:root {
    color-scheme: light;
    --bg: #fffafa;
    --surface: #ffffff;
    --surface-tint: #fbf0f3;
    --line: #ead6dd;
    --text: #424044;
    --muted: #777174;
    --accent: #a31449;
    --accent-strong: #82103b;
    --accent-soft: #f7e3eb;
    --om: #91412f;
    --om-soft: #d1b0a8;
    --green: #afc112;
    --green-strong: #82920d;
    --danger: #9b2f2f;
    --warning: #91412f;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background:
        linear-gradient(180deg, #fffafa 0%, #fff6f8 42%, #ffffff 100%);
    color: var(--text);
    font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.5;
}

a {
    color: inherit;
}

.topbar {
    align-items: center;
    background: rgba(255, 250, 250, 0.94);
    border-bottom: 1px solid var(--line);
    display: flex;
    justify-content: space-between;
    min-height: 64px;
    padding: 0 28px;
    position: sticky;
    top: 0;
}

.brand {
    align-items: center;
    display: inline-flex;
    gap: 10px;
    font-weight: 750;
    text-decoration: none;
}

.brand-symbol {
    align-items: center;
    background: #fff;
    border: 1px solid var(--om-soft);
    border-radius: 50%;
    color: var(--om);
    display: inline-flex;
    font-family: Georgia, "Times New Roman", serif;
    font-size: 1.08rem;
    font-weight: 800;
    height: 34px;
    justify-content: center;
    line-height: 1;
    position: relative;
    width: 34px;
}

.brand-symbol::after {
    border: 1px solid rgba(176, 118, 105, 0.46);
    border-radius: 50%;
    content: "";
    inset: 4px;
    position: absolute;
}

.topnav {
    align-items: center;
    display: flex;
    gap: 16px;
}

.topnav a {
    color: var(--muted);
    font-size: 0.94rem;
    text-decoration: none;
}

.account {
    color: var(--muted);
    font-size: 0.9rem;
}

.shell {
    margin: 0 auto;
    max-width: 1180px;
    padding: 48px 28px 72px;
}

.site-footer {
    border-top: 1px solid var(--line);
    color: var(--muted);
    margin: 0 auto;
    max-width: 1180px;
    padding: 24px 28px 36px;
}

.site-footer nav {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
}

.site-footer a {
    color: inherit;
    font-size: 0.92rem;
    text-decoration: none;
}

.site-footer a:hover {
    color: var(--accent-strong);
}

.auth-panel {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 8px;
    margin: 34px auto 0;
    max-width: 460px;
    padding: 30px;
}

.eyebrow {
    color: var(--accent);
    font-size: 0.78rem;
    font-weight: 760;
    letter-spacing: 0;
    margin: 0 0 8px;
    text-transform: uppercase;
}

h1 {
    font-size: clamp(2rem, 4vw, 3rem);
    letter-spacing: 0;
    line-height: 1.05;
    margin: 0;
}

h2 {
    font-size: 1.25rem;
    letter-spacing: 0;
}

.muted,
.form-note,
.course-row small {
    color: var(--muted);
}

.form {
    display: grid;
    gap: 18px;
    margin-top: 26px;
}

.form label {
    display: grid;
    gap: 7px;
}

.form label span {
    color: var(--text);
    font-size: 0.92rem;
    font-weight: 650;
}

input,
select,
textarea {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 6px;
    color: var(--text);
    font: inherit;
    min-height: 44px;
    padding: 10px 12px;
}

textarea {
    resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
    border-color: var(--accent);
    outline: 2px solid rgba(163, 20, 73, 0.16);
}

code {
    background: var(--accent-soft);
    border-radius: 4px;
    font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
    font-size: 0.9em;
    padding: 2px 4px;
}

.button {
    background: var(--accent);
    border: 1px solid var(--accent);
    border-radius: 6px;
    color: #fff;
    cursor: pointer;
    font: inherit;
    font-weight: 720;
    min-height: 42px;
    padding: 10px 15px;
    transition: transform 160ms ease, background 160ms ease;
}

