/* THEME SYSTEM CSS VARIABLES */

:root {
    /* LIGHT THEME (DEFAULT) */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --text-muted: #adb5bd;
    --border-color: #dee2e6;
    --border-light: #e9ecef;
    --shadow-sm: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 1rem 3rem rgba(0, 0, 0, 0.175);

    /* CARD COLORS */
    --card-bg: #ffffff;
    --card-border: #dee2e6;
    --card-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);

    /* BUTTON COLORS */
    --btn-primary-bg: #212529;
    --btn-primary-border: #212529;
    --btn-primary-color: #ffffff;
    --btn-secondary-bg: #6c757d;
    --btn-secondary-border: #6c757d;
    --btn-secondary-color: #ffffff;
    --btn-outline-border: #212529;
    --btn-outline-color: #212529;
    --btn-outline-hover-bg: #212529;
    --btn-outline-hover-color: #ffffff;

    /* FORM COLORS */
    --input-bg: rgba(255, 255, 255, 0.15);
    --input-border: #ced4da;
    --input-focus-border: #86b7fe;
    --input-focus-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
    --input-placeholder: #6c757d;

    /* NAVIGATION COLORS */
    --nav-bg: #ffffff;
    --nav-border: #dee2e6;
    --nav-link-color: #495057;
    --nav-link-hover-color: #212529;
    --nav-link-hover-bg: rgba(0, 0, 0, 0.05);
    --nav-link-active-bg: #e9ecef;
    --nav-link-active-color: #212529;

    /* TOP BAR SPECIFIC COLORS */
    --topbar-button-hover-bg: rgba(0, 0, 0, 0.08);
    --topbar-button-hover-color: #000000;
    --dropdown-item-hover-bg: #f8f9fa;
    --dropdown-item-hover-color: #212529;

    /* SIDEBAR COLORS */
    --sidebar-bg: linear-gradient(to bottom, #2c3e50, #1a252f);
    --sidebar-border: #34495e;
    --sidebar-item-hover: rgba(255, 255, 255, 0.1);
    --sidebar-item-active: rgba(255, 255, 255, 0.15);
    --sidebar-text: #ffffff;
    --sidebar-text-muted: rgba(255, 255, 255, 0.7);

    /* STATUS COLORS */
    --success-color: #198754;
    --success-bg: #d1e7dd;
    --danger-color: #dc3545;
    --danger-bg: #f8d7da;
    --warning-color: #fd7e14;
    --warning-bg: #fff3cd;
    --info-color: #0dcaf0;
    --info-bg: #d1ecf1;

    /* HEADER COLORS */
    --header-bg: #ffffff;
    --header-badge-bg: #f8f9fa;
    --header-badge-color: #495057;
    --header-title-color: #212529;
    --header-subtitle-color: #6c757d;

    /* COMPONENT SPECIFIC BACKGROUNDS */
    --announcement-header-bg: #fdfdfd;
    --empty-state-bg: #fdfdfd;
    --classes-list-bg: #fdfdfd;
}

/* DARK THEME */
[data-theme="dark"] {
    --bg-primary: #121212;
    --bg-secondary: #1e1e1e;
    --bg-tertiary: #2d2d2d;
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --text-muted: #888888;
    --border-color: #404040;
    --border-light: #333333;
    --shadow-sm: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.3);
    --shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 1rem 3rem rgba(0, 0, 0, 0.5);

    /* CARD COLORS */
    --card-bg: #1e1e1e;
    --card-border: #404040;
    --card-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.3);

    /* BUTTON COLORS */
    --btn-primary-bg: #ffffff;
    --btn-primary-border: #ffffff;
    --btn-primary-color: #121212;
    --btn-secondary-bg: #6c757d;
    --btn-secondary-border: #6c757d;
    --btn-secondary-color: #ffffff;
    --btn-outline-border: #ffffff;
    --btn-outline-color: #ffffff;
    --btn-outline-hover-bg: #ffffff;
    --btn-outline-hover-color: #121212;

