:root {
    --background: #0b1120;
    --surface: #111827;
    --surface-light: #1f2937;
    --text: #f8fafc;
    --muted: #94a3b8;
    --primary: #38bdf8;
    --primary-dark: #0284c7;
    --success: #34d399;
    --border: #263244;
    --max-width: 1680px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: var(--background);
    color: var(--text);
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.6;
}

a {
    color: inherit;
    text-decoration: none;
}

.container {
    width: min(calc(100% - 4rem), var(--max-width));
    margin-inline: auto;
}


/* =========================================================
   Site header and navigation
   ========================================================= */

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: #081120;
    border-bottom: 1px solid #182338;
}

.navbar {
    position: relative;
    min-height: 68px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.logo {
    display: inline-flex;
    align-items: center;
    min-width: 0;
    color: var(--text);
    text-decoration: none;
}

.logo-copy {
    display: flex;
    flex-direction: column;
    line-height: 1.05;
}

.logo-copy strong {
    color: #ffffff;
    font-size: 1.1rem;
    font-weight: 750;
    letter-spacing: -0.025em;
}

.logo-copy small {
    margin-top: 0.25rem;
    color: #9aa7ba;
    font-size: 0.67rem;
    font-weight: 400;
    letter-spacing: 0;
}

.logo:hover .logo-copy strong {
    color: #ffffff;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.nav-links > a,
.nav-button {
    min-height: 38px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 0.72rem;
    color: #b4bdcc;
    background: transparent;
    border: 0;
    border-radius: 0.35rem;
    cursor: pointer;
    font: inherit;
    font-size: 0.82rem;
    font-weight: 700;
    transition:
        color 0.15s ease,
        background-color 0.15s ease;
}

.nav-links > a:hover,
.nav-links > a:focus-visible,
.nav-button:hover,
.nav-button:focus-visible {
    color: #ffffff;
    background: #111c2f;
    outline: none;
}

.nav-signup {
    margin-left: 0.25rem;
    padding-inline: 0.95rem !important;
    background: var(--primary) !important;
    color: #082f49 !important;
    font-weight: 800 !important;
}

.nav-signup:hover {
    background: #7dd3fc !important;
    color: #082f49 !important;
}

.logout-form {
    margin: 0;
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-left: 0.4rem;
    padding: 0.2rem 0.8rem 0.2rem 0.9rem;
    border-left: 1px solid #1d2940;
}

.nav-user-avatar {
    display: grid;
    flex: 0 0 30px;
    width: 30px;
    height: 30px;
    place-items: center;
    background: #1d4ed8;
    color: #ffffff;
    border: 0;
    border-radius: 50%;
    font-size: 0.72rem;
    font-weight: 800;
}

.nav-user-details {
    display: grid;
    max-width: 210px;
    line-height: 1.2;
}

.nav-user-details strong {
    overflow: hidden;
    color: #ffffff;
    font-size: 0.73rem;
    font-weight: 650;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.nav-user-chevron {
    width: 15px;
    height: 15px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #8b97aa;
}

.nav-user-chevron svg {
    width: 13px;
    height: 13px;
    display: block;
}

.mobile-nav-toggle {
    display: none;
    width: 40px;
    height: 40px;
    padding: 9px;
    background: transparent;
    border: 1px solid #263244;
    border-radius: 0.45rem;
    cursor: pointer;
}

.mobile-nav-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    margin: 4px 0;
    background: #ffffff;
    border-radius: 999px;
}

@media (max-width: 900px) {
    .navbar {
        min-height: 64px;
    }

    .mobile-nav-toggle {
        display: block;
    }

    .nav-links {
        position: absolute;
        top: calc(100% + 1px);
        right: 0;
        left: 0;
        display: none;
        align-items: stretch;
        flex-direction: column;
        gap: 0.25rem;
        padding: 0.8rem;
        background: #0b1424;
        border: 1px solid #263244;
        border-top: 0;
        border-radius: 0 0 0.65rem 0.65rem;
        box-shadow: 0 18px 40px rgb(0 0 0 / 35%);
    }

    .nav-links.is-open {
        display: flex;
    }

    .nav-links > a,
    .nav-button {
        width: 100%;
        justify-content: flex-start;
        padding: 0.7rem 0.75rem;
    }

    .nav-signup {
        justify-content: center !important;
        margin: 0.25rem 0 0;
    }

    .logout-form {
        width: 100%;
    }

    .nav-user {
        width: 100%;
        margin: 0.35rem 0;
        padding: 0.75rem;
        border: 1px solid #263244;
        border-radius: 0.5rem;
    }

    .nav-user-details {
        max-width: calc(100% - 70px);
    }
}

@media (max-width: 500px) {
    .logo-copy small {
        display: none;
    }
}

.hero {
    padding: 8rem 0 7rem;
    background:
        radial-gradient(circle at top right, #075985 0, transparent 35%),
        var(--background);
}

