:root {
    --gptlms-primary: #1d4ed8;
    --gptlms-primary-deep: #172554;
    --gptlms-primary-soft: #dbeafe;
    --gptlms-accent: #0f766e;
    --gptlms-text: #0f172a;
    --gptlms-muted: #64748b;
    --gptlms-border: #dbe4f0;
    --gptlms-border-strong: #c7d6ea;
    --gptlms-surface: #ffffff;
    --gptlms-surface-soft: #f8fbff;
    --gptlms-surface-tint: #eef4fb;
    --gptlms-bg: #edf3f9;
    --gptlms-shadow-sm: 0 12px 30px rgba(15, 23, 42, 0.06);
    --gptlms-shadow-md: 0 22px 60px rgba(15, 23, 42, 0.08);
    --gptlms-shadow-lg: 0 30px 80px rgba(29, 78, 216, 0.16);
    --gptlms-radius-sm: 16px;
    --gptlms-radius-md: 24px;
    --gptlms-radius-lg: 32px;
}

.gptlms-single-course {
    background:
        radial-gradient(circle at top left, rgba(191, 219, 254, 0.62), transparent 32%),
        linear-gradient(180deg, #f7fbff 0%, var(--gptlms-bg) 100%);
    padding: 32px 0 72px;
}

.gptlms-shell {
    width: min(1240px, calc(100% - 32px));
    margin: 0 auto;
}

.gptlms-courses-grid,
.gptlms-dashboard-grid {
    display: grid;
    gap: 24px;
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.gptlms-courses-grid.columns-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.gptlms-courses-grid.columns-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.gptlms-course-card,
.gptlms-dashboard-card,
.gptlms-sidebar-card,
.gptlms-sidebar-panel,
.gptlms-topic-card,
.gptlms-content-card,
.gptlms-stat-card,
.gptlms-player-content,
.gptlms-player-sidebar,
.gptlms-proof-card {
    background: var(--gptlms-surface);
    border: 1px solid rgba(199, 214, 234, 0.8);
    border-radius: 24px;
    box-shadow: var(--gptlms-shadow-sm);
}

.gptlms-course-thumb {
    display: block;
    aspect-ratio: 16 / 9;
    background: linear-gradient(135deg, #dbeafe, #eff6ff);
}

.gptlms-course-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.gptlms-course-body,
.gptlms-dashboard-card,
.gptlms-sidebar-card,
.gptlms-sidebar-panel,
.gptlms-topic-card,
.gptlms-content-card,
.gptlms-player-content,
.gptlms-player-sidebar,
.gptlms-stat-card,
.gptlms-proof-card {
    padding: 22px;
}

.gptlms-meta-row,
.gptlms-single-hero {
    display: flex;
    justify-content: space-between;
    gap: 12px;
}

.gptlms-progress,
.gptlms-player-progress {
    height: 10px;
    background: #dbe5f1;
    border-radius: 999px;
    overflow: hidden;
    margin: 18px 0;
}

.gptlms-progress span,
.gptlms-player-progress span {
    display: block;
    height: 100%;
    background: linear-gradient(90deg, var(--gptlms-primary), #60a5fa);
    border-radius: 999px;
}

.gptlms-empty-state {
    padding: 32px;
    text-align: center;
    border: 1px dashed var(--gptlms-border);
    border-radius: 18px;
    background: #fff;
}

.gptlms-player {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 24px;
}

.gptlms-player-sidebar,
.gptlms-player-content {
    background: #fff;
}

.gptlms-player-topic ul,
.gptlms-topic-card ul,
.gptlms-sidebar-card ul,
.gptlms-sidebar-panel ul,
.gptlms-topic-items {
    list-style: none;
    padding: 0;
    margin: 0;
}

.gptlms-player-topic li {
    padding: 10px 0;
    border-bottom: 1px solid var(--gptlms-border);
}

