color);
    border: 2px solid var(--danger-color);
    border-radius: 50px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    font-weight: 600;
}

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

/* Main Content */
.main-content {
    flex: 1;
    padding: 2.5rem;
    overflow-y: auto;
    background: var(--bg-secondary);
}

.content-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2.5rem;
}

.content-header h1 {
    font-size: 2.25rem;
    color: var(--accent-black);
    font-weight: 700;
    letter-spacing: -0.5px;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.75rem;
    margin-bottom: 2.5rem;
}

.stat-card {
    background: var(--bg-primary);
    padding: 2rem;
    border-radius: 16px;
    border: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    transition: all 0.3s ease;
}

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

.stat-icon {
    font-size: 2.75rem;
    margin-right: 1.25rem;
}

.stat-info {
    flex: 1;
}

.stat-label {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-value {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--accent-black);
    letter-spacing: -1px;
}

/* Filters */
.filters {
    display: flex;
    gap: 1.25rem;
    margin-bottom: 2rem;
}

.search-box {
    flex: 1;
}

.search-box input {
    width: 100%;
    padding: 1rem 1.25rem;
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-primary);
    font-size: 1rem;
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary-yellow);
    box-shadow: 0 0 0 4px rgba(212, 160, 23, 0.1);
}

.filter-select {
    padding: 1rem 1.5rem;
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-primary);
    cursor: pointer;
    font-weight: 500;
}

/* Table */
.table-container {
    background: var(--bg-primary);
    border-radius: 16px;
    border: 1px solid var(--border-light);
    overflow: hidden;
    margin-bottom: 2rem;
}

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

.mappings-table thead {
    background: var(--bg-accent);
    border-bottom: 2px solid var(--primary-yellow);
}

.mappings-table th {
    padding: 1.25rem 1.5rem;
    text-align: left;
    font-weight: 700;
    color: var(--accent-black);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.mappings-table td {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-light);
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.mappings-table tbody tr {
    transition: all 0.2s ease;
}

.mappings-table tbody tr:hover {
    background: var(--bg-accent);
}

.mappings-table .loading {
    text-align: center;
    padding: 3rem;
    color: var(--text-muted);
}

/* Status Badges */
.status-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
}

.status-active {
    background: #E8F8E8;
    color: #2E7D32;
}

.status-inactive {
    background: #F5F5F5;
    color: #757575;
}

/* Actions */
.actions {
    display: flex;
    gap: 0.65rem;
}

.btn-icon {
    padding: 0.65rem;
    background: transparent;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 1.1rem;
}

.btn-icon:hover {
    background: var(--bg-accent);
    border-color: var(--primary-yellow);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
    animation: fadeIn 0.3s ease;
}

.modal-content {
    max-width: 650px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
}

.modal .close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    font-size: 2rem;
    cursor: pointer;
    color: var(--text-muted);
    transition: all 0.2s ease;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.modal .close:hover {
    background: var(--bg-secondary);
    color: var(--accent-black);
}

.modal-actions {
    display: flex;
    gap: 1.25rem;
    margin-top: 2rem;
}

.modal-actions .btn {
    flex: 1;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    gap: 0.65rem;
    flex-wrap: wrap;
}

.pagination button {
    padding: 0.65rem 1.25rem;
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
}

.pagination button:hover:not(:disabled) {
    background: var(--bg-accent);
    border-color: var(--primary-yellow);
}

.pagination button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.pagination button.active {
    background: var(--primary-yellow);
    color: var(--accent-black);
    border-color: var(--primary-yellow);
}

/* Tab Content */
.tab-content {
    display: none;
    animation: fadeInTab 0.3s ease;
}

.tab-content.active {
    display: block;
}

@keyframes fadeInTab {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive */
@media (max-width: 968px) {
    .dashboard-container {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--border-light);
    }

    .filters {
        flex-direction: column;
    }

    .table-container {
        overflow-x: auto;
    }

    .content-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1.25rem;
    }

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