.hero-content {
    max-width: var(--max-width);
}

.eyebrow {
    color: var(--primary);
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.hero h1 {
    max-width: 850px;
    margin: 0.75rem 0 1.25rem;
    font-size: clamp(2.5rem, 6vw, 4.75rem);
    line-height: 1.05;
}

.hero-description {
    max-width: 650px;
    color: var(--muted);
    font-size: 1.2rem;
}

.button {
    display: inline-block;
    margin-top: 1.25rem;
    padding: 0.85rem 1.25rem;
    background: var(--primary);
    color: #082f49;
    border-radius: 0.5rem;
    font-weight: 700;
}

.button:hover {
    background: #7dd3fc;
}

.paths-section {
    padding: 6rem 0;
}

.section-heading {
    margin-bottom: 2rem;
}

.section-heading h2 {
    margin: 0;
    font-size: 2.25rem;
}

.path-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.path-card {
    min-height: 300px;
    padding: 1.5rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.path-card:hover {
    border-color: var(--primary-dark);
    transform: translateY(-3px);
    transition: 0.2s ease;
}

.path-card h3 {
    margin-bottom: 0.5rem;
    font-size: 1.4rem;
}

.path-card p {
    color: var(--muted);
}

.status {
    display: inline-block;
    padding: 0.25rem 0.65rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 700;
}

.available {
    background: rgb(52 211 153 / 15%);
    color: var(--success);
}

.coming-soon {
    background: var(--surface-light);
    color: var(--muted);
}

.card-link {
    color: var(--primary);
    font-weight: 700;
}

.card-link.disabled {
    color: var(--muted);
}

.site-footer {
    padding: 2rem 0;
    color: var(--muted);
    border-top: 1px solid var(--border);
}

@media (max-width: 800px) {
    .path-grid {
        grid-template-columns: 1fr;
    }

    .hero {
        padding: 6rem 0 5rem;
    }
}

.course-count {
    margin-top: 1.5rem;
    color: var(--text) !important;
    font-size: 0.9rem;
    font-weight: 700;
}

.empty-state {
    padding: 3rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    text-align: center;
}

.empty-state h3 {
    margin-top: 0;
}

.empty-state p {
    color: var(--muted);
}

.path-hero {
    padding: 6rem 0 4rem;
    background:
        radial-gradient(circle at top right, #075985 0, transparent 35%),
        var(--background);
}

.path-hero h1 {
    margin: 0.75rem 0 1rem;
    font-size: clamp(2.5rem, 5vw, 4rem);
}

.path-hero p {
    max-width: 700px;
    color: var(--muted);
    font-size: 1.1rem;
}

.back-link {
    display: inline-block;
    margin-bottom: 2rem;
    color: var(--muted);
}

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

.courses-section {
    padding: 5rem 0;
}

.course-list {
    display: grid;
    gap: 1rem;
}

.course-card {
    padding: 1.5rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    display: grid;
    grid-template-columns: 60px 1fr auto;
    align-items: center;
    gap: 1.5rem;
}

.course-card:hover {
    border-color: var(--primary-dark);
}

.course-number {
    color: var(--primary);
    font-size: 1.25rem;
    font-weight: 700;
}

.course-information h3 {
    margin: 0.5rem 0;
}

.course-information p {
    margin: 0;
    color: var(--muted);
}

.course-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    color: var(--muted);
    font-size: 0.8rem;
    text-transform: uppercase;
}

@media (max-width: 700px) {
    .course-card {
        grid-template-columns: 1fr;
    }

    .course-number {
        display: none;
    }
}



/* =========================================================
   Course detail page
   Supports both the original and updated template class names
   ========================================================= */

.course-detail-page {
    min-height: calc(100vh - 140px);
    padding: 2.5rem 0 6rem;
}

.course-breadcrumbs {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.55rem;
    margin-bottom: 2rem;
    color: var(--muted);
    font-size: 0.88rem;
}

.course-breadcrumbs a {
    transition: color 0.18s ease;
}

.course-breadcrumbs a:hover {
    color: var(--primary);
}

/* Outer hero section */
.course-detail-page > .course-hero,
.course-hero.course-page-hero {
    padding: 0;
    background: transparent;
}

.course-hero {
    padding: 4rem 0;
    background:
        radial-gradient(circle at top right, rgb(7 89 133 / 42%), transparent 42%),
        var(--background);
}

/* Inner two-column hero layout */
.course-heading,
.course-hero-inner {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(290px, 360px);
    align-items: start;
    gap: 3rem;
}

.course-heading > div,
.course-hero-copy {
    min-width: 0;
}

.course-heading h1,
.course-hero-copy h1 {
    max-width: 900px;
    margin: 0.65rem 0 1rem;
    font-size: clamp(2.5rem, 5vw, 4.25rem);
    line-height: 1.05;
    letter-spacing: -0.04em;
}

