/* ===========================
   ROOT VARIABLES
   =========================== */
:root {
    --primary-color: #4361ee;
    --sidebar-bg: #212529;
    --sidebar-width: 260px;
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --card-bg: #ffffff;
    --border-color: #e5e7eb;
    --card-bg-dark: #f0f2f5;
    --card-text-light: #212529;
    --card-muted-text: #6c757d;
    --badge-bg: #0d6efd;
    --leaderboard-row-border: rgba(0,0,0,0.06);
}

/* DARK MODE */
[data-bs-theme="dark"] {
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --bg-primary: #0f172a;
    --bg-secondary: #111827;
    --card-bg: #1f2933;
    --border-color: #374151;
    --card-bg-dark: #1c1f23;
    --card-text-light: #f8f9fa;
    --card-muted-text: #adb5bd;
    --badge-bg: #4dabf7;
    --leaderboard-row-border: rgba(255,255,255,0.06);
}

html, body {
    height: 100%;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    overflow-x: hidden;
}

/* ===========================
   LAYOUT
   =========================== */

#wrapper {
    display: flex;
    width: 100%;
    min-height: 100vh;
}

#sidebar-wrapper {
    min-width: var(--sidebar-width);
    max-width: var(--sidebar-width);
    background-color: var(--sidebar-bg);
    color: #fff;
    border-right: 1px solid rgba(255,255,255,0.1);
    display: flex;
    flex-direction: column;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}

.sidebar-heading {
    padding: 1.5rem;
    font-size: 1.3rem;
    font-weight: 800;
    color: #fff;
    background-color: rgba(0,0,0,0.2);
    text-align: center;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar-header-label {
    color: #adb5bd;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    padding: 1.5rem 1rem 0.5rem 1.5rem;
}

/* ===========================
   SIDEBAR LIST ITEMS ONLY
   FIX: was applied globally — now scoped to #sidebar-wrapper only
   =========================== */
#sidebar-wrapper .list-group-item {
    background-color: transparent !important;
    color: rgba(255,255,255,0.8) !important;
    border: none !important;
    font-size: 1rem;
    padding: 12px 25px;
    transition: all 0.2s ease-in-out;
    display: flex;
    align-items: center;
}

    #sidebar-wrapper .list-group-item:hover {
        background-color: rgba(255,255,255,0.1) !important;
        color: #fff !important;
        padding-left: 30px;
        border-left: 4px solid var(--primary-color) !important;
    }

    #sidebar-wrapper .list-group-item.active-link {
        background-color: var(--primary-color) !important;
        color: #fff !important;
        font-weight: 600;
        box-shadow: 0 4px 6px rgba(0,0,0,0.2);
        border-radius: 0 25px 25px 0;
        margin-right: 10px;
    }

    #sidebar-wrapper .list-group-item i {
        width: 25px;
        text-align: center;
        margin-right: 10px;
    }

/* ===========================
   PAGE CONTENT LIST ITEMS
   FIX: leaderboard, modals, and other page list-groups
   use theme variables so they work in both modes
   =========================== */
#page-content-wrapper .list-group-item {
    background-color: var(--card-bg);
    color: var(--text-primary);
    border-color: var(--border-color);
}

    #page-content-wrapper .list-group-item:hover {
        background-color: var(--bg-secondary);
        color: var(--text-primary);
    }

/* Modal list items (Study Materials) */
.modal-content .list-group-item {
    background-color: var(--card-bg) !important;
    color: var(--text-primary) !important;
    border-color: var(--border-color) !important;
}

    .modal-content .list-group-item:hover {
        background-color: var(--bg-secondary) !important;
    }

    .modal-content .list-group-item h6 {
        color: var(--text-primary) !important;
    }

    .modal-content .list-group-item small {
        color: var(--text-secondary) !important;
    }

.sidebar-footer {
    margin-top: auto;
    padding: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
    background: rgba(0,0,0,0.2);
}

/* ===========================
   TOP NAVBAR
   =========================== */

.top-navbar {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-color);
}

/* ===========================
   CARDS
   =========================== */

.custom-card {
    background-color: var(--card-bg);
    color: var(--text-primary);
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
}

.card-title-custom {
    font-weight: 700;
    color: var(--text-primary);
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 0.5rem;
    margin-bottom: 1rem;
}

/* ===========================
   CARD THEME FIX
   =========================== */

#page-content-wrapper .card {
    background-color: var(--card-bg);
    color: var(--text-primary);
    border-color: var(--border-color);
}

