/* ════════════════════════════════════════════════════════════════════
   PMLearn Platform — Custom Theme
   Primary:   rgb(50, 0, 142)   #32008E  — Deep Purple
   Secondary: rgb(244, 187, 0)  #F4BB00  — Golden Yellow
   ════════════════════════════════════════════════════════════════════ */

/* ── CSS Custom Properties ── */
:root {
    --el-primary:       #32008E;
    --el-primary-light: #4a14b0;
    --el-primary-dark:  #24006a;
    --el-primary-bg:    #f0eaf8;
    --el-primary-subtle:#e0d4f5;
    --el-primary-rgb:   50, 0, 142;

    --el-secondary:       #F4BB00;
    --el-secondary-light: #ffd03a;
    --el-secondary-dark:  #c99a00;
    --el-secondary-bg:    #fff8e1;
    --el-secondary-rgb:   244, 187, 0;

    --el-accent:        #FF6B35;
    --el-surface:       #ffffff;
    --el-background:    #F5F3F9;
    --el-card-shadow:   0 1px 3px rgba(50, 0, 142, 0.06), 0 4px 12px rgba(50, 0, 142, 0.04);
    --el-card-hover:    0 4px 12px rgba(50, 0, 142, 0.08), 0 8px 24px rgba(50, 0, 142, 0.06);
    --el-radius:        0.75rem;
    --el-radius-lg:     1rem;
    --el-radius-sm:     0.5rem;
    --el-transition:    all 0.25s cubic-bezier(0.4, 0, 0.2, 1);

    /* Override Bootstrap CSS vars */
    --bs-primary:       #32008E;
    --bs-primary-rgb:   50, 0, 142;
    --bs-secondary:     #F4BB00;
    --bs-secondary-rgb: 244, 187, 0;
    --bs-warning:       #F4BB00;
    --bs-warning-rgb:   244, 187, 0;
    --bs-info:          #6C5CE7;
    --bs-info-rgb:      108, 92, 231;
    --bs-body-font-family: 'Inter', system-ui, -apple-system, sans-serif;
    --bs-body-bg: var(--el-background);
}

html, body, #root {
    min-height: 100%;
}

.app-shell {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.app-main {
    flex: 1 0 auto;
}

/* ── Typography ── */
body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--el-background);
    padding-top: 72px;
    color: #2d2640;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6, .fw-bold, .fw-semibold {
    font-family: 'Space Grotesk', 'Inter', system-ui, sans-serif;
    color: #1a0e33;
}

/* ── Bootstrap Color Overrides ── */

/* Primary */
.bg-primary   { background-color: var(--el-primary) !important; }
.text-primary { color: var(--el-primary) !important; }
.border-primary { border-color: var(--el-primary) !important; }

.btn-primary {
    background: var(--el-primary);
    border-color: var(--el-primary);
    border-radius: var(--el-radius-sm);
    font-weight: 600;
    letter-spacing: 0.01em;
    transition: var(--el-transition);
}
.btn-primary:hover, .btn-primary:focus {
    background: var(--el-primary-light);
    border-color: var(--el-primary-light);
    box-shadow: 0 4px 14px rgba(var(--el-primary-rgb), 0.35);
    transform: translateY(-1px);
}
.btn-primary:active {
    background: var(--el-primary-dark);
    border-color: var(--el-primary-dark);
    transform: translateY(0);
}

.btn-outline-primary {
    color: var(--el-primary);
    border-color: var(--el-primary);
    border-radius: var(--el-radius-sm);
    font-weight: 500;
    transition: var(--el-transition);
}
.btn-outline-primary:hover, .btn-outline-primary:focus {
    background: var(--el-primary);
    border-color: var(--el-primary);
    color: #fff;
    box-shadow: 0 4px 14px rgba(var(--el-primary-rgb), 0.25);
}

/* Secondary / Warning → Golden Yellow */
.bg-warning   { background-color: var(--el-secondary) !important; }
.text-warning { color: var(--el-secondary-dark) !important; }
.badge.bg-warning { color: #1a0e33 !important; }
.btn-warning {
    background: var(--el-secondary);
    border-color: var(--el-secondary);
    color: #1a0e33;
    font-weight: 600;
    border-radius: var(--el-radius-sm);
    transition: var(--el-transition);
}
.btn-warning:hover {
    background: var(--el-secondary-light);
    border-color: var(--el-secondary-light);
    color: #1a0e33;
}

