/* Public pages — course catalog & course details (matches homepage brand) */

.hi-page-main {
    padding: clamp(2rem, 5vw, 3.5rem) var(--hi-pad) 4rem;
}

.hi-page-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 2.5rem;
}

.hi-page-header h1 {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--hi-primary);
    margin-bottom: 0.75rem;
}

.hi-page-header p {
    color: var(--hi-text-light);
    font-size: 1.05rem;
}

.hi-page-header .hi-section-label {
    margin-bottom: 0.75rem;
}

/* Search & filters */
.hi-catalog-toolbar {
    max-width: 720px;
    margin: 0 auto 2rem;
}

.hi-search-wrap {
    position: relative;
    margin-bottom: 1.25rem;
}

.hi-search-wrap svg {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    width: 1.15rem;
    height: 1.15rem;
    color: var(--hi-text-light);
    pointer-events: none;
}

.hi-search-input {
    width: 100%;
    padding: 0.85rem 1rem 0.85rem 2.75rem;
    font-size: 1rem;
    font-family: inherit;
    border: 1px solid var(--hi-border);
    border-radius: var(--hi-radius);
    background: var(--hi-surface);
    color: var(--hi-text);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.hi-search-input:focus {
    outline: none;
    border-color: var(--hi-accent);
    box-shadow: 0 0 0 3px rgba(196, 30, 58, 0.12);
}

.hi-filter-row {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
}

.hi-filter-btn {
    padding: 0.5rem 1.1rem;
    border-radius: 999px;
    border: 1px solid var(--hi-border);
    background: var(--hi-surface);
    color: var(--hi-text);
    font-size: 0.88rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.2s;
}

.hi-filter-btn:hover,
.hi-filter-btn.is-active {
    background: var(--hi-accent);
    border-color: var(--hi-accent);
    color: #fff;
}

/* Course grid (catalog) */
.hi-catalog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 320px), 1fr));
    gap: 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
}

.hi-catalog-card {
    background: var(--hi-surface);
    border: 1px solid var(--hi-border);
    border-radius: var(--hi-radius);
    overflow: hidden;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
    display: flex;
    flex-direction: column;
}

.hi-catalog-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(15, 23, 42, 0.08);
}

.hi-catalog-thumb {
    position: relative;
    height: 180px;
    background: linear-gradient(145deg, #f1f5f9, #e2e8f0);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hi-catalog-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hi-catalog-badge {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    padding: 0.25rem 0.65rem;
    border-radius: 999px;
    font-size: 0.72rem;
    font-weight: 700;
    background: var(--hi-surface);
    color: var(--hi-accent);
    border: 1px solid var(--hi-accent-muted);
}

.hi-catalog-badge.is-free {
    color: #15803d;
    border-color: #bbf7d0;
    background: #f0fdf4;
}

.hi-catalog-body {
    padding: 1.25rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.hi-catalog-body h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--hi-primary);
    margin-bottom: 0.5rem;
    line-height: 1.35;
}

.hi-catalog-instructor {
    font-size: 0.85rem;
    color: var(--hi-text-light);
    margin-bottom: 0.5rem;
}

.hi-catalog-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    font-size: 0.8rem;
    color: var(--hi-text-light);
    margin-bottom: 0.75rem;
}

.hi-catalog-desc {
    font-size: 0.88rem;
    color: var(--hi-text-light);
    margin-bottom: 1rem;
    flex: 1;
    line-height: 1.5;
}

.hi-catalog-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    padding-top: 1rem;
    border-top: 1px solid var(--hi-border);
}

.hi-catalog-price {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--hi-accent);
}

.hi-catalog-price.is-free {
    color: #15803d;
}

.hi-empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--hi-text-light);
}

.hi-empty-state h3 {
    color: var(--hi-primary);
    margin: 1rem 0 0.5rem;
}

/* Course details hero */
.hi-course-hero {
    background: linear-gradient(145deg, #f1f5f9 0%, #ffffff 100%);
    border-bottom: 1px solid var(--hi-border);
    padding: clamp(2rem, 5vw, 3rem) var(--hi-pad);
    position: relative;
    overflow: hidden;
}

.hi-course-hero::before {
    content: '';
    position: absolute;
    top: -20%;
    right: -5%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(196, 30, 58, 0.06) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.hi-course-hero-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr min(360px, 100%);
    gap: 2rem;
    align-items: start;
    position: relative;
    z-index: 1;
}

.hi-back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    color: var(--hi-text-light);
    text-decoration: none;
    font-size: 0.88rem;
    font-weight: 500;
    margin-bottom: 1rem;
    transition: color 0.2s;
}

.hi-back-link:hover { color: var(--hi-accent); }

.hi-course-badge {
    display: inline-block;
    padding: 0.3rem 0.75rem;
    border-radius: 999px;
    background: var(--hi-accent-soft);
    color: var(--hi-accent-hover);
    border: 1px solid var(--hi-accent-muted);
    font-size: 0.78rem;
    font-weight: 700;
    margin-bottom: 0.85rem;
}