.button:hover {
    background: var(--accent-strong);
}

.button:active {
    transform: translateY(1px);
}

.button-secondary {
    background: transparent;
    color: var(--text);
}

.button-secondary:hover {
    background: var(--accent-soft);
}

.button-danger {
    background: var(--danger);
    border-color: var(--danger);
}

.button-danger:hover {
    background: #782424;
    border-color: #782424;
}

.button-small {
    font-size: 0.88rem;
    min-height: 36px;
    padding: 7px 10px;
}

.notice {
    border: 1px solid var(--line);
    border-radius: 6px;
    margin-top: 18px;
    padding: 12px 14px;
}

.notice-error {
    border-color: rgba(155, 47, 47, 0.35);
    color: var(--danger);
}

.notice-success {
    border-color: rgba(175, 193, 18, 0.5);
    color: var(--green-strong);
}

.notice-warning {
    border-color: rgba(145, 65, 47, 0.36);
    color: var(--warning);
}

.page-heading,
.course-header {
    align-items: end;
    display: flex;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 32px;
}

.admin-heading {
    margin-bottom: 24px;
}

.admin-grid {
    display: grid;
    gap: 22px;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
}

.admin-panel {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 24px;
}

.admin-panel-wide {
    margin-top: 22px;
}

.section-title {
    display: grid;
    gap: 6px;
}

.section-title h2,
.csv-help h3 {
    margin: 0;
}

.section-title p,
.csv-help p {
    margin: 0;
}

.checkbox-fieldset {
    border: 1px solid var(--line);
    border-radius: 8px;
    margin: 0;
    padding: 14px;
}

.checkbox-fieldset legend {
    color: var(--text);
    font-size: 0.92rem;
    font-weight: 650;
    padding: 0 6px;
}

.checkbox-list {
    display: grid;
    gap: 10px;
    max-height: 320px;
    overflow: auto;
    padding-right: 4px;
}

.admin-form-grid,
.course-edit-form {
    align-items: end;
    display: grid;
    gap: 16px;
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.admin-field-wide {
    grid-column: 1 / -1;
}

.admin-actions {
    display: flex;
    justify-content: flex-start;
}

.backup-actions {
    align-items: center;
    border-top: 1px solid var(--line);
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    justify-content: space-between;
    margin-top: 18px;
    padding-top: 16px;
}

.backup-warning {
    color: var(--warning);
    font-size: 0.92rem;
    margin: 0;
    max-width: 720px;
}

.course-edit-list {
    display: grid;
    gap: 14px;
    margin-top: 20px;
}

.course-edit-item {
    border: 1px solid var(--line);
    border-radius: 8px;
    display: grid;
    gap: 14px;
    padding: 16px;
}

.course-edit-meta {
    color: var(--muted);
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 0.9rem;
}

.course-delete-box {
    border-top: 1px solid var(--line);
    padding-top: 12px;
}

.course-delete-box summary {
    color: var(--danger);
    cursor: pointer;
    font-weight: 720;
}

.course-delete-warning {
    color: var(--muted);
    font-size: 0.9rem;
    margin: 10px 0 12px;
}

.course-delete-form {
    align-items: end;
    display: grid;
    gap: 12px;
    grid-template-columns: minmax(220px, 1fr) auto;
    max-width: 720px;
}

.course-delete-form label {
    display: grid;
    gap: 7px;
}

.course-delete-form label span {
    color: var(--text);
    font-size: 0.9rem;
    font-weight: 650;
}

.checkbox-row {
    align-items: start;
    display: grid;
    gap: 10px;
    grid-template-columns: 18px 1fr;
}

.checkbox-row input[type="checkbox"] {
    height: 18px;
    margin: 3px 0 0;
    min-height: 0;
    padding: 0;
    width: 18px;
}

.checkbox-row span {
    display: grid;
    gap: 2px;
}

.checkbox-row small {
    color: var(--muted);
    overflow-wrap: anywhere;
}

.csv-help {
    border-top: 1px solid var(--line);
    display: grid;
    gap: 14px;
    margin-top: 24px;
    padding-top: 20px;
}