#page-content-wrapper .bg-light {
    background-color: var(--bg-secondary) !important;
    color: var(--text-primary) !important;
}

[data-bs-theme="dark"] #page-content-wrapper .bg-white {
    background-color: var(--card-bg) !important;
    color: var(--text-primary) !important;
}

#page-content-wrapper .bg-dark {
    background-color: var(--card-bg-dark) !important;
    color: var(--card-text-light) !important;
}

.profile-img-container {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    margin: 0 auto 20px;
    overflow: hidden;
    border: 5px solid var(--border-color);
    box-shadow: 0 5px 15px rgba(0,0,0,0.15);
    background-color: var(--bg-secondary);
}

    .profile-img-container img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

.form-row-custom {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    padding: 12px 0;
}

.form-label-custom {
    width: 140px;
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.form-value-custom {
    flex: 1;
    font-weight: 500;
    color: var(--text-primary);
}

.btn-action-lg {
    background-color: var(--primary-color);
    color: white;
    border-radius: 12px;
    padding: 20px;
    text-align: center;
    display: block;
    transition: transform 0.2s;
    border: none;
}

    .btn-action-lg:hover {
        transform: translateY(-3px);
        background-color: #304ccb;
        color: white;
    }

.avatar-circle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}

.icon-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    text-decoration: none;
    transition: 0.2s;
}

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

/* ===========================
   LEADERBOARD CARDS
   =========================== */

.leaderboard-card {
    background-color: var(--card-bg-dark) !important;
    color: var(--card-text-light) !important;
}

    .leaderboard-card .list-group-item {
        background-color: transparent !important;
        color: var(--card-text-light) !important;
        border-bottom: 1px solid var(--leaderboard-row-border);
        font-weight: 600;
    }

    .leaderboard-card small,
    .leaderboard-card .text-muted {
        color: var(--card-muted-text) !important;
    }

    .leaderboard-card .badge {
        background-color: var(--badge-bg) !important;
        color: #fff !important;
        font-weight: 700;
    }

    .leaderboard-card td,
    .leaderboard-card th {
        color: var(--card-text-light) !important;
        border-color: var(--leaderboard-row-border) !important;
    }

    .leaderboard-card .badge.badge-light,
    .leaderboard-card .badge.bg-light {
        background-color: rgba(255,255,255,0.15) !important;
        color: var(--card-text-light) !important;
    }

/* ===========================
   LEADERBOARD NAME & COHORT
   FIX: visible in both light and dark mode
   =========================== */

.lb-name {
    color: var(--text-primary) !important;
    font-weight: 500;
}

.lb-sub {
    font-size: .72rem;
    color: var(--text-secondary) !important;
}

/* ===========================
   GLOBAL THEME TEXT FIXES
   =========================== */

#page-content-wrapper {
    color: var(--text-primary);
    background-color: var(--bg-primary);
    flex: 1;
    min-width: 0;
}

    #page-content-wrapper .text-gray-800,
    #page-content-wrapper .text-dark {
        color: var(--text-primary) !important;
    }

    #page-content-wrapper .text-muted {
        color: var(--text-secondary) !important;
    }

.bg-primary .text-white,
.bg-success .text-white,
.bg-danger .text-white,
.bg-warning .text-white,
.card-header .text-white,
.modal-header .text-white {
    color: #ffffff !important;
}

#page-content-wrapper .table {
    color: var(--text-primary);
    background-color: transparent;
}

#page-content-wrapper .table-striped > tbody > tr:nth-of-type(odd) {
    background-color: rgba(0,0,0,0.03);
}

[data-bs-theme="dark"] #page-content-wrapper .table-striped > tbody > tr:nth-of-type(odd) {
    background-color: rgba(255,255,255,0.04);
}

#page-content-wrapper thead th {
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
    border-color: var(--border-color);
}

#page-content-wrapper .table td,
#page-content-wrapper .table th {
    border-color: var(--border-color);
}

#page-content-wrapper .form-control,
#page-content-wrapper .form-select {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border-color: var(--border-color);
}

    #page-content-wrapper .form-control:focus,
    #page-content-wrapper .form-select:focus {
        background-color: var(--bg-secondary);
        color: var(--text-primary);
        border-color: var(--primary-color);
        box-shadow: 0 0 0 0.2rem rgba(67,97,238,0.25);
    }

    #page-content-wrapper .form-control[readonly],
    #page-content-wrapper .form-control.bg-light {
        background-color: var(--bg-secondary) !important;
        color: var(--text-secondary) !important;
    }