.course-description {
    max-width: 760px;
    margin: 0;
    color: var(--muted);
    font-size: 1.08rem;
    line-height: 1.75;
}

.course-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
    margin-top: 1.6rem;
    color: var(--muted);
    font-size: 0.8rem;
}

.course-meta span {
    display: inline-flex;
    align-items: center;
    min-height: 32px;
    padding: 0.35rem 0.72rem;
    color: #cbd5e1;
    background: rgb(255 255 255 / 4%);
    border: 1px solid var(--border);
    border-radius: 999px;
    font-size: 0.76rem;
    font-weight: 700;
    text-transform: none;
}

/* Summary / progress card */
.course-summary,
.course-progress-card {
    padding: 1.5rem;
    background: rgb(8 17 32 / 84%);
    border: 1px solid #2b3b51;
    border-radius: 0.9rem;
    box-shadow: 0 18px 44px rgb(0 0 0 / 22%);
}

.difficulty-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.3rem 0.7rem;
    color: var(--primary);
    background: rgb(56 189 248 / 14%);
    border: 1px solid rgb(56 189 248 / 22%);
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 800;
}

.course-summary dl {
    margin: 1.25rem 0 0;
}

.course-summary dl div {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.8rem 0;
    border-bottom: 1px solid var(--border);
}

.course-summary dl div:last-child {
    border-bottom: 0;
}

.course-summary dt {
    color: var(--muted);
}

.course-summary dd {
    margin: 0;
    font-weight: 750;
}

.course-progress-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0.8rem;
}

.course-progress-heading span {
    color: var(--muted);
    font-size: 0.86rem;
    font-weight: 700;
}

.course-progress-heading strong {
    color: var(--primary);
    font-size: 1.15rem;
}

.course-progress-card > p,
.course-summary > p {
    margin: 0.85rem 0 0;
    color: var(--muted);
    font-size: 0.9rem;
}

.progress-track {
    overflow: hidden;
    width: 100%;
    height: 10px;
    background: #1e293b;
    border: 1px solid #334155;
    border-radius: 999px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-dark), var(--primary));
    border-radius: inherit;
    transition: width 0.35s ease;
}

/* Curriculum */
.curriculum-section,
.course-content {
    padding: 4.5rem 0 0;
}

.course-content .section-heading,
.curriculum-section .section-heading {
    margin-bottom: 2rem;
}

.course-content .section-heading h2,
.curriculum-section .section-heading h2 {
    margin: 0;
    font-size: clamp(1.9rem, 4vw, 2.6rem);
}

.module-list,
.course-modules {
    display: grid;
    gap: 1.4rem;
}

.module-card,
.course-module {
    overflow: hidden;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 0.9rem;
    box-shadow: 0 14px 34px rgb(0 0 0 / 12%);
}

.module-header,
.module-heading {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 2rem;
    padding: 1.5rem;
    background: rgb(255 255 255 / 1.5%);
    border-bottom: 1px solid var(--border);
}

.module-position,
.module-number {
    display: inline-block;
    margin-bottom: 0.4rem;
    color: var(--primary);
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.module-header h3,
.module-heading h3 {
    margin: 0;
    font-size: 1.35rem;
}

.module-header p,
.module-heading p {
    max-width: 760px;
    margin: 0.5rem 0 0;
    color: var(--muted);
}

.module-total,
.module-lesson-count {
    flex-shrink: 0;
    padding: 0.35rem 0.7rem;
    color: var(--muted);
    background: #0b1424;
    border: 1px solid var(--border);
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 700;
}

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

.lesson-list .lesson-row,
.module-lessons .lesson-row {
    min-height: 76px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    padding: 1rem 1.35rem;
    border-bottom: 1px solid var(--border);
    transition: background-color 0.18s ease, padding-left 0.18s ease;
}

.lesson-list .lesson-row:last-child,
.module-lessons .lesson-row:last-child {
    border-bottom: 0;
}

.lesson-list .lesson-row:hover,
.module-lessons .lesson-row:hover {
    padding-left: 1.55rem;
    background: var(--surface-light);
}

.lesson-row-main,
.lesson-list .lesson-row > div:first-child {
    display: flex;
    align-items: center;
    min-width: 0;
    gap: 1rem;
}

.lesson-number {
    display: none;
}

.lesson-icon,
.lesson-type-icon {
    display: grid;
    flex: 0 0 42px;
    width: 42px;
    height: 42px;
    place-items: center;
    color: var(--primary);
    background: rgb(56 189 248 / 10%);
    border: 1px solid rgb(56 189 248 / 18%);
    border-radius: 0.65rem;
    font-family: monospace;
    font-size: 0.9rem;
    font-weight: 900;
}

.lesson-information,
.lesson-row-copy {
    display: grid;
    min-width: 0;
    gap: 0.15rem;
}

