/* ==========================================================================
   LOTESA Admin Dashboard - Style Sheet
   ========================================================================== */

   :root {
    /* Dong bo 100% voi Design System website id (ETHEREAL TECH STYLE) */
    --bg-base: #f2f5f4;                /* Soft light warm-teal background */
    --bg-sidebar: #eceeee;             /* Muted light gray-teal sidebar */
    --bg-surface: #ffffff;             /* Pure white for cards and surfaces */
    --bg-surface-hover: #e6e9e8;       /* Subtle hover background */

    --color-primary: #006162;          /* Deep professional teal */
    --color-primary-dark: #004d4e;
    --color-primary-light: rgba(0, 97, 98, 0.08);
    --color-secondary: #336668;        /* Secondary dark teal */
    --color-accent: #006162;
    --color-purple: #336668;
    --color-success: #2e7d32;
    --color-danger: #c62828;
    --color-warning: #f57f17;
    --color-gray: #7f8c8d;
    --border-color: #bec9c8;

    --text-primary: #181c1c;           /* Dark slate-charcoal text */
    --text-secondary: #3f4948;         /* Medium slate text */
    --text-muted: #6f7979;             /* Muted outline text */

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --border-radius-sm: 6px;
    --border-radius-md: 10px;
    --border-radius-lg: 16px;

    --shadow-soft: 0 4px 12px rgba(24, 28, 28, 0.04);
    --shadow-hover: 0 6px 18px rgba(0, 97, 98, 0.06);
    --transition-smooth: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --sidebar-width: 260px;

    /* Alias dong bo voi website id (HTML/JS admin dang goi cac ten nay) */
    --primary-color: var(--color-primary);
    --text-color: var(--text-primary);
    --card-bg: var(--bg-surface);
    --body-bg: var(--bg-base);
    --bg-card: var(--bg-surface);
    --accent-cyan: var(--color-primary);
    --accent-cyan-rgb: 0, 97, 98;
    --accent-purple: var(--color-secondary);
    --accent-purple-rgb: 51, 102, 104;
    --accent-red: var(--color-danger);
    --card-padding: 1.5rem;
    --font-primary: var(--font-family);
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-base);
    color: var(--text-primary);
    line-height: 1.5;
    overflow: hidden;
    height: 100vh;
    display: flex;
    -webkit-font-smoothing: antialiased;
}

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

/* Scrollbar Customization (dong bo id) */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #bec9c8; border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: #6f7979; }

/* App Container */
.app-container {
    display: flex;
    width: 100%;
    height: 100%;
}

/* Sidebar Navigation */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    padding: 2rem 1.25rem 1.25rem;
    height: 100%;
    z-index: 10;
}

.sidebar-brand {
    margin-bottom: 2.5rem;
    padding-left: 0.5rem;
}

.brand-logo {
    font-size: 1.6rem;
    font-weight: 800;
    letter-spacing: -1px;
    color: var(--color-primary);
}

.logo-text {
    font-size: 1.6rem;
    font-weight: 800;
    letter-spacing: -1px;
    color: var(--color-primary);
}

.logo-text span.text-accent,
.text-accent {
    color: var(--color-primary);
    font-weight: 800;
}

.brand-subtitle {
    display: block;
    font-size: 0.72rem;
    color: var(--text-muted);
    font-weight: 600;
    letter-spacing: 1.2px;
    text-transform: uppercase;
    margin-top: 0.25rem;
}

.sidebar-menu {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    flex-grow: 1;
}

.menu-item {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    padding: 0.75rem 1.15rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: var(--border-radius-md);
    transition: var(--transition-smooth);
}

.menu-item i {
    font-size: 1rem;
    width: 20px;
    display: flex;
    justify-content: center;
    color: var(--text-muted);
    transition: var(--transition-smooth);
}

.menu-item:hover {
    background-color: var(--bg-surface-hover);
    color: var(--color-primary);
    transform: translateX(3px);
}

.menu-item:hover i {
    color: var(--color-primary);
}

.menu-item.active {
    background-color: rgba(0, 97, 98, 0.08);
    color: var(--color-primary);
    border-left: 3px solid var(--color-primary);
    padding-left: calc(1.15rem - 3px);
    font-weight: 600;
}

.menu-item.active i {
    color: var(--color-primary);
}

/* Sidebar Footer (dong bo voi website khach) */
.sidebar-footer {
    margin-top: auto;
    border-top: 1px solid var(--border-color);
    padding-top: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.admin-badge {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background-color: var(--color-primary-light);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    padding: 0.7rem 0.85rem;
}

.admin-badge-avatar {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
    border-radius: 50%;
    background-color: var(--color-primary);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
}

.admin-badge-info {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.admin-badge-name {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.admin-badge-role {
    font-size: 0.72rem;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.menu-item.exit-btn {
    border: 1px dashed var(--border-color);
}