/* ===========================
   MODAL THEME
   =========================== */

.modal-content {
    background-color: var(--card-bg) !important;
    color: var(--text-primary) !important;
    border-color: var(--border-color) !important;
}

.modal-header {
    border-color: var(--border-color);
}

.modal-body .bg-light {
    background-color: var(--bg-secondary) !important;
    color: var(--text-primary) !important;
}

/* Study Materials modal resource title */
.modal-body h6 {
    color: var(--text-primary) !important;
}

.modal-body small.text-muted {
    color: var(--text-secondary) !important;
}

#page-content-wrapper .border-bottom {
    border-color: var(--border-color) !important;
}

#page-content-wrapper .progress {
    background-color: var(--bg-secondary);
}

#page-content-wrapper .input-group-text {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border-color: var(--border-color);
}

/* ===========================
   MODULE LOCKED (Curriculum)
   =========================== */

.module-locked {
    opacity: 0.65;
    background-color: var(--bg-secondary) !important;
    color: var(--text-secondary) !important;
}

/* ===========================
   ANIMATIONS
   =========================== */

.hero-animate {
    animation: fadeUp 1s ease forwards;
}

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

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

.hero-section {
    padding: 100px 20px;
    text-align: center;
    background: linear-gradient(135deg, #4361ee, #3a0ca3);
    color: white;
    border-radius: 20px;
    margin-bottom: 40px;
    animation: fadeIn 1s ease-in-out;
}

    .hero-section h1 {
        font-size: 3rem;
        font-weight: 800;
        color: #fff;
    }

    .hero-section p {
        font-size: 1.2rem;
        opacity: 0.95;
        color: #fff;
    }

.home-card {
    background: var(--card-bg);
    color: var(--text-primary);
    border-radius: 18px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    height: 100%;
}

    .home-card:hover {
        transform: translateY(-6px);
        box-shadow: 0 20px 40px rgba(0,0,0,0.12);
    }

.gallery-img {
    width: 100%;
    height: 230px;
    object-fit: cover;
    border-radius: 16px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
    transition: transform 0.4s ease;
}

    .gallery-img:hover {
        transform: scale(1.05);
    }

.transition-hover {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    cursor: pointer;
}

    .transition-hover:hover {
        transform: translateY(-5px);
        box-shadow: 0 .5rem 1rem rgba(0,0,0,.15) !important;
    }

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

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

/* ===========================
   NOTIFICATION DROPDOWN
   =========================== */

.notif-dropdown {
    background-color: var(--card-bg) !important;
    border-color: var(--border-color) !important;
}

.notif-footer {
    background-color: var(--bg-secondary) !important;
    color: var(--text-primary) !important;
}

.notif-item {
    background-color: var(--card-bg) !important;
    color: var(--text-primary) !important;
    border-color: var(--border-color) !important;
}

    .notif-item:hover {
        background-color: var(--bg-secondary) !important;
    }

.notif-read {
    opacity: 0.7;
    background-color: var(--bg-secondary) !important;
    color: var(--text-secondary) !important;
}

.notif-unread {
    background-color: rgba(67, 97, 238, 0.07) !important;
    border-left: 4px solid var(--primary-color) !important;
    font-weight: 600;
}

.notif-message {
    color: var(--text-primary) !important;
}

/* ===========================
   DROPDOWN MENU
   =========================== */

.dropdown-menu {
    background-color: var(--card-bg);
    border-color: var(--border-color);
    color: var(--text-primary);
}

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

    .dropdown-item:hover,
    .dropdown-item:focus {
        background-color: var(--bg-secondary);
        color: var(--text-primary);
    }

/* ===========================
   PAGINATION
   =========================== */

.page-link {
    background-color: var(--card-bg);
    border-color: var(--border-color);
    color: var(--primary-color);
}

    .page-link:hover {
        background-color: var(--bg-secondary);
        border-color: var(--border-color);
        color: var(--primary-color);
    }

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

.page-item.disabled .page-link {
    background-color: var(--bg-secondary);
    border-color: var(--border-color);
    color: var(--text-secondary);
}

/* ===========================
   SUPPORT TICKETS
   =========================== */

.ticket-resolved {
    background-color: var(--bg-secondary) !important;
    opacity: 0.85;
}

.support-tabs .nav-link {
    color: var(--text-secondary);
}

    .support-tabs .nav-link.active {
        color: var(--primary-color);
        background-color: var(--card-bg);
        border-color: var(--border-color) var(--border-color) var(--card-bg);
    }

    .support-tabs .nav-link:hover:not(.active) {
        color: var(--text-primary);
        background-color: var(--bg-secondary);
    }