.hi-course-hero h1 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--hi-primary);
    margin-bottom: 0.75rem;
    line-height: 1.15;
}

.hi-course-hero-lead {
    color: var(--hi-text-light);
    font-size: 1.05rem;
    margin-bottom: 1.25rem;
    line-height: 1.6;
}

.hi-course-meta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 1.25rem;
    margin-bottom: 1.25rem;
    font-size: 0.92rem;
    color: var(--hi-text);
}

.hi-course-meta-row span {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.hi-course-instructor-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.hi-course-instructor-row img,
.hi-course-instructor-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--hi-border);
    flex-shrink: 0;
}

.hi-course-instructor-avatar {
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--hi-accent-soft);
    color: var(--hi-accent);
    font-weight: 700;
    font-size: 1.1rem;
}

.hi-course-instructor-row small {
    display: block;
    color: var(--hi-text-light);
    font-size: 0.8rem;
}

.hi-course-updated {
    font-size: 0.82rem;
    color: var(--hi-text-light);
}

/* Enrollment sidebar card */
.hi-enroll-card {
    background: var(--hi-surface);
    border: 1px solid var(--hi-border);
    border-radius: var(--hi-radius);
    padding: 1.5rem;
    box-shadow: 0 8px 32px rgba(15, 23, 42, 0.08);
    position: sticky;
    top: 5.5rem;
}

.hi-enroll-price {
    text-align: center;
    font-size: 2rem;
    font-weight: 800;
    color: var(--hi-accent);
    margin-bottom: 1.25rem;
}

.hi-enroll-card .hi-btn-full {
    width: 100%;
    margin-bottom: 0.75rem;
}

.hi-enroll-note {
    text-align: center;
    font-size: 0.78rem;
    color: var(--hi-text-light);
    margin-bottom: 1rem;
}

.hi-enroll-guarantee {
    text-align: center;
    font-size: 0.85rem;
    color: var(--hi-text-light);
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--hi-border);
}

.hi-enroll-features {
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
}

.hi-enroll-features li {
    list-style: none;
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    font-size: 0.88rem;
    color: var(--hi-text);
}

/* Stats bar */
.hi-course-stats {
    background: var(--hi-surface);
    border-bottom: 1px solid var(--hi-border);
    padding: 1.5rem var(--hi-pad);
}

.hi-course-stats-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
}

.hi-course-stat {
    text-align: center;
    padding: 1rem;
    background: var(--hi-bg);
    border-radius: var(--hi-radius);
    border: 1px solid var(--hi-border);
}

.hi-course-stat-value {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--hi-accent);
    line-height: 1.1;
}

.hi-course-stat-label {
    font-size: 0.82rem;
    color: var(--hi-text-light);
    margin-top: 0.25rem;
}

/* Course content area */
.hi-course-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem var(--hi-pad) 3rem;
    display: grid;
    grid-template-columns: 1fr min(300px, 100%);
    gap: 2rem;
}

.hi-tabs-card {
    background: var(--hi-surface);
    border: 1px solid var(--hi-border);
    border-radius: var(--hi-radius);
    overflow: hidden;
}

.hi-tabs-nav {
    display: flex;
    border-bottom: 1px solid var(--hi-border);
    overflow-x: auto;
}

.hi-tab-btn {
    padding: 1rem 1.25rem;
    border: none;
    background: none;
    font-family: inherit;
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--hi-text-light);
    cursor: pointer;
    white-space: nowrap;
    border-bottom: 3px solid transparent;
    margin-bottom: -1px;
    transition: color 0.2s, border-color 0.2s;
}

.hi-tab-btn:hover { color: var(--hi-primary); }

.hi-tab-btn.active {
    color: var(--hi-accent);
    border-bottom-color: var(--hi-accent);
    font-weight: 600;
}

.hi-tab-panel {
    display: none;
    padding: 1.5rem;
    animation: hiFadeIn 0.3s ease;
}

.hi-tab-panel.active { display: block; }

@keyframes hiFadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.hi-tab-panel h2 {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--hi-primary);
    margin-bottom: 1rem;
}

.hi-check-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 0.75rem;
    margin-bottom: 2rem;
}

.hi-check-item {
    display: flex;
    gap: 0.5rem;
    font-size: 0.92rem;
    color: var(--hi-text);
}

.hi-check-item .hi-check-icon {
    color: var(--hi-accent);
    font-weight: 700;
    flex-shrink: 0;
}

.hi-prose {
    color: var(--hi-text);
    line-height: 1.7;
    margin-bottom: 2rem;
}

.hi-tag {
    display: inline-block;
    padding: 0.25rem 0.65rem;
    border-radius: 999px;
    background: var(--hi-accent-soft);
    color: var(--hi-accent-hover);
    font-size: 0.8rem;
    font-weight: 600;
}

.hi-tags-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.hi-muted-box {
    background: var(--hi-bg);
    border: 1px solid var(--hi-border);
    border-radius: var(--hi-radius);
    padding: 1.25rem;
    margin-top: 1.5rem;
}

