/* ============================================================
   Signage Admin — Modern Design System
   Style: Notion / Linear / Stripe inspired
   ============================================================ */

/* --- CSS Variables / Design Tokens --- */
:root {
    --sidebar-width: 256px;

    /* Colors */
    --color-bg: #f8f9fb;
    --color-surface: #ffffff;
    --color-surface-hover: #f4f5f7;
    --color-border: #e8eaed;
    --color-border-light: #f0f1f3;

    --color-text: #1a1d21;
    --color-text-secondary: #6b7280;
    --color-text-muted: #9ca3af;

    --color-primary: #2563eb;
    --color-primary-hover: #1d4ed8;
    --color-primary-light: #eff6ff;
    --color-primary-text: #ffffff;

    --color-success: #10b981;
    --color-success-light: #ecfdf5;
    --color-warning: #f59e0b;
    --color-warning-light: #fffbeb;
    --color-danger: #ef4444;
    --color-danger-light: #fef2f2;
    --color-info: #3b82f6;
    --color-info-light: #eff6ff;

    --color-sidebar-bg: #111318;
    --color-sidebar-hover: rgba(255, 255, 255, 0.06);
    --color-sidebar-active: rgba(255, 255, 255, 0.1);
    --color-sidebar-text: #9ca3af;
    --color-sidebar-text-active: #ffffff;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.8125rem;
    --font-size-base: 0.875rem;
    --font-size-lg: 1rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;

    /* Spacing */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;

    /* Shadows */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Google Fonts Import --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

/* --- Base / Reset --- */
*, *::before, *::after {
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* --- Sidebar --- */
#sidebar {
    width: var(--sidebar-width);
    min-height: 100vh;
    background: var(--color-sidebar-bg);
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1040;
    transition: transform var(--transition-base);
    border-right: 1px solid rgba(255, 255, 255, 0.06);
    display: flex;
    flex-direction: column;
}

#sidebar.collapsed {
    transform: translateX(-100%);
}

.sidebar-brand {
    padding: 1.25rem 1.25rem;
    color: #ffffff;
    font-size: var(--font-size-lg);
    font-weight: 700;
    letter-spacing: -0.01em;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    display: flex;
    align-items: center;
    gap: 0.625rem;
}

.sidebar-brand i {
    font-size: 1.25rem;
    opacity: 0.9;
}

#sidebar .nav {
    padding: 0.5rem 0.75rem;
    flex: 1;
}

#sidebar .nav-item {
    margin-bottom: 2px;
}

#sidebar .nav-link {
    color: var(--color-sidebar-text);
    padding: 0.5rem 0.75rem;
    font-size: var(--font-size-sm);
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 0.625rem;
}

#sidebar .nav-link i {
    width: 20px;
    text-align: center;
    font-size: 1rem;
    opacity: 0.7;
    margin-right: 0;
}

#sidebar .nav-link:hover {
    color: var(--color-sidebar-text-active);
    background: var(--color-sidebar-hover);
}

#sidebar .nav-link:hover i {
    opacity: 1;
}

#sidebar .nav-link.active {
    color: var(--color-sidebar-text-active);
    background: var(--color-sidebar-active);
}

#sidebar .nav-link.active i {
    opacity: 1;
}

/* --- Topbar --- */
#topbar {
    margin-left: var(--sidebar-width);
    transition: margin-left var(--transition-base);
    height: 56px;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    padding: 0 1.5rem;
    position: sticky;
    top: 0;
    z-index: 1030;
    backdrop-filter: blur(8px);
    background: rgba(255, 255, 255, 0.85);
}

#topbar.expanded {
    margin-left: 0;
}

#topbar .breadcrumb {
    margin-bottom: 0;
    font-size: var(--font-size-sm);
}

#topbar .breadcrumb-item a {
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

#topbar .breadcrumb-item a:hover {
    color: var(--color-primary);
}

#topbar .breadcrumb-item.active {
    color: var(--color-text);
    font-weight: 500;
}

/* --- Main Content --- */
#main-content {
    margin-left: var(--sidebar-width);
    transition: margin-left var(--transition-base);
    padding: 1.75rem 2rem;
    min-height: calc(100vh - 56px);
}

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

/* --- Page Headers --- */
h4, .h4 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.02em;
}

h5, .h5 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-text);
    letter-spacing: -0.01em;
}

/* --- Cards --- */
.card {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xs);
    background: var(--color-surface);
    transition: box-shadow var(--transition-base);
    overflow: hidden;
}

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

.card-header {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 1rem 1.25rem;
    font-weight: 600;
}