.gptlms-player-topic li:last-child {
    border-bottom: 0;
}

.gptlms-player-topic li.is-complete a {
    color: #059669;
}

.gptlms-player-topic li.is-current a {
    font-weight: 700;
}

.gptlms-video-wrap {
    position: relative;
    overflow: hidden;
    border-radius: 24px;
    background: #020617;
    box-shadow: var(--gptlms-shadow-md);
}

.gptlms-video-wrap iframe,
.gptlms-video-wrap video,
.gptlms-youtube-embed,
.gptlms-vimeo-embed,
.gptlms-html5-video {
    display: block;
    width: 100%;
    min-height: 420px;
    border: 0;
    border-radius: 24px;
    background: #000;
}

.gptlms-html5-video::-internal-media-controls-download-button {
    display: none;
}

.gptlms-single-main,
.gptlms-single-sidebar {
    flex: 1;
}

.gptlms-single-sidebar {
    max-width: 360px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.button-hero,
.gptlms-enroll-button {
    width: 100%;
    justify-content: center;
}

.gptlms-quiz-question {
    margin-bottom: 18px;
    padding-bottom: 18px;
    border-bottom: 1px solid var(--gptlms-border);
}

.gptlms-quiz-question label {
    display: block;
    margin-bottom: 8px;
}

.gptlms-course-hero {
    display: grid;
    grid-template-columns: minmax(0, 1.08fr) minmax(380px, 0.92fr);
    gap: 32px;
    align-items: center;
    padding: 38px;
    border-radius: var(--gptlms-radius-lg);
    background:
        radial-gradient(circle at top right, rgba(255, 255, 255, 0.18), transparent 24%),
        linear-gradient(135deg, rgba(23, 37, 84, 0.98), rgba(29, 78, 216, 0.92) 52%, rgba(15, 118, 110, 0.86) 100%),
        linear-gradient(180deg, #1e3a8a 0%, #0f172a 100%);
    color: #fff;
    box-shadow: var(--gptlms-shadow-lg);
    overflow: hidden;
    position: relative;
}

.gptlms-course-hero::before,
.gptlms-course-hero::after {
    content: '';
    position: absolute;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.08);
    pointer-events: none;
}

.gptlms-course-hero::before {
    width: 280px;
    height: 280px;
    top: -110px;
    right: -80px;
}

.gptlms-course-hero::after {
    width: 200px;
    height: 200px;
    bottom: -120px;
    left: 42%;
}

.gptlms-course-hero-copy,
.gptlms-course-hero-media {
    position: relative;
    z-index: 1;
}

.gptlms-course-kicker,
.gptlms-section-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 14px;
    padding: 7px 14px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.12);
    color: rgba(255, 255, 255, 0.96);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.gptlms-content-card .gptlms-section-eyebrow,
.gptlms-sidebar-card .gptlms-section-eyebrow,
.gptlms-sidebar-panel .gptlms-section-eyebrow {
    background: rgba(37, 99, 235, 0.1);
    color: var(--gptlms-primary);
}

.gptlms-course-title {
    margin: 0 0 14px;
    color: #fff;
    font-size: clamp(2rem, 3vw, 3.5rem);
    line-height: 1.02;
    letter-spacing: -0.04em;
}

.gptlms-course-summary {
    max-width: 60ch;
    margin: 0;
    color: rgba(255, 255, 255, 0.82);
    font-size: 17px;
    line-height: 1.7;
}

.gptlms-course-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 24px;
}

.gptlms-chip {
    display: inline-flex;
    align-items: center;
    min-height: 40px;
    padding: 0 16px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    backdrop-filter: blur(12px);
}

.gptlms-chip-accent {
    background: linear-gradient(135deg, #f59e0b, #f97316);
    color: #fff;
}

.gptlms-hero-benefits {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
    margin-top: 24px;
}

.gptlms-hero-benefit {
    padding: 16px;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.1);
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(14px);
}

.gptlms-hero-benefit strong {
    display: block;
    color: #fff;
    font-size: 1.15rem;
    font-weight: 800;
}