.hi-star-filled { color: #fbbf24; }
.hi-star-empty { color: #d1d5db; }

/* Module / curriculum */
.hi-module {
    border: 1px solid var(--hi-border);
    border-radius: var(--hi-radius-sm);
    margin-bottom: 0.75rem;
    overflow: hidden;
}

.hi-module-head {
    padding: 1rem 1.15rem;
    background: var(--hi-bg);
    font-weight: 600;
    color: var(--hi-primary);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.hi-module-head:hover { background: var(--hi-accent-soft); }

.hi-lesson-list { border-top: 1px solid var(--hi-border); }

.hi-lesson-item {
    padding: 0.75rem 1.15rem;
    display: flex;
    align-items: center;
    gap: 0.65rem;
    font-size: 0.88rem;
    color: var(--hi-text);
    border-bottom: 1px solid var(--hi-border);
}

.hi-lesson-item:last-child { border-bottom: none; }
.hi-lesson-item:hover { background: var(--hi-bg); }

/* Chat modal — brand colors */
.hi-chat-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.5);
    z-index: 200;
    display: none;
    align-items: flex-end;
    justify-content: center;
    padding: 0;
}

.hi-chat-backdrop.is-open {
    display: flex;
}

@media (min-width: 640px) {
    .hi-chat-backdrop { align-items: center; padding: 1rem; }
}

.hi-chat-panel {
    background: var(--hi-surface);
    width: 100%;
    max-width: 32rem;
    border-radius: var(--hi-radius) var(--hi-radius) 0 0;
    box-shadow: 0 -8px 32px rgba(0,0,0,0.15);
    display: flex;
    flex-direction: column;
    height: 85vh;
    max-height: 32rem;
}

@media (min-width: 640px) {
    .hi-chat-panel { border-radius: var(--hi-radius); }
}

.hi-chat-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--hi-border);
}

.hi-chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
    background: var(--hi-bg);
}

.hi-chat-form {
    display: flex;
    gap: 0.5rem;
    padding: 1rem;
    border-top: 1px solid var(--hi-border);
}

.hi-chat-form input {
    flex: 1;
    padding: 0.65rem 0.85rem;
    border: 1px solid var(--hi-border);
    border-radius: var(--hi-radius-sm);
    font-family: inherit;
    font-size: 0.88rem;
}

.hi-chat-form input:focus {
    outline: none;
    border-color: var(--hi-accent);
}

.hi-bubble-out {
    background: var(--hi-accent);
    color: #fff;
    border-radius: var(--hi-radius-sm);
    padding: 0.65rem 0.85rem;
    max-width: 85%;
    margin-left: auto;
    margin-bottom: 0.5rem;
    font-size: 0.88rem;
}

.hi-bubble-in {
    background: var(--hi-surface);
    border: 1px solid var(--hi-border);
    border-radius: var(--hi-radius-sm);
    padding: 0.65rem 0.85rem;
    max-width: 85%;
    margin-bottom: 0.5rem;
    font-size: 0.88rem;
}

/* Tailwind-compat overrides when tailwind is loaded on course details */
.hi-page .text-purple-600,
.hi-page .text-indigo-600 { color: var(--hi-accent) !important; }

.hi-page .bg-indigo-600,
.hi-page .bg-purple-600,
.hi-page .from-purple-600,
.hi-page .to-indigo-600 {
    --tw-gradient-from: var(--hi-accent) !important;
    --tw-gradient-to: var(--hi-accent-hover) !important;
}

.hi-page .border-purple-400 { border-color: var(--hi-accent-muted) !important; }
.hi-page .border-indigo-600 { border-color: var(--hi-accent) !important; }
.hi-page .bg-purple-100 { background: var(--hi-accent-soft) !important; }
.hi-page .text-purple-700 { color: var(--hi-accent-hover) !important; }
.hi-page .hover\:bg-indigo-50:hover { background: var(--hi-accent-soft) !important; }
.hi-page .hover\:bg-indigo-700:hover,
.hi-page .hover\:bg-indigo-700 { background: var(--hi-accent-hover) !important; }
.hi-page .focus\:ring-indigo-500:focus { --tw-ring-color: rgba(196,30,58,0.35) !important; }
.hi-page .focus\:border-indigo-500:focus { border-color: var(--hi-accent) !important; }

.hi-page .tab-button.active {
    border-bottom-color: var(--hi-accent) !important;
    color: var(--hi-accent) !important;
}

.hi-page .stat-card .text-purple-600,
.hi-page .stat-card .text-3xl.font-bold.text-purple-600 {
    color: var(--hi-accent) !important;
}

.hi-page .bg-purple-600 { background-color: var(--hi-accent) !important; }
.hi-page .from-purple-400 { --tw-gradient-from: #f87171 !important; }
.hi-page .to-indigo-500 { --tw-gradient-to: var(--hi-accent) !important; }

@media (max-width: 900px) {
    .hi-course-hero-inner,
    .hi-course-content { grid-template-columns: 1fr; }
    .hi-enroll-card { position: static; }
    .hi-course-stats-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
    .hi-course-stats-grid { grid-template-columns: 1fr 1fr; }
}