:root {
    --octal-purple: #a855f7;
    --octal-purple-dark: #7c3aed;
    --octal-purple-light: #c084fc;
    --octal-purple-glow: rgba(168, 85, 247, 0.35);
    --octal-purple-soft: rgba(168, 85, 247, 0.12);

    --bs-primary: var(--octal-purple);
    --bs-primary-rgb: 168, 85, 247;
}

[data-bs-theme='dark'] {
    --octal-header-bg: #000000;
    --octal-sidebar-bg: #000000;
    --octal-bg: #0a0a0a;
    --octal-surface: #111111;
    --octal-surface-raised: #1a1a1a;
    --octal-border: #2a2a2a;
    --octal-text: #f5f5f5;
    --octal-text-muted: #a3a3a3;
    --octal-sidebar-link: #d4d4d4;
    --octal-sidebar-link-hover-color: var(--octal-purple-light);
    --octal-sidebar-link-active: #ffffff;
    --octal-link: var(--octal-purple-light);
    --octal-link-hover: #d8b4fe;
    --octal-login-bg: radial-gradient(circle at top, rgba(168, 85, 247, 0.18), transparent 45%),
        linear-gradient(180deg, #000000 0%, #0a0a0a 100%);

    --bs-link-color: var(--octal-link);
    --bs-link-hover-color: var(--octal-link-hover);
    --bs-body-bg: var(--octal-bg);
    --bs-body-color: var(--octal-text);
    --bs-border-color: var(--octal-border);
    --bs-secondary-bg: var(--octal-surface);
    --bs-tertiary-bg: var(--octal-surface-raised);
    --bs-emphasis-color: #ffffff;
}

[data-bs-theme='light'] {
    --octal-header-bg: #ffffff;
    --octal-sidebar-bg: #ffffff;
    --octal-bg: #f4f4f5;
    --octal-surface: #ffffff;
    --octal-surface-raised: #fafafa;
    --octal-border: #e5e5e5;
    --octal-text: #171717;
    --octal-text-muted: #737373;
    --octal-sidebar-link: #525252;
    --octal-sidebar-link-hover-color: var(--octal-purple);
    --octal-sidebar-link-active: var(--octal-purple-dark);
    --octal-link: var(--octal-purple-dark);
    --octal-link-hover: var(--octal-purple);
    --octal-login-bg: radial-gradient(circle at top, rgba(168, 85, 247, 0.12), transparent 45%),
        linear-gradient(180deg, #ffffff 0%, #f4f4f5 100%);

    --bs-link-color: var(--octal-link);
    --bs-link-hover-color: var(--octal-link-hover);
    --bs-body-bg: var(--octal-bg);
    --bs-body-color: var(--octal-text);
    --bs-border-color: var(--octal-border);
    --bs-secondary-bg: var(--octal-surface);
    --bs-tertiary-bg: var(--octal-surface-raised);
    --bs-emphasis-color: #171717;
}

html,
body.octal-theme {
    background-color: var(--octal-bg) !important;
    color: var(--octal-text);
}

/* Header */
.octal-theme .app-header {
    background: var(--octal-header-bg) !important;
    border-bottom: 1px solid var(--octal-border) !important;
}

.octal-theme .app-header .nav-link {
    color: var(--octal-text);
}

.octal-theme .app-header .nav-link:hover {
    color: var(--octal-purple);
}

.octal-theme .theme-toggle-btn {
    border: 1px solid var(--octal-border);
    background: transparent;
    color: var(--octal-text);
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.octal-theme .theme-toggle-btn:hover {
    border-color: var(--octal-purple);
    color: var(--octal-purple);
    background: var(--octal-purple-soft);
}

/* Sidebar */
.octal-theme .app-sidebar {
    background: var(--octal-sidebar-bg) !important;
    border-right: 1px solid var(--octal-border);
}

.octal-theme .sidebar-brand {
    border-bottom: 1px solid var(--octal-border);
    padding: 0.85rem 1rem;
}

.octal-theme .sidebar-brand .brand-link {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.25rem 0;
}