.lesson-information h4,
.lesson-title {
    overflow: hidden;
    margin: 0;
    color: var(--text);
    font-size: 1rem;
    font-weight: 750;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.lesson-information span,
.lesson-type-label {
    color: var(--muted);
    font-size: 0.78rem;
}

.lesson-duration,
.lesson-row-meta {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    gap: 0.8rem;
    color: var(--muted);
    font-size: 0.82rem;
}

.lesson-complete-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.28rem 0.62rem;
    color: var(--success);
    background: rgb(52 211 153 / 10%);
    border: 1px solid rgb(52 211 153 / 25%);
    border-radius: 999px;
    font-size: 0.72rem;
    font-weight: 800;
}

.module-empty {
    padding: 1.5rem;
    color: var(--muted);
}

@media (max-width: 1050px) {
    .course-heading,
    .course-hero-inner {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .course-summary,
    .course-progress-card {
        max-width: 560px;
    }
}

@media (max-width: 700px) {
    .course-detail-page {
        padding-top: 1.5rem;
    }

    .course-hero {
        padding: 2.5rem 0;
    }

    .course-heading h1,
    .course-hero-copy h1 {
        font-size: clamp(2.1rem, 10vw, 3rem);
    }

    .curriculum-section,
    .course-content {
        padding-top: 3rem;
    }

    .module-header,
    .module-heading {
        flex-direction: column;
        gap: 1rem;
    }

    .lesson-list .lesson-row,
    .module-lessons .lesson-row {
        align-items: flex-start;
        flex-direction: column;
        gap: 0.8rem;
    }

    .lesson-duration,
    .lesson-row-meta {
        width: 100%;
        justify-content: flex-end;
    }

    .lesson-information h4,
    .lesson-title {
        white-space: normal;
    }
}

@media (max-width: 480px) {
    .lesson-icon,
    .lesson-type-icon {
        flex-basis: 38px;
        width: 38px;
        height: 38px;
    }

    .lesson-row-main,
    .lesson-list .lesson-row > div:first-child {
        align-items: flex-start;
    }

    .lesson-duration,
    .lesson-row-meta {
        justify-content: flex-start;
        flex-wrap: wrap;
        padding-left: 54px;
    }
}


.lesson-page {
    min-height: 80vh;
    padding: 3rem 0 5rem;
}

.lesson-container {
    max-width: none;
}

.lesson-breadcrumbs {
    margin-bottom: 3rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    color: var(--muted);
    font-size: 0.9rem;
}

.lesson-breadcrumbs a:hover {
    color: var(--primary);
}

.lesson-header {
    margin-bottom: 2rem;
}

.lesson-header h1 {
    margin: 1rem 0;
    font-size: clamp(2.25rem, 5vw, 3.75rem);
    line-height: 1.1;
}

.lesson-labels {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.8rem;
    color: var(--muted);
    font-size: 0.85rem;
}

.lesson-type-badge {
    padding: 0.3rem 0.7rem;
    background: rgb(56 189 248 / 15%);
    color: var(--primary);
    border-radius: 999px;
    font-weight: 700;
}

.video-container {
    position: relative;
    overflow: hidden;
    width: 100%;
    padding-top: 56.25%;
    background: #000;
    border: 1px solid var(--border);
    border-radius: 0.75rem;
}

.video-container iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

.lesson-content {
    margin-top: 2rem;
    padding: 2rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    color: #dbe5f1;
    font-size: 1.05rem;
    line-height: 1.8;
}

.lesson-content p:first-child {
    margin-top: 0;
}

.lesson-content p:last-child {
    margin-bottom: 0;
}

.article-content {
    margin-top: 0;
}

.lab-content {
    padding: 2rem;
    background: rgb(52 211 153 / 5%);
    border: 1px solid rgb(52 211 153 / 35%);
    border-radius: 0.75rem;
}

.lab-content .lesson-content {
    padding: 0;
    background: transparent;
    border: 0;
}

.lab-heading {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.lab-heading h2,
.lab-heading p {
    margin: 0;
}

.lab-icon {
    width: 50px;
    height: 50px;
    background: rgb(52 211 153 / 15%);
    color: var(--success);
    border-radius: 50%;
    display: grid;
    place-items: center;
    font-size: 1.25rem;
}

.lesson-navigation {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 1rem;
}

.lesson-navigation > div:last-child {
    text-align: right;
}

.lesson-navigation-link {
    display: inline-flex;
    flex-direction: column;
    gap: 0.25rem;
}

.lesson-navigation-link span {
    color: var(--muted);
    font-size: 0.8rem;
}

.lesson-navigation-link strong {
    color: var(--primary);
}

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

.course-return:hover {
    color: var(--text);
}

@media (max-width: 700px) {
    .lesson-navigation {
        grid-template-columns: 1fr;
    }