.btn-outline-warning {
    color: var(--el-secondary-dark);
    border-color: var(--el-secondary);
    border-radius: var(--el-radius-sm);
}
.btn-outline-warning:hover {
    background: var(--el-secondary);
    color: #1a0e33;
}

/* Success override — use a rich teal-green */
.bg-success   { background-color: #00B37A !important; }
.text-success { color: #00B37A !important; }
.btn-success  {
    background: #00B37A;
    border-color: #00B37A;
    border-radius: var(--el-radius-sm);
    font-weight: 600;
    transition: var(--el-transition);
}
.btn-success:hover {
    background: #009966;
    border-color: #009966;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 179, 122, 0.3);
}

.btn-outline-success {
    color: #00B37A;
    border-color: #00B37A;
    border-radius: var(--el-radius-sm);
}
.btn-outline-success:hover {
    background: #00B37A;
    color: #fff;
}

/* Info override — soft purple */
.bg-info      { background-color: #6C5CE7 !important; }
.text-info    { color: #6C5CE7 !important; }

/* Secondary bg override — use muted purple */
.bg-secondary { background-color: #6b6186 !important; }

/* Danger — keep vivid */
.btn-danger {
    border-radius: var(--el-radius-sm);
    font-weight: 600;
    transition: var(--el-transition);
}
.btn-danger:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(220, 53, 69, 0.3);
}

/* ── Navbar ── */
.navbar {
    background: linear-gradient(135deg, var(--el-primary) 0%, var(--el-primary-dark) 100%) !important;
    box-shadow: 0 2px 12px rgba(var(--el-primary-rgb), 0.2);
    border-bottom: 3px solid var(--el-secondary);
    padding: 0.6rem 1rem;
    backdrop-filter: blur(10px);
}

.navbar-brand {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: #fff !important;
}

.navbar-dark .navbar-nav .nav-link {
    color: rgba(255,255,255,0.85);
    font-weight: 500;
    font-size: 0.92rem;
    padding: 0.5rem 0.85rem;
    border-radius: var(--el-radius-sm);
    transition: var(--el-transition);
}
.navbar-dark .navbar-nav .nav-link:hover {
    color: #fff;
    background: rgba(255,255,255,0.1);
}
.navbar-dark .navbar-nav .nav-link.active {
    color: var(--el-secondary);
}

.btn-outline-light {
    border-color: rgba(255,255,255,0.4);
    color: #fff;
    font-weight: 500;
    border-radius: var(--el-radius-sm);
    transition: var(--el-transition);
}
.btn-outline-light:hover {
    background: rgba(255,255,255,0.15);
    border-color: rgba(255,255,255,0.6);
    color: #fff;
}

/* ── Cards ── */
.card {
    border: 1px solid rgba(var(--el-primary-rgb), 0.06);
    border-radius: var(--el-radius);
    box-shadow: var(--el-card-shadow);
    transition: var(--el-transition);
    background: var(--el-surface);
}
.card:hover {
    box-shadow: var(--el-card-hover);
    transform: translateY(-2px);
}

/* Stat cards with colored backgrounds */
.card.border-0.bg-primary,
.card.border-0.bg-success,
.card.border-0.bg-info,
.card.border-0.bg-warning {
    border-radius: var(--el-radius);
    border: none !important;
    position: relative;
    overflow: hidden;
}
.card.border-0.bg-primary::before,
.card.border-0.bg-success::before,
.card.border-0.bg-info::before,
.card.border-0.bg-warning::before {
    content: '';
    position: absolute;
    top: -30%;
    right: -20%;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
}

/* ── Buttons global refinements ── */
.btn {
    border-radius: var(--el-radius-sm);
    font-weight: 500;
    transition: var(--el-transition);
    letter-spacing: 0.01em;
}
.btn-sm {
    border-radius: 0.4rem;
    font-size: 0.82rem;
    padding: 0.3rem 0.7rem;
}
.btn-lg {
    border-radius: var(--el-radius);
    font-size: 1.05rem;
    padding: 0.65rem 1.5rem;
}