.csv-example {
    background: #332c2f;
    border-radius: 8px;
    color: #fffafa;
    margin: 0;
    overflow-x: auto;
    padding: 14px;
}

.csv-example code {
    background: transparent;
    color: inherit;
    padding: 0;
}

.admin-table-wrap {
    overflow-x: auto;
}

.admin-table {
    border-collapse: collapse;
    min-width: 720px;
    width: 100%;
}

.admin-table th,
.admin-table td {
    border-bottom: 1px solid var(--line);
    padding: 12px 10px;
    text-align: left;
    vertical-align: top;
}

.admin-table th {
    color: var(--accent-strong);
    font-size: 0.78rem;
    text-transform: uppercase;
}

.admin-table td {
    color: var(--text);
}

.admin-table tr:last-child td {
    border-bottom: 0;
}

.admin-table-compact {
    min-width: 520px;
}

.notice-list {
    margin: 0;
    padding-left: 18px;
}

.notice-list li + li {
    margin-top: 4px;
}

.course-list,
.lesson-list {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 8px;
    overflow: hidden;
}

.course-row,
.lesson-row {
    align-items: center;
    border-bottom: 1px solid var(--line);
    display: grid;
    gap: 18px;
    padding: 18px 20px;
    text-decoration: none;
}

.course-row {
    grid-template-columns: 1fr auto;
}

.course-row:last-child,
.lesson-row:last-child {
    border-bottom: 0;
}

.lesson-row {
    grid-template-columns: 42px 1fr auto;
}

.module-divider {
    background: var(--accent-soft);
    border-bottom: 1px solid var(--line);
    color: var(--accent-strong);
    font-size: 0.82rem;
    font-weight: 780;
    padding: 12px 20px;
    text-transform: uppercase;
}

.lesson-index {
    align-items: center;
    background: var(--accent-soft);
    color: var(--accent-strong);
    border-radius: 50%;
    display: inline-flex;
    font-weight: 750;
    height: 34px;
    justify-content: center;
    width: 34px;
}

.lesson-state,
.row-action {
    color: var(--muted);
    font-size: 0.9rem;
}

.progress-card {
    min-width: 220px;
}

.course-actions {
    align-items: center;
    display: flex;
    gap: 18px;
}

.progress-card span {
    display: block;
    font-weight: 760;
    margin-bottom: 8px;
    text-align: right;
}

.progress-bar {
    appearance: none;
    background: #f0dde3;
    border: 0;
    border-radius: 999px;
    height: 10px;
    overflow: hidden;
    width: 100%;
}

.progress-bar::-webkit-progress-bar {
    background: #f0dde3;
    border-radius: 999px;
}

.progress-bar::-webkit-progress-value {
    background: var(--accent);
    border-radius: 999px;
}

.progress-bar::-moz-progress-bar {
    background: var(--accent);
    border-radius: 999px;
}

.empty-state {
    border: 1px dashed var(--line);
    border-radius: 8px;
    padding: 32px;
    position: relative;
}

.empty-state::before {
    color: var(--om-soft);
    content: "ॐ";
    font-family: Georgia, "Times New Roman", serif;
    font-size: 2rem;
    line-height: 1;
    position: absolute;
    right: 24px;
    top: 24px;
}

.lesson-layout {
    display: grid;
    gap: 34px;
    grid-template-columns: 300px minmax(0, 1fr);
}

.lesson-sidebar {
    align-self: start;
    position: sticky;
    top: 92px;
}

.lesson-menu-toggle {
    display: none;
}

.back-link {
    color: var(--muted);
    display: inline-block;
    margin-bottom: 18px;
    text-decoration: none;
}

.lesson-nav {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 8px;
    display: grid;
    overflow: hidden;
}

.lesson-nav a {
    align-items: center;
    border-bottom: 1px solid var(--line);
    display: grid;
    gap: 10px;
    grid-template-columns: 28px minmax(0, 1fr) 24px;
    padding: 13px 14px;
    text-decoration: none;
}