    .lesson-navigation > div:last-child {
        text-align: left;
    }

    .course-return {
        grid-row: 3;
    }

    .lesson-content,
    .lab-content {
        padding: 1.25rem;
    }
}


.dashboard-hero {
    padding: 5rem 0 3rem;
    background:
        radial-gradient(circle at top right, #075985 0, transparent 35%),
        var(--background);
}

.dashboard-hero h1 {
    margin: 0.5rem 0;
    font-size: clamp(2.25rem, 5vw, 3.75rem);
}

.dashboard-hero p:last-child {
    color: var(--muted);
    font-size: 1.1rem;
}

.dashboard-section {
    padding: 3rem 0 6rem;
}

.dashboard-stats {
    margin-bottom: 4rem;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
}

.stat-card {
    padding: 1.25rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 0.75rem;
}

.stat-card span {
    display: block;
    color: var(--muted);
    font-size: 0.85rem;
}

.stat-card strong {
    display: block;
    margin-top: 0.4rem;
    font-size: 2rem;
}

.dashboard-heading {
    margin-bottom: 2rem;
}

.dashboard-heading h2 {
    margin: 0;
    font-size: 2rem;
}

@media (max-width: 800px) {
    .dashboard-stats {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 500px) {
    .dashboard-stats {
        grid-template-columns: 1fr;
    }

    .auth-card {
        padding: 1.25rem;
    }
}

.lab-launch-panel {
    margin-top: 2rem;
    padding: 1.5rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 0.75rem;
}

.lab-launch-panel p {
    color: var(--muted);
}

.danger-button {
    background: #ef4444;
    color: white;
    border: 0;
    cursor: pointer;
}

.terminal-card { margin-top: 1.5rem; overflow: hidden; background: #07111f; border: 1px solid #263b55; border-radius: 14px; box-shadow: 0 24px 70px rgb(0 0 0 / 35%); }
.terminal-toolbar, .terminal-footer { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: .8rem 1rem; background: #0d1a2c; }
.terminal-toolbar { border-bottom: 1px solid #263b55; }
.terminal-title, .terminal-actions { display: flex; align-items: center; gap: .8rem; }
.terminal-title strong, .terminal-title small { display: block; line-height: 1.3; }
.terminal-title small, .terminal-footer { color: #8496ad; font-size: .75rem; }
.terminal-dots { display: flex; gap: 5px; }
.terminal-dots i { width: 10px; height: 10px; background: #fb7185; border-radius: 50%; }
.terminal-dots i:nth-child(2) { background: #fbbf24; }
.terminal-dots i:nth-child(3) { background: #34d399; }
.terminal-state { padding: .3rem .55rem; color: #fbbf24; background: rgb(251 191 36 / 10%); border-radius: 999px; font-size: .75rem; font-weight: 700; }
.terminal-state i { display: inline-block; width: 7px; height: 7px; margin-right: 4px; background: currentColor; border-radius: 50%; }
.terminal-state.connected { color: #34d399; background: rgb(52 211 153 / 10%); }
.terminal-state.disconnected { color: #fb7185; background: rgb(251 113 133 / 10%); }
.terminal-timer { color: #a8b8cc; font: 700 .75rem monospace; }
.terminal-stop, .terminal-reconnect { padding: .4rem .65rem; color: #fff; background: #b91c1c; border: 1px solid #ef4444; border-radius: 6px; cursor: pointer; font: 700 .75rem inherit; }
.terminal-reconnect { color: #bae6fd; background: #0c4a6e; border-color: #0284c7; }
.terminal-actions form { margin: 0; }
.terminal-screen { height: clamp(480px, 58vh, 760px); padding: 12px 8px; text-align: left; }
.terminal-screen .xterm { height: 100%; }
.terminal-footer { border-top: 1px solid #263b55; }

@media (max-width: 700px) {
    .terminal-toolbar, .terminal-footer { align-items: flex-start; flex-direction: column; }
    .terminal-actions { width: 100%; flex-wrap: wrap; }
    .terminal-screen { height: 360px; }
}

.lab-workspace-grid {
    display: grid;
    grid-template-columns: minmax(0, 3fr) minmax(320px, 1fr);
    gap: 1.5rem;
    align-items: stretch;
    margin-top: 1.5rem;
}

.lab-workspace-grid .terminal-card {
    min-width: 0;
    margin-top: 0;
}

.lab-task-panel {
    display: flex;
    flex-direction: column;
    min-width: 0;
    padding: 1.4rem;
    background: linear-gradient(180deg, #142033 0%, #0f1929 100%);
    border: 1px solid #2b3b51;
    border-radius: 14px;
    box-shadow: 0 24px 70px rgb(0 0 0 / 25%);
}

.lab-task-heading {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #2b3b51;
}

.lab-task-heading .eyebrow {
    margin: 0 0 0.15rem;
    font-size: 0.7rem;
}

.lab-task-heading h3 {
    margin: 0;
    font-size: 1.1rem;
    line-height: 1.3;
}