.brand-logo-wrap {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    line-height: 0;
}

.octal-theme .sidebar-brand .brand-logo,
body.octal-login .brand-logo {
    max-height: 40px;
    max-width: min(100%, 200px);
    width: auto;
    height: auto;
}

body.octal-login .brand-logo {
    max-height: 48px;
}

.brand-logo-adaptive .brand-logo-dark,
.brand-logo-adaptive .brand-logo-light {
    max-height: inherit;
}

[data-bs-theme='dark'] .brand-logo-adaptive .brand-logo-light {
    display: none;
}

[data-bs-theme='light'] .brand-logo-adaptive .brand-logo-dark {
    display: none;
}

.octal-theme .sidebar-menu > .nav-item > .nav-link {
    color: var(--octal-sidebar-link);
}

.octal-theme .sidebar-menu > .nav-item > .nav-link:hover {
    background: var(--octal-purple-soft);
    color: var(--octal-sidebar-link-hover-color);
}

.octal-theme .sidebar-menu > .nav-item > .nav-link.active,
.octal-theme .sidebar-menu > .nav-item.menu-open > .nav-link {
    background: linear-gradient(90deg, rgba(168, 85, 247, 0.28), rgba(168, 85, 247, 0.08));
    color: var(--octal-sidebar-link-active);
    box-shadow: inset 3px 0 0 var(--octal-purple);
}

[data-bs-theme='light'] .octal-theme .sidebar-menu > .nav-item > .nav-link.active,
[data-bs-theme='light'] .octal-theme .sidebar-menu > .nav-item.menu-open > .nav-link {
    background: linear-gradient(90deg, rgba(168, 85, 247, 0.16), rgba(168, 85, 247, 0.05));
}

[data-bs-theme='light'] .octal-theme .sidebar-menu > .nav-item > .nav-link:hover {
    color: var(--octal-purple);
}

/* Main menu icons & expand arrows */
.octal-theme .sidebar-menu > .nav-item > .nav-link p {
    padding-right: 1.75rem;
}

.octal-theme .sidebar-menu > .nav-item > .nav-link .nav-icon {
    display: flex !important;
    align-items: center;
    justify-content: center;
    min-width: 1.5rem;
    font-size: 1.05rem;
    color: var(--octal-sidebar-link);
    flex-shrink: 0;
}

.octal-theme .sidebar-menu > .nav-item > .nav-link .nav-arrow {
    display: inline-block !important;
    visibility: visible !important;
    opacity: 1 !important;
    position: absolute;
    top: 50%;
    right: 1rem;
    font-size: 0.8rem;
    color: var(--octal-sidebar-link);
    transform: translateY(-50%);
    transition: transform 0.2s ease, color 0.2s ease;
}

.octal-theme .sidebar-menu > .nav-item.menu-open > .nav-link .nav-arrow {
    transform: translateY(-50%) rotate(90deg);
}

.octal-theme .sidebar-menu > .nav-item > .nav-link:hover .nav-icon,
.octal-theme .sidebar-menu > .nav-item > .nav-link:hover .nav-arrow {
    color: var(--octal-sidebar-link-hover-color);
}

.octal-theme .sidebar-menu > .nav-item > .nav-link.active .nav-icon,
.octal-theme .sidebar-menu > .nav-item > .nav-link.active .nav-arrow,
.octal-theme .sidebar-menu > .nav-item.menu-open > .nav-link .nav-icon,
.octal-theme .sidebar-menu > .nav-item.menu-open > .nav-link .nav-arrow {
    color: var(--octal-sidebar-link-active);
}

[data-bs-theme='light'] .octal-theme .sidebar-menu > .nav-item > .nav-link.active .nav-icon,
[data-bs-theme='light'] .octal-theme .sidebar-menu > .nav-item > .nav-link.active .nav-arrow,
[data-bs-theme='light'] .octal-theme .sidebar-menu > .nav-item.menu-open > .nav-link .nav-icon,
[data-bs-theme='light'] .octal-theme .sidebar-menu > .nav-item.menu-open > .nav-link .nav-arrow {
    color: var(--octal-purple-dark);
}