.btn-outline-secondary {
    color: #6b6186;
    border-color: #d0c9e0;
    border-radius: var(--el-radius-sm);
}
.btn-outline-secondary:hover {
    background: var(--el-primary-bg);
    border-color: var(--el-primary);
    color: var(--el-primary);
}

/* ── Badges ── */
.badge {
    border-radius: 2rem;
    padding: 0.35em 0.75em;
    font-weight: 600;
    font-size: 0.75rem;
    letter-spacing: 0.02em;
}
.badge.bg-primary { background-color: var(--el-primary) !important; }
.badge.bg-secondary {
    background-color: var(--el-primary-bg) !important;
    color: var(--el-primary) !important;
}

/* ── Progress bars ── */
.progress {
    border-radius: 1rem;
    background: var(--el-primary-subtle);
    overflow: hidden;
}
.progress-bar {
    border-radius: 1rem;
    transition: width 0.6s ease;
}
.progress-bar.bg-success {
    background: linear-gradient(90deg, #00B37A, #00d68f) !important;
}

/* ── Alerts ── */
.alert {
    border-radius: var(--el-radius);
    border: none;
    font-weight: 500;
}
.alert-danger {
    background: #fdf0f0;
    color: #c62828;
    border-left: 4px solid #e53935;
}
.alert-success {
    background: #e8f8f0;
    color: #00704a;
    border-left: 4px solid #00B37A;
}
.alert-warning {
    background: var(--el-secondary-bg);
    color: #7a6200;
    border-left: 4px solid var(--el-secondary);
}
.alert-info {
    background: #ece8fb;
    color: #32008E;
    border-left: 4px solid #6C5CE7;
}

/* ── Forms ── */
.form-control, .form-select {
    border-radius: var(--el-radius-sm);
    border: 1.5px solid #d0c9e0;
    padding: 0.55rem 0.85rem;
    font-size: 0.92rem;
    transition: var(--el-transition);
    background: #fff;
}
.form-control:focus, .form-select:focus {
    border-color: var(--el-primary);
    box-shadow: 0 0 0 3px rgba(var(--el-primary-rgb), 0.12);
}
.form-label {
    font-weight: 600;
    font-size: 0.88rem;
    color: #3d2e66;
    margin-bottom: 0.3rem;
}

/* ── Tables ── */
.table {
    border-radius: var(--el-radius);
    overflow: hidden;
}
.table thead th {
    background: var(--el-primary-bg);
    color: var(--el-primary);
    font-weight: 700;
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 2px solid var(--el-primary-subtle);
    padding: 0.75rem 1rem;
}
.table-light th, .table-light td {
    background: var(--el-primary-bg) !important;
}
.table tbody tr {
    transition: background 0.15s ease;
}
.table tbody tr:hover {
    background: rgba(var(--el-primary-rgb), 0.03);
}
.table td {
    vertical-align: middle;
    padding: 0.7rem 1rem;
}

/* ── Hero Section ── */
.hero {
    background: linear-gradient(135deg, var(--el-primary) 0%, #4a14b0 50%, var(--el-primary-dark) 100%);
    color: white;
    padding: 5rem 1rem;
    position: relative;
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: rgba(var(--el-secondary-rgb), 0.08);
}
.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -5%;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: rgba(255,255,255,0.04);
}

/* ── Spinner ── */
.spinner-border.text-primary {
    color: var(--el-primary) !important;
}

/* ── Star Ratings ── */
.star-rating, .text-warning {
    color: var(--el-secondary) !important;
}

/* ── Page content ── */
.page-content {
    min-height: calc(100vh - 72px);
}

/* ── Course description truncation ── */
.course-description {
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

/* ── Loading spinner container ── */
.loading-spinner {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 200px;
}

/* ── Lesson content responsiveness ── */
.lesson-content-body {
    overflow-wrap: anywhere;
    word-break: break-word;
}
.lesson-content-body img,
.lesson-content-body iframe,
.lesson-content-body video {
    max-width: 100%;
    height: auto;
}
.lesson-content-body pre {
    overflow-x: auto;
}