.lesson-nav a:last-child {
    border-bottom: 0;
}

.lesson-nav-module {
    align-items: center;
    background: var(--accent-soft);
    border-bottom: 1px solid var(--line);
    color: var(--accent-strong);
    cursor: pointer;
    display: flex;
    font-size: 0.76rem;
    font-weight: 780;
    justify-content: space-between;
    list-style: none;
    padding: 10px 14px;
    text-transform: uppercase;
}

.lesson-nav-module::-webkit-details-marker {
    display: none;
}

.lesson-nav-module::after {
    border-color: currentColor;
    border-style: solid;
    border-width: 0 1.5px 1.5px 0;
    content: "";
    height: 7px;
    margin-left: 10px;
    transform: rotate(45deg);
    transition: transform 160ms ease;
    width: 7px;
}

.lesson-module-group[open] .lesson-nav-module::after {
    transform: rotate(-135deg);
}

.lesson-nav-module small {
    color: var(--muted);
    font-size: 0.72rem;
    margin-left: auto;
}

.lesson-module-group:last-child .lesson-nav-module {
    border-bottom: 0;
}

.lesson-module-group[open]:last-child .lesson-nav-module {
    border-bottom: 1px solid var(--line);
}

.lesson-module-lessons {
    display: grid;
}

.lesson-nav a.active {
    background: var(--accent-soft);
    color: var(--accent-strong);
    font-weight: 700;
}

.lesson-nav a.completed:not(.active) {
    color: var(--accent-strong);
}

.lesson-nav-title {
    min-width: 0;
}

.lesson-nav-status {
    align-items: center;
    background: var(--green);
    border-radius: 50%;
    color: #fff;
    display: inline-flex;
    font-size: 0.86rem;
    font-weight: 760;
    height: 22px;
    justify-content: center;
    line-height: 1;
    width: 22px;
}

.lesson-nav-status.empty {
    background: transparent;
}

.lesson-content {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 32px;
}

.content-body {
    margin-top: 26px;
}

.content-body img,
.content-body video,
.content-body iframe {
    max-width: 100%;
}

.video-frame {
    aspect-ratio: 16 / 9;
    background: #332c2f;
    border-radius: 8px;
    display: grid;
    margin-top: 24px;
    overflow: hidden;
    place-items: center;
}

.video-frame iframe {
    border: 0;
    height: 100%;
    width: 100%;
}

.video-frame a {
    color: #fff;
}

.lesson-pager {
    display: flex;
    gap: 12px;
    justify-content: space-between;
    margin-top: 22px;
}

.resources {
    border-top: 1px solid var(--line);
    display: grid;
    gap: 10px;
    margin-top: 30px;
    padding-top: 24px;
}

.resources a {
    align-items: center;
    border: 1px solid var(--line);
    border-radius: 6px;
    display: flex;
    gap: 16px;
    justify-content: space-between;
    padding: 12px 14px;
    text-decoration: none;
}

.resource-group {
    display: grid;
    gap: 8px;
}

.resource-group h3 {
    color: var(--om);
    font-size: 0.82rem;
    letter-spacing: 0;
    margin: 8px 0 0;
    text-transform: uppercase;
}

.resources strong,
.resources small {
    display: block;
}

.resources small,
.resource-action {
    color: var(--muted);
}

.resource-action {
    font-size: 0.88rem;
    white-space: nowrap;
}

.lesson-embeds {
    display: grid;
    gap: 18px;
    margin-top: 28px;
}

.lesson-embeds figure {
    margin: 0;
}

.lesson-embeds img {
    border: 1px solid var(--line);
    border-radius: 8px;
    display: block;
    height: auto;
    max-width: 100%;
}

.complete-form {
    margin-top: 28px;
}

.legal-page {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 32px;
}

.legal-copy {
    color: var(--text);
    font-size: 0.98rem;
    line-height: 1.72;
    margin-top: 28px;
    overflow-wrap: anywhere;
}

@media (max-width: 780px) {
    .topbar,
    .page-heading,
    .course-header {
        align-items: flex-start;
        flex-direction: column;
    }

    .topbar {
        padding: 16px;
    }

    .topnav {
        align-items: flex-start;
        flex-wrap: wrap;
    }

    .lesson-page .topbar {
        align-items: center;
        flex-direction: row;
        gap: 10px;
        min-height: 48px;
        padding: 8px 12px;
        position: static;
    }