.gptlms-hero-benefit span {
    display: block;
    margin-top: 5px;
    color: rgba(255, 255, 255, 0.72);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.gptlms-course-author-line {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-top: 28px;
}

.gptlms-course-author-avatar {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, #fff, #dbeafe);
    color: var(--gptlms-primary-deep);
    font-size: 20px;
    font-weight: 800;
    box-shadow: 0 10px 24px rgba(2, 6, 23, 0.16);
}

.gptlms-course-author-label {
    color: var(--gptlms-muted);
    font-size: 13px;
}

.gptlms-course-hero .gptlms-course-author-label,
.gptlms-course-hero .gptlms-course-author-name {
    color: rgba(255, 255, 255, 0.88);
}

.gptlms-course-author-name {
    color: var(--gptlms-text);
    font-size: 16px;
    font-weight: 700;
}

.gptlms-hero-actions {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-top: 26px;
    flex-wrap: wrap;
}

.gptlms-ghost-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 54px;
    padding: 0 20px;
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    font-weight: 700;
    text-decoration: none;
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.14);
    transition: background 0.2s ease, transform 0.2s ease;
}

.gptlms-ghost-link:hover {
    background: rgba(255, 255, 255, 0.16);
    transform: translateY(-1px);
}

.gptlms-course-media-frame {
    padding: 14px;
    border-radius: 28px;
    background: rgba(255, 255, 255, 0.1);
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.14);
    backdrop-filter: blur(14px);
}

.gptlms-course-cover,
.gptlms-course-cover-placeholder {
    display: block;
    width: 100%;
    aspect-ratio: 16 / 10;
    border-radius: 22px;
}

.gptlms-course-cover {
    object-fit: cover;
}

.gptlms-course-cover-placeholder {
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0.08));
    color: #fff;
    font-size: 20px;
    font-weight: 700;
}

.gptlms-proof-strip {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
    margin-top: 22px;
}

.gptlms-proof-card {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(248, 251, 255, 0.98));
}

.gptlms-proof-label {
    display: inline-flex;
    margin-bottom: 10px;
    color: var(--gptlms-primary);
    font-size: 12px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.gptlms-proof-card strong {
    display: block;
    color: var(--gptlms-text);
    font-size: 1.05rem;
}

.gptlms-proof-card p {
    margin: 10px 0 0;
    color: var(--gptlms-muted);
    line-height: 1.7;
}

.gptlms-course-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 360px;
    gap: 30px;
    margin-top: 34px;
    align-items: start;
}

.gptlms-course-main {
    display: grid;
    gap: 24px;
}

.gptlms-course-stats-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
}

.gptlms-stat-card {
    background: linear-gradient(180deg, #fff 0%, var(--gptlms-surface-soft) 100%);
}

.gptlms-stat-value {
    display: block;
    color: var(--gptlms-primary-deep);
    font-size: clamp(1.4rem, 2vw, 2rem);
    font-weight: 800;
    line-height: 1.1;
}

.gptlms-stat-label {
    display: block;
    margin-top: 8px;
    color: var(--gptlms-muted);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.gptlms-content-card {
    padding: 28px;
    background: linear-gradient(180deg, #fff 0%, var(--gptlms-surface-soft) 100%);
}

.gptlms-section-heading {
    margin-bottom: 18px;
}

.gptlms-section-heading h2,
.gptlms-sidebar-card h3,
.gptlms-sidebar-panel h3 {
    margin: 0;
    color: var(--gptlms-text);
    font-size: clamp(1.3rem, 2vw, 1.9rem);
    line-height: 1.2;
}

.gptlms-rich-content {
    color: var(--gptlms-text);
    font-size: 16px;
    line-height: 1.75;
}

.gptlms-rich-content > *:first-child {
    margin-top: 0;
}

.gptlms-rich-content > *:last-child {
    margin-bottom: 0;
}

.gptlms-bullet-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.gptlms-bullet-card {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 16px 18px;
    border-radius: 18px;
    background: #fff;
    border: 1px solid rgba(199, 214, 234, 0.8);
}