/* Submenu dropdown panel */
.octal-theme .sidebar-menu .nav-treeview {
    margin: 0.2rem 0.65rem 0.55rem 1.35rem;
    padding: 0.35rem 0.25rem;
    border-left: 2px solid rgba(168, 85, 247, 0.35);
    border-radius: 0 0.5rem 0.5rem 0;
    background: rgba(168, 85, 247, 0.06);
}

[data-bs-theme='dark'] .octal-theme .sidebar-menu .nav-treeview {
    background: rgba(168, 85, 247, 0.08);
    border-left-color: rgba(168, 85, 247, 0.45);
}

[data-bs-theme='light'] .octal-theme .sidebar-menu .nav-treeview {
    background: rgba(168, 85, 247, 0.04);
    border-left-color: rgba(168, 85, 247, 0.25);
}

.octal-theme .sidebar-menu .nav-treeview .nav-link {
    padding: 0.38rem 0.65rem 0.38rem 0.5rem;
    margin: 0.1rem 0.25rem;
    font-size: 0.8125rem;
    border-radius: 0.375rem;
    color: var(--octal-text-muted);
    box-shadow: none !important;
}

.octal-theme .sidebar-menu .nav-treeview .nav-link .nav-icon {
    font-size: 0.5rem;
    width: 0.85rem;
    margin-right: 0.35rem;
    opacity: 0.55;
}

.octal-theme .sidebar-menu .nav-treeview .nav-link p {
    font-size: 0.8125rem;
    font-weight: 400;
}

.octal-theme .sidebar-menu .nav-treeview .nav-link:hover {
    background: rgba(168, 85, 247, 0.14);
    color: var(--octal-sidebar-link-hover-color);
}

.octal-theme .sidebar-menu .nav-treeview .nav-link:hover .nav-icon {
    opacity: 1;
    color: var(--octal-purple);
}

.octal-theme .sidebar-menu .nav-treeview .nav-link.active {
    background: rgba(168, 85, 247, 0.22) !important;
    color: var(--octal-purple-light) !important;
    box-shadow: none !important;
    font-weight: 600;
}

[data-bs-theme='light'] .octal-theme .sidebar-menu .nav-treeview .nav-link {
    color: #6b7280;
}

[data-bs-theme='light'] .octal-theme .sidebar-menu .nav-treeview .nav-link.active {
    background: rgba(168, 85, 247, 0.14) !important;
    color: var(--octal-purple-dark) !important;
}

[data-bs-theme='light'] .octal-theme .sidebar-menu .nav-treeview .nav-link.active .nav-icon {
    color: var(--octal-purple);
    opacity: 1;
}

.octal-theme .sidebar-menu .nav-treeview .nav-link.active .nav-icon {
    opacity: 1;
    color: var(--octal-purple-light);
}

/* Main content */
.octal-theme .app-main {
    background: var(--octal-bg);
}

.octal-theme .app-content-header {
    border-bottom: 1px solid var(--octal-border);
}

.octal-theme .app-footer {
    background: var(--octal-header-bg);
    border-top: 1px solid var(--octal-border);
    color: var(--octal-text-muted);
}

/* Cards */
.octal-theme .card {
    background: var(--octal-surface);
    border: 1px solid var(--octal-border);
    color: var(--octal-text);
}

.octal-theme .card-header {
    background: var(--octal-surface-raised);
    border-bottom: 1px solid var(--octal-border);
}

.octal-theme .card-outline.card-primary {
    border-top: 3px solid var(--octal-purple) !important;
}

/* Buttons */
.octal-theme .btn-primary {
    background: linear-gradient(135deg, var(--octal-purple), var(--octal-purple-dark));
    border-color: var(--octal-purple-dark);
    color: #fff;
}

.octal-theme .btn-primary:hover,
.octal-theme .btn-primary:focus {
    background: linear-gradient(135deg, var(--octal-purple-light), var(--octal-purple));
    border-color: var(--octal-purple);
    box-shadow: 0 0 0 0.2rem var(--octal-purple-glow);
    color: #fff;
}