.lesson-pdf-viewer {
    width: 100%;
    height: 85vh;
    border: none;
    border-radius: 0.5rem;
    background: #525659;
}

/* ── Sidebar / list groups ── */
.list-group-item {
    border-color: rgba(var(--el-primary-rgb), 0.08);
    transition: var(--el-transition);
    font-size: 0.9rem;
}
.list-group-item.active {
    background: var(--el-primary) !important;
    border-color: var(--el-primary) !important;
}
.list-group-item-action:hover {
    background: var(--el-primary-bg);
    color: var(--el-primary);
}

/* ── Toast refinement ── */
.toast {
    border-radius: var(--el-radius);
    border: none;
    box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}

/* ── Dropdown menus ── */
.dropdown-menu {
    border: 1px solid rgba(var(--el-primary-rgb), 0.08);
    border-radius: var(--el-radius);
    box-shadow: 0 8px 24px rgba(var(--el-primary-rgb), 0.08);
    padding: 0.5rem;
}
.dropdown-item {
    border-radius: var(--el-radius-sm);
    padding: 0.5rem 0.85rem;
    font-size: 0.9rem;
    transition: background 0.15s ease;
}
.dropdown-item:hover {
    background: var(--el-primary-bg);
    color: var(--el-primary);
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--el-background); }
::-webkit-scrollbar-thumb {
    background: var(--el-primary-subtle);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(var(--el-primary-rgb), 0.3);
}

/* ── Auth page styling ── */
.auth-card {
    border: none;
    border-radius: var(--el-radius-lg);
    box-shadow: 0 4px 20px rgba(var(--el-primary-rgb), 0.08);
    overflow: hidden;
}
.auth-card .card-body {
    padding: 2.5rem;
}

/* ── Stat card accent line ── */
.stat-card {
    position: relative;
    border-radius: var(--el-radius) !important;
    overflow: hidden;
}
.stat-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--el-secondary);
}

/* ── Avatar ── */
.avatar-circle {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--el-primary), var(--el-primary-light));
    color: #fff;
    border: 3px solid var(--el-secondary);
}

/* ── Section headings ── */
.section-heading {
    position: relative;
    padding-bottom: 0.75rem;
    margin-bottom: 1.5rem;
}
.section-heading::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 48px;
    height: 3px;
    border-radius: 2px;
    background: var(--el-secondary);
}

/* ── Animations ── */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(16px); }
    to   { opacity: 1; transform: translateY(0); }
}
.fade-in-up {
    animation: fadeInUp 0.4s ease forwards;
}

/* ── Dark section styling ── */
.bg-dark {
    background: linear-gradient(135deg, #1a0e33 0%, var(--el-primary-dark) 100%) !important;
}

/* ── Global branded footer ── */
.brand-footer {
    margin-top: auto;
    background-image: url("/Images/footer-element.png");
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;
    overflow: hidden;
    min-height: 64px;
    display: flex;
    align-items: center;
}
.brand-footer .container {
    width: 100%;
}
.brand-footer-tagline {
    font-size: 0.66rem;
    line-height: 1.1;
    letter-spacing: 0.025em;
    font-weight: 600;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.35);
}

/* ── Golden accent utilities ── */
.text-gold { color: var(--el-secondary) !important; }
.bg-gold   { background-color: var(--el-secondary) !important; }
.border-gold { border-color: var(--el-secondary) !important; }

/* ── Course card specific ── */
.card .badge.bg-secondary {
    background-color: var(--el-primary-bg) !important;
    color: var(--el-primary) !important;
    font-weight: 600;
}

/* ── Responsive refinements ── */
@media (max-width: 768px) {
    body { padding-top: 64px; }
    .hero { padding: 3rem 1rem; }
    .card { border-radius: var(--el-radius-sm); }
    .auth-card .card-body { padding: 1.5rem; }
    .lesson-pdf-viewer { height: 60vh; }
    .brand-footer { min-height: 56px; }
    .brand-footer-tagline { font-size: 0.6rem; }
}