.lab-task-icon {
    display: grid;
    flex: 0 0 38px;
    width: 38px;
    height: 38px;
    place-items: center;
    color: #082f49;
    background: var(--primary);
    border-radius: 10px;
    font-weight: 900;
}

.lab-task-description {
    flex: 1;
    padding: 1rem 0;
    color: #cbd5e1;
    font-size: 0.92rem;
}

.lab-task-description p:first-child { margin-top: 0; }
.lab-task-description p:last-child { margin-bottom: 0; }

.lab-complete-area {
    padding-top: 1rem;
    border-top: 1px solid #2b3b51;
}

.lab-complete-area p {
    margin: 0 0 0.65rem;
    color: var(--muted);
    font-size: 0.8rem;
}

.lab-complete-button {
    display: flex;
    width: 100%;
    align-items: center;
    justify-content: center;
    gap: 0.55rem;
    padding: 0.75rem 1rem;
    color: #052e26;
    background: var(--success);
    border: 0;
    border-radius: 8px;
    cursor: pointer;
    font: inherit;
    font-weight: 800;
}

.lab-complete-button:hover { background: #6ee7b7; }

@media (max-width: 900px) {
    .container { width: min(calc(100% - 2rem), var(--max-width)); }
    .lab-workspace-grid { grid-template-columns: 1fr; }
    .lab-task-panel { min-height: 280px; }
    .terminal-screen { height: 480px; }
}

@media (max-width: 500px) {
    .container { width: min(calc(100% - 1rem), var(--max-width)); }
    .lab-content { padding: 1rem; }
    .terminal-screen { height: 400px; }
}


/* =========================================================
   Authentication pages
   ========================================================= */

.auth-section {
    min-height: calc(100vh - 145px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 5rem 1rem;
    background:
        radial-gradient(
            circle at top left,
            rgb(14 116 144 / 18%),
            transparent 35%
        ),
        radial-gradient(
            circle at bottom right,
            rgb(2 132 199 / 12%),
            transparent 35%
        ),
        var(--background);
}

.auth-card {
    width: min(100%, 500px);
    padding: 2.25rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 1rem;
    box-shadow: 0 24px 70px rgb(0 0 0 / 28%);
}

.auth-heading {
    margin-bottom: 2rem;
    text-align: center;
}

.auth-heading .eyebrow {
    margin: 0 0 0.5rem;
}

.auth-heading h1 {
    margin: 0;
    color: var(--text);
    font-size: clamp(1.9rem, 4vw, 2.35rem);
    line-height: 1.15;
}

.auth-heading p:last-child {
    max-width: 400px;
    margin: 0.75rem auto 0;
    color: var(--muted);
    line-height: 1.6;
}

.social-auth-form {
    margin: 0;
}

.google-auth-button {
    width: 100%;
    min-height: 50px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 0.8rem 1rem;
    background: #ffffff;
    color: #1f2937;
    border: 1px solid #d1d5db;
    border-radius: 0.6rem;
    cursor: pointer;
    font: inherit;
    font-weight: 700;
    box-shadow: 0 2px 8px rgb(0 0 0 / 12%);
    transition:
        transform 0.18s ease,
        background-color 0.18s ease,
        box-shadow 0.18s ease;
}

.google-auth-button:hover {
    background: #f8fafc;
    transform: translateY(-1px);
    box-shadow: 0 8px 20px rgb(0 0 0 / 18%);
}

.google-auth-button:active {
    transform: translateY(0);
}

.google-auth-button:focus-visible {
    outline: 3px solid rgb(56 189 248 / 35%);
    outline-offset: 3px;
}

.google-auth-icon {
    width: 21px;
    height: 21px;
    flex-shrink: 0;
}

.auth-divider {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 1.75rem 0;
    color: var(--muted);
    font-size: 0.8rem;
    text-align: center;
}

.auth-divider::before,
.auth-divider::after {
    content: "";
    flex: 1;
    height: 1px;
    background: var(--border);
}

.auth-divider span {
    flex-shrink: 0;
}

.auth-form {
    display: grid;
    gap: 1.25rem;
}

.form-group {
    display: grid;
    gap: 0.5rem;
}

.form-group label {
    color: var(--text);
    font-size: 0.9rem;
    font-weight: 700;
}

.form-group input {
    width: 100%;
    min-height: 48px;
    padding: 0.85rem 1rem;
    background: var(--background);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 0.55rem;
    font: inherit;
    transition:
        border-color 0.18s ease,
        box-shadow 0.18s ease;
}

.form-group input::placeholder {
    color: #64748b;
}

.form-group input:hover {
    border-color: #3b4c63;
}

.form-group input:focus {
    border-color: var(--primary);
    outline: none;
    box-shadow: 0 0 0 4px rgb(56 189 248 / 12%);
}