.octal-theme .btn-outline-primary {
    color: var(--octal-link);
    border-color: var(--octal-purple);
}

.octal-theme .btn-outline-primary:hover {
    background: var(--octal-purple);
    border-color: var(--octal-purple);
    color: #fff;
}

/* Forms */
.octal-theme .form-control,
.octal-theme .form-select,
.octal-theme .input-group-text {
    background: var(--octal-surface-raised);
    border-color: var(--octal-border);
    color: var(--octal-text);
}

.octal-theme .form-control:focus,
.octal-theme .form-select:focus {
    background: var(--octal-surface-raised);
    border-color: var(--octal-purple);
    box-shadow: 0 0 0 0.2rem var(--octal-purple-glow);
    color: var(--octal-text);
}

/* Tables */
.octal-theme .table {
    --bs-table-bg: transparent;
    --bs-table-color: var(--octal-text);
    --bs-table-border-color: var(--octal-border);
    --bs-table-striped-bg: rgba(168, 85, 247, 0.04);
    --bs-table-hover-bg: rgba(168, 85, 247, 0.08);
}

.octal-theme .table-light {
    --bs-table-bg: var(--octal-surface-raised);
    --bs-table-color: var(--octal-text);
}

/* Dashboard stat cards */
.octal-theme .card.text-bg-primary {
    background: linear-gradient(135deg, var(--octal-purple-dark), var(--octal-purple)) !important;
    border: none;
    color: #fff !important;
}

.octal-theme .card.text-bg-info {
    background: linear-gradient(135deg, #5b21b6, #7c3aed) !important;
    border: none;
    color: #fff !important;
}

[data-bs-theme='light'] .octal-theme .card.text-bg-secondary {
    background: linear-gradient(135deg, #525252, #737373) !important;
    border: none;
    color: #fff !important;
}

[data-bs-theme='dark'] .octal-theme .card.text-bg-secondary {
    background: linear-gradient(135deg, #262626, #404040) !important;
    border: none;
    color: #fff !important;
}

.octal-theme .card.border-warning {
    border-color: #eab308 !important;
    background: var(--octal-surface);
}

[data-bs-theme='light'] .octal-theme .card.border-warning h6,
[data-bs-theme='light'] .octal-theme .card.border-warning h3 {
    color: var(--octal-text);
}

/* Dropdowns & modals */
.octal-theme .dropdown-menu {
    background: var(--octal-surface);
    border: 1px solid var(--octal-border);
}

.octal-theme .dropdown-item {
    color: var(--octal-text);
}

.octal-theme .dropdown-item:hover {
    background: var(--octal-purple-soft);
    color: var(--octal-link);
}

.octal-theme .modal-content {
    background: var(--octal-surface);
    border: 1px solid var(--octal-border);
    color: var(--octal-text);
}

/* Login page — layout handled in login.css */
body.octal-login .login-box {
    width: 420px;
}

/* Pagination & badges */
.octal-theme .page-link {
    background: var(--octal-surface);
    border-color: var(--octal-border);
    color: var(--octal-link);
}

.octal-theme .page-item.active .page-link {
    background: var(--octal-purple);
    border-color: var(--octal-purple);
    color: #fff;
}

.octal-theme .badge.text-bg-light {
    background: rgba(168, 85, 247, 0.15) !important;
    color: var(--octal-link) !important;
}

/* Breadcrumb */
.octal-theme .breadcrumb-item a {
    color: var(--octal-link);
}

.octal-theme .breadcrumb-item.active {
    color: var(--octal-text-muted);
}

[data-bs-theme='light'] .octal-theme .text-muted {
    color: var(--octal-text-muted) !important;
}

[data-bs-theme='light'] .octal-theme .list-group-item {
    background: var(--octal-surface);
    border-color: var(--octal-border);
    color: var(--octal-text);
}

[data-bs-theme='light'] .octal-theme .list-group-item-warning {
    background: #fef9c3;
    color: #713f12;
}