.card-body {
    padding: 1.25rem;
}

/* Dashboard stat cards */
.card.text-bg-primary,
.card.text-bg-success,
.card.text-bg-info,
.card.text-bg-warning {
    border: none;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.card.text-bg-primary {
    background: linear-gradient(135deg, #1d4ed8, #2563eb) !important;
}

.card.text-bg-success {
    background: linear-gradient(135deg, #059669, #10b981) !important;
}

.card.text-bg-info {
    background: linear-gradient(135deg, #0284c7, #0ea5e9) !important;
}

.card.text-bg-warning {
    background: linear-gradient(135deg, #d97706, #f59e0b) !important;
    color: #ffffff !important;
}

.card.text-bg-warning .card-title {
    color: rgba(255, 255, 255, 0.85) !important;
}

/* --- Tables --- */
.table {
    font-size: var(--font-size-sm);
    margin-bottom: 0;
}

.table > thead {
    border-bottom: 2px solid var(--color-border);
}

.table > thead th,
.table-light th {
    background: var(--color-bg) !important;
    color: var(--color-text-secondary);
    font-weight: 600;
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--color-border) !important;
    white-space: nowrap;
}

.table > tbody > tr {
    transition: background-color var(--transition-fast);
}

.table > tbody > tr > td {
    padding: 0.75rem 1rem;
    vertical-align: middle;
    border-bottom: 1px solid var(--color-border-light);
    color: var(--color-text);
}

.table-hover > tbody > tr:hover > td {
    background-color: var(--color-surface-hover);
}

/* --- Buttons --- */
.btn {
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border-radius: var(--radius-sm);
    padding: 0.4375rem 0.875rem;
    transition: all var(--transition-fast);
    border: 1px solid transparent;
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    line-height: 1.5;
}

.btn:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.btn-primary {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-primary-text);
    box-shadow: 0 1px 2px rgba(37, 99, 235, 0.2);
}

.btn-primary:hover {
    background-color: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
    box-shadow: 0 2px 4px rgba(37, 99, 235, 0.3);
    transform: translateY(-1px);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 1px 2px rgba(37, 99, 235, 0.2);
}

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

.btn-secondary:hover {
    background-color: var(--color-surface-hover);
    border-color: #d1d5db;
    color: var(--color-text);
}

.btn-outline-secondary {
    border-color: var(--color-border);
    color: var(--color-text-secondary);
    background: transparent;
}

.btn-outline-secondary:hover {
    background: var(--color-surface-hover);
    border-color: #d1d5db;
    color: var(--color-text);
}

.btn-outline-secondary.active {
    background: var(--color-primary-light);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.btn-outline-success {
    border-color: var(--color-success);
    color: var(--color-success);
}

.btn-outline-success:hover {
    background: var(--color-success-light);
    border-color: var(--color-success);
    color: var(--color-success);
}

.btn-outline-danger {
    border-color: var(--color-border);
    color: var(--color-danger);
    background: transparent;
}

.btn-outline-danger:hover {
    background: var(--color-danger-light);
    border-color: var(--color-danger);
    color: var(--color-danger);
}

.btn-danger {
    background-color: var(--color-danger);
    border-color: var(--color-danger);
}

.btn-danger:hover {
    background-color: #dc2626;
    border-color: #dc2626;
    box-shadow: 0 2px 4px rgba(239, 68, 68, 0.3);
}

.btn-sm {
    font-size: var(--font-size-xs);
    padding: 0.3125rem 0.625rem;
    border-radius: var(--radius-sm);
}

.btn-group .btn {
    border-radius: 0;
}

.btn-group .btn:first-child {
    border-top-left-radius: var(--radius-sm);
    border-bottom-left-radius: var(--radius-sm);
}

.btn-group .btn:last-child {
    border-top-right-radius: var(--radius-sm);
    border-bottom-right-radius: var(--radius-sm);
}

/* Icon-only action buttons in tables */
.btn i.bi:only-child {
    margin: 0;
}

/* --- Forms --- */
.form-control,
.form-select {
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 0.5rem 0.75rem;
    color: var(--color-text);
    background-color: var(--color-surface);
    transition: all var(--transition-fast);
    line-height: 1.5;
}

.form-control:hover,
.form-select:hover {
    border-color: #d1d5db;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    outline: none;
}

.form-control::placeholder {
    color: var(--color-text-muted);
}

.form-control-sm,
.form-select-sm {
    font-size: var(--font-size-xs);
    padding: 0.375rem 0.625rem;
}