.auth-button {
    width: 100%;
    min-height: 50px;
    margin-top: 0.25rem;
    padding: 0.85rem 1rem;
    background: var(--primary);
    color: #082f49;
    border: 0;
    border-radius: 0.55rem;
    cursor: pointer;
    font: inherit;
    font-weight: 800;
}

.auth-button:hover {
    background: #7dd3fc;
}

.auth-switch {
    margin: 1.6rem 0 0;
    color: var(--muted);
    text-align: center;
}

.auth-switch a {
    color: var(--primary);
    font-weight: 700;
}

.auth-switch a:hover {
    text-decoration: underline;
}

.auth-privacy-note {
    margin: 1rem 0 0;
    color: var(--muted);
    font-size: 0.78rem;
    line-height: 1.5;
    text-align: center;
}

.form-errors {
    margin-bottom: 1.25rem;
    padding: 0.9rem 1rem;
    background: rgb(248 113 113 / 10%);
    color: #fca5a5;
    border: 1px solid rgb(248 113 113 / 30%);
    border-radius: 0.55rem;
}

.form-errors p {
    margin: 0;
}

.form-errors p + p {
    margin-top: 0.4rem;
}

.field-error {
    margin: 0;
    color: #f87171;
    font-size: 0.85rem;
}

.field-help {
    color: var(--muted);
    font-size: 0.8rem;
    line-height: 1.5;
}

.field-help ul {
    margin: 0.4rem 0 0;
    padding-left: 1.25rem;
}


.auth-label-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.auth-label-row a {
    color: var(--primary);
    font-size: 0.82rem;
    font-weight: 700;
}

.auth-label-row a:hover {
    text-decoration: underline;
}

.auth-checkbox {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    color: var(--muted);
    font-size: 0.9rem;
    cursor: pointer;
}

.auth-checkbox input {
    width: 16px;
    height: 16px;
    accent-color: var(--primary);
}

.message {
    margin-bottom: 1rem;
    padding: 1rem;
    border-radius: 0.55rem;
}

.message.success {
    background: rgb(52 211 153 / 10%);
    color: var(--success);
    border: 1px solid rgb(52 211 153 / 30%);
}

@media (max-width: 600px) {
    .auth-section {
        align-items: flex-start;
        padding: 2.5rem 1rem;
    }

    .auth-card {
        padding: 1.5rem;
        border-radius: 0.8rem;
    }

    .auth-heading {
        margin-bottom: 1.5rem;
    }

    .auth-divider {
        margin: 1.4rem 0;
    }
}


/* =========================================================
   Password reset states
   ========================================================= */

.auth-status-icon {
    width: 72px;
    height: 72px;
    display: grid;
    place-items: center;
    margin: 0 auto 1.5rem;
    color: var(--primary);
    background: rgb(56 189 248 / 12%);
    border: 1px solid rgb(56 189 248 / 28%);
    border-radius: 50%;
    font-size: 1.8rem;
    font-weight: 900;
    box-shadow: 0 12px 32px rgb(56 189 248 / 12%);
}

.auth-status-success {
    color: var(--success);
    background: rgb(52 211 153 / 12%);
    border-color: rgb(52 211 153 / 30%);
}

.auth-status-error {
    color: #f87171;
    background: rgb(248 113 113 / 12%);
    border-color: rgb(248 113 113 / 30%);
}

.auth-information {
    margin-bottom: 1.25rem;
    padding: 0.9rem 1rem;
    color: var(--muted);
    background: rgb(56 189 248 / 6%);
    border: 1px solid rgb(56 189 248 / 15%);
    border-radius: 0.65rem;
    font-size: 0.85rem;
    text-align: center;
}

.auth-information p {
    margin: 0;
}

.auth-button-link {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
}

/* =========================================================
   Updated lesson detail page
   ========================================================= */

.lesson-detail-page {
    min-height: calc(100vh - 140px);
    padding: 2.5rem 0 6rem;
}

.lesson-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    align-items: start;
    gap: 2rem;
}

.lesson-main {
    min-width: 0;
}

.lesson-header {
    margin-bottom: 1.75rem;
}

.lesson-header-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.65rem;
    margin-bottom: 0.9rem;
    color: var(--muted);
    font-size: 0.82rem;
}

.lesson-header-meta > span:not(.lesson-type-badge):not(
    .lesson-complete-badge
) {
    padding: 0.25rem 0.55rem;
    background: rgb(255 255 255 / 3%);
    border: 1px solid var(--border);
    border-radius: 999px;
}

.lesson-header h1 {
    margin: 0;
    font-size: clamp(2.25rem, 5vw, 3.8rem);
    line-height: 1.08;
    letter-spacing: -0.035em;
}

.lesson-video-section,
.lesson-lab-section {
    display: grid;
    gap: 1.5rem;
}