.menu-item.exit-btn:hover {
    border-color: var(--color-primary);
    background-color: transparent;
}

/* Main Content Area */
.main-content {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    height: 100%;
    background-color: var(--bg-base);
}

.content-header {
    height: 72px;
    padding: 0 2.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
    background-color: var(--bg-surface);
}

.header-title {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.3px;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
    background-color: var(--bg-base);
    padding: 0.45rem 0.9rem;
    border-radius: 100px;
    border: 1px solid var(--border-color);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--color-success);
}

.scroll-content {
    flex-grow: 1;
    padding: 2.5rem;
    overflow-y: auto;
}

.tab-panel {
    display: none;
    animation: fadeIn 0.35s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

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

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Card layout grid */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 1.25rem;
    align-items: start;
}

.info-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-soft);
    transition: var(--transition-smooth);
}

.info-card:hover {
    border-color: var(--color-primary);
}

.card-header {
    padding: 1.1rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
    background-color: #f1f4f3;
}

.card-header h3 {
    font-size: 1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.65rem;
    color: var(--color-primary);
}

.card-body {
    padding: 1.25rem;
}

.section-title {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--color-accent);
    margin: 1.5rem 0 0.75rem 0;
    padding-bottom: 0.25rem;
    border-bottom: 1px dashed var(--border-color);
}

.section-title:first-of-type {
    margin-top: 0;
}

/* Forms */
.form-row-group {
    display: flex;
    gap: 1rem;
}

.flex-1 { flex: 1; }

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
    margin-bottom: 1.25rem;
}

.form-group label {
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input, .form-group select, .form-group textarea {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.65rem 0.85rem;
    border-radius: var(--border-radius-sm);
    font-size: 0.92rem;
    font-family: inherit;
    outline: none;
    transition: var(--transition-smooth);
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    border-color: var(--color-primary);
}

.promo-plan-selector {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.55rem;
}

.promo-plan-option {
    min-height: 38px;
    display: flex;
    align-items: center;
    gap: 0.55rem;
    padding: 0.55rem 0.7rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    background: var(--bg-surface);
    color: var(--text-secondary);
    font-size: 0.84rem;
    font-weight: 600;
    cursor: pointer;
    user-select: none;
}

.promo-plan-option:hover {
    border-color: var(--color-primary);
}

.promo-plan-option:has(input:checked) {
    border-color: var(--color-primary);
    background: rgba(0, 97, 98, 0.07);
    color: var(--color-primary);
}

.promo-plan-option-all {
    grid-column: 1 / -1;
}

.promo-plan-option input[type="checkbox"] {
    width: 17px;
    height: 17px;
    margin: 0;
    accent-color: var(--color-primary);
}

.promo-plan-help {
    color: var(--text-muted);
    font-size: 0.76rem;
    line-height: 1.45;
}

.form-group input:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    padding: 0.68rem 1.35rem;
    font-size: 0.88rem;
    font-weight: 600;
    border-radius: var(--border-radius-sm);
    border: none;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.btn-primary {
    background-color: var(--color-primary);
    color: #ffffff;
}

.btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-1.5px);
    box-shadow: 0 4px 12px rgba(0, 97, 98, 0.15);
}

.btn-secondary {
    background-color: var(--color-secondary);
    color: #ffffff;
}

.btn-secondary:hover {
    opacity: 0.9;
    transform: translateY(-1.5px);
    box-shadow: 0 4px 12px rgba(51, 102, 104, 0.15);
}

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

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

.btn-danger {
    background-color: transparent;
    border: 1px solid rgba(198, 40, 40, 0.4);
    color: var(--color-danger);
}

.btn-danger:hover {
    background-color: rgba(198, 40, 40, 0.05);
    border-color: var(--color-danger);
}

.btn-save {
    width: 100%;
    margin-top: 1rem;
}

.btn-sm {
    padding: 0.4rem 0.75rem;
    font-size: 0.78rem;
    font-weight: 600;
}

/* User management table header */
.user-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.header-search {
    position: relative;
    width: 300px;
}

.header-search input {
    width: 100%;
    background-color: var(--bg-base);
    border: 1px solid var(--border-color);
    border-radius: 100px;
    padding: 0.5rem 1rem 0.5rem 2.2rem;
    outline: none;
    font-size: 0.85rem;
    transition: var(--transition-smooth);
}

.header-search input:focus {
    border-color: var(--color-primary);
    background-color: var(--bg-surface);
}

.search-icon {
    position: absolute;
    left: 0.9rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* Tables */
.table-responsive {
    overflow-x: auto;
    width: 100%;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.88rem;
    background-color: var(--bg-surface, #ffffff);
}

.admin-table th, .admin-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color, #bec9c8);
}

.admin-table th {
    font-weight: 700;
    color: var(--color-primary);
    background-color: rgba(0, 97, 98, 0.06);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.5px;
}