.form-label {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: 0.375rem;
}

.form-text {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

/* File input */
.form-control[type="file"] {
    padding: 0.375rem 0.75rem;
}

.form-control[type="file"]::file-selector-button {
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: 500;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 0.25rem 0.75rem;
    margin-right: 0.75rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.form-control[type="file"]::file-selector-button:hover {
    background: var(--color-surface-hover);
}

/* --- Modals --- */
.modal-content {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg), 0 0 0 1px rgba(0, 0, 0, 0.03);
    overflow: hidden;
}

.modal-header {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 1.25rem 1.5rem;
}

.modal-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-text);
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    background: var(--color-bg);
    border-top: 1px solid var(--color-border);
    padding: 1rem 1.5rem;
    gap: 0.5rem;
}

.modal-backdrop.show {
    backdrop-filter: blur(4px);
}

.btn-close {
    opacity: 0.4;
    transition: opacity var(--transition-fast);
}

.btn-close:hover {
    opacity: 0.8;
}

/* --- Badges --- */
.badge {
    font-family: var(--font-family);
    font-size: var(--font-size-xs);
    font-weight: 500;
    padding: 0.25em 0.625em;
    border-radius: 100px;
    letter-spacing: 0.01em;
}

.badge.bg-success {
    background-color: var(--color-success-light) !important;
    color: #065f46;
}

.badge.bg-warning {
    background-color: var(--color-warning-light) !important;
    color: #92400e;
}

.badge.bg-danger {
    background-color: var(--color-danger-light) !important;
    color: #991b1b;
}

.badge.bg-secondary {
    background-color: var(--color-bg) !important;
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
}

.badge.bg-primary {
    background-color: var(--color-primary-light) !important;
    color: var(--color-primary);
}

.badge.bg-info {
    background-color: var(--color-info-light) !important;
    color: #1e40af;
}

/* --- Offcanvas / Drawer --- */
.offcanvas {
    border-left: 1px solid var(--color-border) !important;
    box-shadow: var(--shadow-lg);
}

.offcanvas-header {
    border-bottom: 1px solid var(--color-border);
    padding: 1.25rem 1.5rem;
}

.offcanvas-body {
    padding: 1.5rem;
}

/* --- Alerts --- */
.alert {
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    border: 1px solid;
}

.alert-light {
    background: var(--color-bg);
    border-color: var(--color-border);
    color: var(--color-text);
}

/* --- Progress --- */
.progress {
    border-radius: 100px;
    background: var(--color-bg);
    overflow: hidden;
}

.progress-bar {
    background: var(--color-primary);
}

/* --- Toasts --- */
.toast-container {
    z-index: 9999;
}

.toast {
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border);
    font-size: var(--font-size-sm);
}

/* --- Dropdown --- */
.dropdown-menu {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    padding: 0.375rem;
    font-size: var(--font-size-sm);
}

.dropdown-item {
    border-radius: var(--radius-sm);
    padding: 0.4375rem 0.75rem;
    transition: background-color var(--transition-fast);
}

.dropdown-item:hover {
    background-color: var(--color-surface-hover);
}

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

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

::-webkit-scrollbar-thumb {
    background: #d1d5db;
    border-radius: 100px;
}

::-webkit-scrollbar-thumb:hover {
    background: #9ca3af;
}

/* --- Sidebar Toggle Button --- */
#sidebarToggle {
    width: 36px;
    height: 36px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    color: var(--color-text-secondary);
    border-color: transparent;
    background: transparent;
}

#sidebarToggle:hover {
    background: var(--color-surface-hover);
    color: var(--color-text);
    border-color: transparent;
}

/* --- Tenant Selector in Topbar --- */
#globalTenantSelect {
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    background: var(--color-bg);
    border-color: var(--color-border);
}

/* --- Responsive --- */
@media (max-width: 991.98px) {
    #sidebar {
        transform: translateX(-100%);
    }

    #sidebar.show {
        transform: translateX(0);
    }

    #sidebar.collapsed {
        transform: translateX(-100%);
    }

    #topbar,
    #main-content {
        margin-left: 0 !important;
    }

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

@media (max-width: 767.98px) {
    #main-content {
        padding: 0.75rem;
    }

    .card-body {
        padding: 1rem;
    }

    .modal-body {
        padding: 1rem;
    }

    h4, .h4 {
        font-size: var(--font-size-lg);
    }
}

/* --- Utility: Subtle link --- */
a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

/* --- Spinner --- */
.spinner-border {
    color: var(--color-primary);
}

/* --- Selection --- */
::selection {
    background: rgba(37, 99, 235, 0.15);
    color: var(--color-text);
}

/* --- Empty state text --- */
.text-muted {
    color: var(--color-text-secondary) !important;
}