    .lesson-page .brand {
        flex: 0 1 auto;
        font-size: 0.95rem;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .lesson-page .topnav {
        align-items: center;
        flex: 1 1 auto;
        flex-wrap: nowrap;
        gap: 8px;
        justify-content: flex-end;
        min-width: 0;
    }

    .lesson-page .account {
        font-size: 0.82rem;
        max-width: min(34vw, 170px);
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .lesson-page .topnav .button {
        font-size: 0.86rem;
        min-height: 36px;
        padding: 8px 10px;
    }

    .shell {
        padding: 28px 16px 48px;
    }

    .admin-grid {
        grid-template-columns: 1fr;
    }

    .admin-panel {
        padding: 20px;
    }

    .admin-form-grid,
    .course-edit-form,
    .course-delete-form {
        grid-template-columns: 1fr;
    }

    .backup-actions {
        align-items: stretch;
        flex-direction: column;
    }

    .admin-table {
        min-width: 640px;
    }

    .lesson-page .shell {
        padding-top: 16px;
    }

    .site-footer {
        padding: 22px 16px 32px;
    }

    .lesson-row,
    .course-row {
        grid-template-columns: 1fr;
    }

    .course-actions {
        align-items: stretch;
        flex-direction: column;
        width: 100%;
    }

    .progress-card {
        min-width: 0;
        width: 100%;
    }

    .progress-card span {
        text-align: left;
    }

    .lesson-layout {
        gap: 18px;
        grid-template-columns: 1fr;
    }

    .lesson-sidebar {
        position: static;
    }

    .back-link {
        margin-bottom: 12px;
    }

    .lesson-menu-toggle {
        align-items: center;
        background: var(--surface);
        border: 1px solid var(--line);
        border-radius: 8px;
        color: var(--text);
        cursor: pointer;
        display: flex;
        gap: 12px;
        justify-content: flex-start;
        min-height: 54px;
        padding: 10px 14px;
        text-align: left;
        width: 100%;
    }

    .lesson-menu-toggle strong,
    .lesson-menu-toggle small {
        display: block;
    }

    .lesson-menu-toggle small {
        color: var(--muted);
        font-size: 0.8rem;
        margin-top: 1px;
    }

    .hamburger {
        align-items: center;
        border: 1px solid var(--line);
        border-radius: 6px;
        display: inline-flex;
        height: 32px;
        justify-content: center;
        width: 32px;
    }

    .hamburger,
    .hamburger::before,
    .hamburger::after,
    .hamburger span {
        transition: transform 160ms ease, opacity 160ms ease;
    }

    .hamburger::before,
    .hamburger::after,
    .hamburger span {
        background: var(--accent-strong);
        content: "";
        display: block;
        height: 2px;
        position: absolute;
        width: 15px;
    }

    .hamburger {
        position: relative;
    }

    .hamburger::before {
        transform: translateY(-5px);
    }

    .hamburger::after {
        transform: translateY(5px);
    }

    .lesson-sidebar.is-open .hamburger span {
        opacity: 0;
    }

    .lesson-sidebar.is-open .hamburger::before {
        transform: rotate(45deg);
    }

    .lesson-sidebar.is-open .hamburger::after {
        transform: rotate(-45deg);
    }

    .lesson-nav {
        margin-top: 10px;
        max-height: min(68dvh, 520px);
        overflow: auto;
    }

    .has-js .lesson-nav {
        display: none;
    }

    .has-js .lesson-sidebar.is-open .lesson-nav {
        display: grid;
    }

    .lesson-content {
        padding: 22px;
    }

    .lesson-page .lesson-content {
        padding: 18px 14px;
    }

    .lesson-pager {
        flex-direction: column;
    }

    .resources a {
        align-items: flex-start;
        flex-direction: column;
    }

    .legal-page {
        padding: 22px;
    }
}

@media (max-width: 430px) {
    .lesson-page .brand {
        max-width: 44vw;
    }

    .lesson-page .account {
        display: none;
    }
}