    /* FORM COLORS */
    --input-bg: rgba(255, 255, 255, 0.15);
    --input-border: #404040;
    --input-focus-border: #86b7fe;
    --input-focus-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
    --input-placeholder: #888888;

    /* NAVIGATION COLORS */
    --nav-bg: #1e1e1e;
    --nav-border: #404040;
    --nav-link-color: #b3b3b3;
    --nav-link-hover-color: #ffffff;
    --nav-link-hover-bg: rgba(255, 255, 255, 0.1);
    --nav-link-active-bg: #2d2d2d;
    --nav-link-active-color: #ffffff;

    /* TOP BAR SPECIFIC COLORS */
    --topbar-button-hover-bg: rgba(255, 255, 255, 0.15);
    --topbar-button-hover-color: #ffffff;
    --dropdown-item-hover-bg: #2d2d2d;
    --dropdown-item-hover-color: #ffffff;

    /* SIDEBAR COLORS */
    --sidebar-bg: linear-gradient(to bottom, #1a252f, #0f1419);
    --sidebar-border: #2c3e50;
    --sidebar-item-hover: rgba(255, 255, 255, 0.08);
    --sidebar-item-active: rgba(255, 255, 255, 0.12);
    --sidebar-text: #ffffff;
    --sidebar-text-muted: rgba(255, 255, 255, 0.6);

    /* STATUS COLORS */
    --success-color: #28a745;
    --success-bg: #155724;
    --danger-color: #dc3545;
    --danger-bg: #721c24;
    --warning-color: #ffc107;
    --warning-bg: #856404;
    --info-color: #17a2b8;
    --info-bg: #0c5460;

    /* HEADER COLORS */
    --header-bg: #1e1e1e;
    --header-badge-bg: #2d2d2d;
    --header-badge-color: #b3b3b3;
    --header-title-color: #ffffff;
    --header-subtitle-color: #b3b3b3;

    /* COMPONENT SPECIFIC BACKGROUNDS */
    --announcement-header-bg: #161616;
    --empty-state-bg: #161616;
    --classes-list-bg: #161616;
}

/* SYSTEM THEME - USES PREFERS-COLOR-SCHEME */
@media (prefers-color-scheme: dark) {
    [data-theme="system"] {
        --bg-primary: #121212;
        --bg-secondary: #1e1e1e;
        --bg-tertiary: #2d2d2d;
        --text-primary: #ffffff;
        --text-secondary: #b3b3b3;
        --text-muted: #888888;
        --border-color: #404040;
        --border-light: #333333;
        --shadow-sm: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.3);
        --shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.4);
        --shadow-lg: 0 1rem 3rem rgba(0, 0, 0, 0.5);

        /* CARD COLORS */
        --card-bg: #1e1e1e;
        --card-border: #404040;
        --card-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.3);

        /* BUTTON COLORS */
        --btn-primary-bg: #ffffff;
        --btn-primary-border: #ffffff;
        --btn-primary-color: #121212;
        --btn-secondary-bg: #6c757d;
        --btn-secondary-border: #6c757d;
        --btn-secondary-color: #ffffff;
        --btn-outline-border: #ffffff;
        --btn-outline-color: #ffffff;
        --btn-outline-hover-bg: #ffffff;
        --btn-outline-hover-color: #121212;

        /* FORM COLORS */
        --input-bg: rgba(255, 255, 255, 0.15);
        --input-border: #404040;
        --input-focus-border: #86b7fe;
        --input-focus-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
        --input-placeholder: #888888;

        /* NAVIGATION COLORS */
        --nav-bg: #1e1e1e;
        --nav-border: #404040;
        --nav-link-color: #b3b3b3;
        --nav-link-hover-color: #ffffff;
        --nav-link-hover-bg: rgba(255, 255, 255, 0.1);
        --nav-link-active-bg: #2d2d2d;
        --nav-link-active-color: #ffffff;

        /* TOP BAR SPECIFIC COLORS */
        --topbar-button-hover-bg: rgba(255, 255, 255, 0.15);
        --topbar-button-hover-color: #ffffff;
        --dropdown-item-hover-bg: #2d2d2d;
        --dropdown-item-hover-color: #ffffff;