.gptlms-bullet-icon {
    flex: 0 0 auto;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, #22c55e, #16a34a);
    color: #fff;
    font-size: 18px;
    font-weight: 700;
    line-height: 1;
}

.gptlms-curriculum-stack {
    display: grid;
    gap: 18px;
}

.gptlms-curriculum-card {
    padding: 22px;
    background: #fff;
}

.gptlms-topic-header {
    display: flex;
    justify-content: space-between;
    gap: 18px;
    align-items: flex-start;
}

.gptlms-topic-header h3 {
    margin: 8px 0 0;
    color: var(--gptlms-text);
    font-size: 1.2rem;
}

.gptlms-topic-index {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 999px;
    background: var(--gptlms-primary-soft);
    color: var(--gptlms-primary);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.08em;
}

.gptlms-topic-count {
    white-space: nowrap;
    padding: 8px 12px;
    border-radius: 999px;
    background: var(--gptlms-surface-tint);
    color: var(--gptlms-primary-deep);
    font-size: 13px;
    font-weight: 700;
}

.gptlms-topic-summary {
    margin: 14px 0 0;
    color: var(--gptlms-muted);
    line-height: 1.7;
}

.gptlms-topic-items {
    margin-top: 18px;
    display: grid;
    gap: 12px;
}

.gptlms-topic-items li {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 16px;
    border-radius: 16px;
    background: var(--gptlms-surface-soft);
    border: 1px solid rgba(199, 214, 234, 0.65);
}

.gptlms-topic-item-type {
    flex: 0 0 auto;
    min-width: 78px;
    padding: 8px 12px;
    border-radius: 999px;
    background: #fff;
    color: var(--gptlms-primary);
    font-size: 12px;
    font-weight: 800;
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.gptlms-topic-item-title {
    color: var(--gptlms-text);
    font-weight: 600;
}

.gptlms-course-sidebar {
    display: grid;
    gap: 20px;
    position: sticky;
    top: 24px;
}

.gptlms-sidebar-panel,
.gptlms-sidebar-card {
    padding: 24px;
}

.gptlms-sidebar-panel-primary {
    background: linear-gradient(180deg, #ffffff 0%, #eef5ff 100%);
    border: 1px solid rgba(96, 165, 250, 0.28);
}

.gptlms-sidebar-price {
    display: inline-flex;
    margin-bottom: 14px;
    padding: 8px 14px;
    border-radius: 999px;
    background: rgba(34, 197, 94, 0.12);
    color: #15803d;
    font-size: 13px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.gptlms-sidebar-progress-top {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    align-items: center;
    color: var(--gptlms-text);
    font-weight: 700;
}

.gptlms-sidebar-note {
    margin-top: 14px;
    color: var(--gptlms-muted);
    line-height: 1.7;
    font-size: 14px;
}

.gptlms-sidebar-trust {
    display: grid;
    gap: 10px;
    margin-top: 16px;
}

.gptlms-sidebar-trust li {
    position: relative;
    padding-left: 18px;
    color: var(--gptlms-text);
    font-size: 14px;
    line-height: 1.6;
}

.gptlms-sidebar-trust li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 9px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: linear-gradient(135deg, #1d4ed8, #0f766e);
}

.gptlms-shell .button-hero,
.gptlms-shell .gptlms-enroll-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 54px;
    border: 0;
    border-radius: 16px;
    padding: 0 20px;
    background: linear-gradient(135deg, var(--gptlms-primary), #2563eb 58%, #0f766e);
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    text-decoration: none;
    box-shadow: 0 18px 35px rgba(29, 78, 216, 0.22);
    transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
}

.gptlms-shell .button-hero:hover,
.gptlms-shell .gptlms-enroll-button:hover {
    transform: translateY(-1px);
    box-shadow: 0 22px 40px rgba(29, 78, 216, 0.28);
    opacity: 0.96;
}