.admin-table tbody tr:nth-child(even) {
    background-color: rgba(0, 97, 98, 0.025);
}

.admin-table tbody tr:hover {
    background-color: rgba(0, 97, 98, 0.035) !important;
}

.user-cell {
    display: flex;
    flex-direction: column;
}

.user-display-name {
    font-weight: 700;
    color: var(--text-primary);
}

.user-username {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-family: monospace;
}

.code-block {
    font-family: monospace;
    background-color: #f1f4f3;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    color: var(--color-primary);
    font-size: 0.78rem;
}

.text-muted-cell {
    color: var(--text-muted);
    font-size: 0.8rem;
}

.badge {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 700;
}

.badge-success { background-color: rgba(46, 125, 50, 0.1); color: var(--color-success); }
.badge-warning { background-color: rgba(245, 127, 23, 0.1); color: var(--color-warning); }
.badge-danger { background-color: rgba(198, 40, 40, 0.1); color: var(--color-danger); }
.badge-info { background-color: var(--color-primary-light); color: var(--color-primary); }

.action-buttons {
    display: flex;
    gap: 0.5rem;
}

.btn-reset {
    background-color: rgba(198, 40, 40, 0.06);
    color: var(--color-danger);
    border: 1px solid rgba(198, 40, 40, 0.15);
}

.btn-reset:hover {
    background-color: var(--color-danger);
    color: #ffffff;
}

.btn-edit {
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    border: 1px solid rgba(0, 97, 98, 0.15);
}

.btn-edit:hover {
    background-color: var(--color-primary);
    color: #ffffff;
}

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(30, 41, 40, 0.5);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-smooth);
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-container {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    width: 500px;
    max-width: 90%;
    box-shadow: 0 10px 40px rgba(30, 41, 40, 0.15);
    overflow: hidden;
    transform: translateY(20px);
    transition: var(--transition-smooth);
}

.modal-overlay.active .modal-container {
    transform: translateY(0);
}

.modal-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: #f1f4f3;
}

.modal-header h3 {
    font-size: 1.1rem;
    font-weight: 700;
}

.close-modal-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1.2rem;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.close-modal-btn:hover {
    color: var(--color-danger);
}

.modal-body {
    padding: 1.5rem;
    max-height: 70vh;
    overflow-y: auto;
}

.modal-footer {
    padding: 1.25rem 1.5rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    background-color: #f1f4f3;
}

/* Toast Container */
.toast-container {
    position: fixed;
    top: 2rem;
    right: 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    z-index: 2000;
}

.toast {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: 0.9rem 1.25rem;
    border-radius: var(--border-radius-sm);
    box-shadow: 0 4px 15px rgba(30, 41, 40, 0.08);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.88rem;
    font-weight: 600;
    min-width: 280px;
    animation: slideIn 0.3s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.toast.success {
    border-left: 4px solid var(--color-success);
    color: var(--color-success);
}

.toast.error {
    border-left: 4px solid var(--color-danger);
    color: var(--color-danger);
}

.toast.info {
    border-left: 4px solid var(--color-primary);
    color: var(--color-primary);
}

@keyframes slideIn {
    from { opacity: 0; transform: translateX(30px); }
    to { opacity: 1; transform: translateX(0); }
}

.toast.fade-out {
    animation: fadeOut 0.3s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes fadeOut {
    to { opacity: 0; transform: translateX(30px); }
}

/* Table Card Styling */
.table-card {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-soft);
    transition: var(--transition-smooth);
}
.table-card:hover {
    border-color: var(--color-primary);
}

/* ==========================================================================
   RESPONSIVE (dong bo id)
   ========================================================================== */
@media (max-width: 1024px) {
    .sidebar {
        width: 76px;
        padding: 1.5rem 0.75rem 1rem;
    }
    .sidebar-brand .brand-subtitle,
    .menu-item span,
    .admin-badge-info,
    .exit-btn span {
        display: none;
    }
    .brand-logo, .logo-text {
        font-size: 1.1rem;
    }
    .menu-item {
        justify-content: center;
        padding: 0.75rem;
    }
    .menu-item.active {
        border-left: none;
        padding-left: 0.75rem;
    }
    .admin-badge {
        justify-content: center;
        padding: 0.6rem;
    }
    .content-header {
        padding: 0 1.25rem;
    }
    .scroll-content {
        padding: 1.5rem;
    }
    .card-grid {
        grid-template-columns: 1fr;
    }
    .form-row-group {
        flex-direction: column;
        gap: 0;
    }
}

@media (max-width: 600px) {
    .header-title {
        font-size: 1.1rem;
    }
    .content-header {
        height: 60px;
    }
    .scroll-content {
        padding: 1rem;
    }
    .status-indicator span {
        display: none;
    }
    .modal-container {
        width: 95%;
    }
    .promo-plan-selector {
        grid-template-columns: 1fr;
    }
    .promo-plan-option-all {
        grid-column: auto;
    }
}