        /* SIDEBAR COLORS */
        --sidebar-bg: linear-gradient(to bottom, #1a252f, #0f1419);
        --sidebar-border: #2c3e50;
        --sidebar-item-hover: rgba(255, 255, 255, 0.08);
        --sidebar-item-active: rgba(255, 255, 255, 0.12);
        --sidebar-text: #ffffff;
        --sidebar-text-muted: rgba(255, 255, 255, 0.6);

        /* STATUS COLORS */
        --success-color: #28a745;
        --success-bg: #155724;
        --danger-color: #dc3545;
        --danger-bg: #721c24;
        --warning-color: #ffc107;
        --warning-bg: #856404;
        --info-color: #17a2b8;
        --info-bg: #0c5460;

        /* HEADER COLORS */
        --header-bg: #1e1e1e;
        --header-badge-bg: #2d2d2d;
        --header-badge-color: #b3b3b3;
        --header-title-color: #ffffff;
        --header-subtitle-color: #b3b3b3;

        /* COMPONENT SPECIFIC BACKGROUNDS */
        --announcement-header-bg: #161616;
        --empty-state-bg: #161616;
        --classes-list-bg: #161616;
    }
}

/* APPLY THEME VARIABLES TO COMMON ELEMENTS */
body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* NAVBAR THEMING */
.navbar {
    background-color: var(--nav-bg) !important;
    border-bottom: 1px solid var(--nav-border) !important;
}

.navbar .navbar-brand {
    color: var(--text-primary) !important;
}

.navbar .nav-link {
    color: var(--nav-link-color) !important;
}

.navbar .nav-link:hover,
.navbar .nav-link:focus {
    color: var(--nav-link-hover-color) !important;
    background-color: var(--nav-link-hover-bg) !important;
}

.card {
    background-color: var(--card-bg);
    border-color: var(--card-border);
    box-shadow: var(--card-shadow);
}

.btn-dark {
    background-color: var(--btn-primary-bg);
    border-color: var(--btn-primary-border);
    color: var(--btn-primary-color);
}

.btn-dark:hover,
.btn-dark:focus {
    background-color: var(--btn-primary-bg);
    border-color: var(--btn-primary-border);
    color: var(--btn-primary-color);
    opacity: 0.85;
}

/* GENERAL BUTTON HOVER STYLES FOR THEME BUTTONS */
.btn[style*="background-color: var(--btn-primary-bg)"]:hover,
button[style*="background-color: var(--btn-primary-bg)"]:hover {
    opacity: 0.85 !important;
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: all 0.2s ease-in-out;
}

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

.btn-outline-dark:hover,
.btn-outline-dark:focus {
    background-color: var(--btn-outline-hover-bg);
    border-color: var(--btn-outline-border);
    color: var(--btn-outline-hover-color);
}

.form-control,
.form-select {
    background-color: var(--input-bg);
    border-color: var(--input-border);
    color: var(--text-primary);
}

.form-control:focus,
.form-select:focus {
    background-color: var(--input-bg);
    border-color: var(--input-focus-border);
    box-shadow: var(--input-focus-shadow);
    color: var(--text-primary);
}

.form-control:hover,
.form-select:hover {
    background-color: var(--input-bg);
    border-color: var(--nav-link-hover-color);
    color: var(--text-primary);
    transition: all 0.2s ease-in-out;
}

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

/* FORM SELECT OPTIONS STYLING */
.form-select option {
    background-color: var(--input-bg);
    color: var(--text-primary);
}

.list-group-item {
    background-color: var(--card-bg);
    border-color: var(--card-border);
    color: var(--text-primary);
}

.list-group-item.active {
    background-color: var(--nav-link-active-bg);
    border-color: var(--nav-link-active-bg);
    color: var(--nav-link-active-color);
}

.list-group-item:hover {
    background-color: var(--sidebar-item-hover);
    color: var(--text-primary);
}

.text-muted {
    color: var(--text-muted) !important;
}

.text-secondary {
    color: var(--text-secondary) !important;
}

.border {
    border-color: var(--border-color) !important;
}

.border-top,
.border-bottom,
.border-start,
.border-end {
    border-color: var(--border-color) !important;
}