.gptlms-instructor-card .gptlms-course-author-line {
    margin-top: 8px;
}

.gptlms-sidebar-list {
    display: grid;
    gap: 12px;
}

.gptlms-sidebar-list li {
    display: flex;
    justify-content: space-between;
    gap: 18px;
    color: var(--gptlms-muted);
}

.gptlms-sidebar-list li strong {
    color: var(--gptlms-text);
    font-weight: 700;
    text-align: right;
}

.gptlms-sidebar-list-bullets li {
    position: relative;
    display: block;
    padding-left: 18px;
}

.gptlms-sidebar-list-bullets li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 11px;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--gptlms-primary);
}

@media (max-width: 1120px) {
    .gptlms-course-hero,
    .gptlms-course-layout,
    .gptlms-course-stats-grid,
    .gptlms-bullet-grid,
    .gptlms-proof-strip,
    .gptlms-hero-benefits {
        grid-template-columns: 1fr;
    }

    .gptlms-course-sidebar {
        position: static;
    }
}

@media (max-width: 960px) {
    .gptlms-courses-grid,
    .gptlms-dashboard-grid,
    .gptlms-player,
    .gptlms-single-hero {
        grid-template-columns: 1fr;
        flex-direction: column;
    }

    .gptlms-course-hero {
        padding: 26px;
    }

    .gptlms-content-card,
    .gptlms-sidebar-card,
    .gptlms-sidebar-panel,
    .gptlms-curriculum-card {
        padding: 20px;
    }

    .gptlms-video-wrap iframe,
    .gptlms-video-wrap video,
    .gptlms-youtube-embed,
    .gptlms-vimeo-embed,
    .gptlms-html5-video {
        min-height: 240px;
    }
}

@media (max-width: 640px) {
    .gptlms-shell {
        width: min(100% - 20px, 1240px);
    }

    .gptlms-single-course {
        padding-top: 20px;
    }

    .gptlms-course-title {
        font-size: 2rem;
    }

    .gptlms-course-hero,
    .gptlms-content-card,
    .gptlms-sidebar-card,
    .gptlms-sidebar-panel,
    .gptlms-curriculum-card,
    .gptlms-proof-card {
        border-radius: 22px;
    }

    .gptlms-topic-header,
    .gptlms-sidebar-list li,
    .gptlms-hero-actions {
        flex-direction: column;
        align-items: flex-start;
    }

    .gptlms-topic-items li {
        flex-direction: column;
        align-items: flex-start;
    }

    .gptlms-topic-item-type,
    .gptlms-shell .button-hero,
    .gptlms-shell .gptlms-enroll-button,
    .gptlms-ghost-link {
        min-width: 0;
        width: 100%;
    }
}

.gptlms-lesson-resources {
    display: grid;
    gap: 18px;
    margin: 26px 0;
}

.gptlms-resource-section h2 {
    margin: 0 0 12px;
    color: var(--gptlms-text);
    font-size: 1.1rem;
}

.gptlms-resource-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.gptlms-resource-card {
    display: block;
    padding: 18px;
    border-radius: 18px;
    background: linear-gradient(180deg, #ffffff 0%, var(--gptlms-surface-soft) 100%);
    border: 1px solid rgba(199, 214, 234, 0.85);
    box-shadow: var(--gptlms-shadow-sm);
    text-decoration: none;
}

.gptlms-resource-card strong,
.gptlms-resource-link,
.gptlms-resource-tag {
    display: block;
}

.gptlms-resource-tag {
    margin-bottom: 10px;
    color: var(--gptlms-primary);
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.gptlms-resource-card strong {
    color: var(--gptlms-text);
    font-size: 1rem;
    line-height: 1.5;
}

.gptlms-resource-link {
    margin-top: 12px;
    color: var(--gptlms-muted);
    font-size: 13px;
    font-weight: 600;
}

@media (max-width: 640px) {
    .gptlms-resource-grid {
        grid-template-columns: 1fr;
    }
}