/* THEME TOGGLE BUTTON */
.btn-link.nav-link {
    color: var(--nav-link-color) !important;
    text-decoration: none;
    padding: 0.5rem 0.75rem;
}

.btn-link.nav-link:hover {
    color: var(--nav-link-hover-color) !important;
}

.btn-link.nav-link i {
    font-size: 1.1rem;
}

/* TOP BAR HOVER STYLES */
.top-header .btn:hover {
    background-color: var(--topbar-button-hover-bg) !important;
    color: var(--topbar-button-hover-color) !important;
    border-radius: 0.375rem;
}

/* SIDEBAR BUTTON OVERRIDE - MAINTAIN WHITE COLOR */
#moithuti-sidebar .btn,
#moithuti-sidebar .btn:hover,
#moithuti-sidebar .btn:focus,
#moithuti-sidebar .btn-link,
#moithuti-sidebar .btn-link:hover,
#moithuti-sidebar .btn-link:focus {
    color: #ffffff !important;
    background-color: transparent !important;
}

#moithuti-sidebar .btn:hover,
#moithuti-sidebar .btn-link:hover {
    background-color: var(--sidebar-item-hover) !important;
}

.top-header .dropdown-item:hover {
    background-color: var(--dropdown-item-hover-bg) !important;
    color: var(--dropdown-item-hover-color) !important;
}

.top-header .dropdown-item:focus {
    background-color: var(--dropdown-item-hover-bg) !important;
    color: var(--dropdown-item-hover-color) !important;
}

/* NOTIFICATION DROPDOWN ITEMS HOVER */
.notification-bell .dropdown-item:hover {
    background-color: var(--dropdown-item-hover-bg) !important;
}

/* MARK AS READ BUTTON HOVER IN NOTIFICATION DROPDOWN */
.notification-bell .btn-link:hover {
    background-color: var(--topbar-button-hover-bg) !important;
    color: var(--btn-primary-bg) !important;
    border-radius: 0.25rem;
}

/* USER AVATAR STYLING AND HOVER EFFECT */
.user-avatar-circle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--btn-primary-bg);
    color: var(--btn-primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    text-decoration: none;
    overflow: hidden;
    cursor: pointer;
}

.user-avatar-circle:hover {
    transform: scale(1.05);
    box-shadow: 0 0 0 3px var(--topbar-button-hover-bg);
    color: var(--btn-primary-color);
    text-decoration: none;
}

/* NOTIFICATION BELL HOVER EFFECT */
.notification-bell .btn:hover {
    background-color: var(--topbar-button-hover-bg) !important;
    color: var(--topbar-button-hover-color) !important;
    border-radius: 0.375rem;
}

/* NOTIFICATION BADGE STYLING */
.notification-badge {
    font-size: 0.7rem;
    min-width: 1.2rem;
    height: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* THEME TOGGLE BUTTON HOVER */
.top-header button[onclick="window.toggleTheme()"]:hover {
    background-color: var(--topbar-button-hover-bg) !important;
    color: var(--topbar-button-hover-color) !important;
    border-radius: 0.375rem;
}

/* HEADER THEMING */

/* COMPONENT SPECIFIC BACKGROUNDS */
.announcement-header {
    background-color: var(--announcement-header-bg) !important;
}

.empty-state {
    background-color: var(--empty-state-bg) !important;
}

.classes-list {
    background-color: var(--classes-list-bg) !important;
}

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

.header-badge i {
    color: var(--header-badge-color) !important;
}

.header-title {
    color: var(--header-title-color) !important;
}

.header-subtitle {
    color: var(--header-subtitle-color) !important;
}

/* EMPTY STATE THEMING */
.empty-title {
    color: var(--text-primary) !important;
}

.empty-icon i {
    color: var(--text-secondary) !important;
}

/* THEME TRANSITION */
* {
    transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

/* TOP BAR SPECIFIC TRANSITIONS */
.top-header .btn,
.top-header .dropdown-item,
.user-avatar-circle {
    transition: all 0.2s ease-in-out;
}