.video-wrapper {
    position: relative;
    overflow: hidden;
    width: 100%;
    padding-top: 56.25%;
    background: #000000;
    border: 1px solid var(--border);
    border-radius: 0.9rem;
    box-shadow: 0 20px 55px rgb(0 0 0 / 28%);
}

.video-wrapper iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

.lesson-detail-page .lesson-content {
    margin-top: 0;
}

.lab-launch-card {
    display: grid;
    gap: 1.4rem;
    padding: 1.5rem;
    background:
        linear-gradient(
            145deg,
            rgb(52 211 153 / 7%),
            rgb(17 24 39 / 95%)
        );
    border: 1px solid rgb(52 211 153 / 25%);
    border-radius: 0.9rem;
}

.lab-launch-copy .eyebrow {
    margin: 0 0 0.35rem;
}

.lab-launch-copy h2 {
    margin: 0;
    font-size: 1.4rem;
}

.lab-launch-copy p:last-child {
    margin: 0.6rem 0 0;
    color: var(--muted);
}

.lab-terminal-shell {
    display: grid;
    overflow: hidden;
    background: #07111f;
    border: 1px solid #263b55;
    border-radius: 0.85rem;
    box-shadow: 0 22px 60px rgb(0 0 0 / 28%);
}

.lab-session-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.8rem 1rem;
    background: #0d1a2c;
    border-bottom: 1px solid #263b55;
    color: var(--muted);
    font-size: 0.8rem;
}

.lab-session-status {
    display: flex;
    align-items: center;
    gap: 0.55rem;
}

.lab-session-status strong {
    color: var(--text);
}

.lab-status-indicator {
    width: 9px;
    height: 9px;
    background: var(--success);
    border-radius: 50%;
    box-shadow: 0 0 0 4px rgb(52 211 153 / 10%);
}

.lab-terminal {
    min-height: 480px;
    padding: 0.75rem;
}

.lab-session-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: #0d1a2c;
    border-top: 1px solid #263b55;
}

.lab-session-actions form {
    margin: 0;
}

.lesson-notice {
    padding: 1.4rem;
    background: rgb(251 191 36 / 7%);
    border: 1px solid rgb(251 191 36 / 25%);
    border-radius: 0.8rem;
}

.lesson-notice h2 {
    margin: 0;
}

.lesson-notice p {
    margin: 0.5rem 0 0;
    color: var(--muted);
}

.primary-button,
.secondary-button {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.72rem 1rem;
    border-radius: 0.55rem;
    cursor: pointer;
    font: inherit;
    font-size: 0.88rem;
    font-weight: 800;
    transition:
        background-color 0.18s ease,
        border-color 0.18s ease,
        transform 0.18s ease;
}

.primary-button {
    color: #082f49;
    background: var(--primary);
    border: 1px solid var(--primary);
}

.primary-button:hover {
    background: #7dd3fc;
    border-color: #7dd3fc;
    transform: translateY(-1px);
}

.secondary-button {
    color: var(--text);
    background: transparent;
    border: 1px solid var(--border);
}

.secondary-button:hover {
    background: var(--surface-light);
    border-color: #3b4c63;
}

.lesson-completion-section {
    margin-top: 2rem;
}

.completion-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    padding: 1.5rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 0.9rem;
}

.completion-card .eyebrow {
    margin: 0 0 0.3rem;
    font-size: 0.7rem;
}

.completion-card h2 {
    margin: 0;
    font-size: 1.3rem;
}

.completion-card p:last-child {
    max-width: 680px;
    margin: 0.5rem 0 0;
    color: var(--muted);
}

.completion-card form {
    flex-shrink: 0;
    margin: 0;
}

.completion-card-success {
    background: rgb(52 211 153 / 6%);
    border-color: rgb(52 211 153 / 28%);
}

.lesson-detail-page .lesson-navigation {
    grid-template-columns: 1fr 1fr;
}

.lesson-navigation > div:empty {
    display: block;
}

.lesson-navigation-next {
    align-items: flex-end;
    text-align: right;
}

.lesson-sidebar {
    position: sticky;
    top: 92px;
    display: grid;
    gap: 1rem;
}

.lesson-sidebar-card {
    padding: 1.3rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 0.85rem;
}

.lesson-sidebar-card .eyebrow {
    margin: 0 0 0.35rem;
    font-size: 0.68rem;
}

.lesson-sidebar-card h2 {
    margin: 0;
    font-size: 1.15rem;
    line-height: 1.35;
}

.lesson-sidebar-card p {
    margin: 0.65rem 0 0;
    color: var(--muted);
    font-size: 0.88rem;
}

.lesson-sidebar-card .secondary-button {
    width: 100%;
    margin-top: 1rem;
}


/* =========================================================
   Messages
   ========================================================= */

.messages {
    margin-bottom: 1.5rem;
}

.message {
    margin-bottom: 0.75rem;
    padding: 0.9rem 1rem;
    border: 1px solid var(--border);
    border-radius: 0.65rem;
}

.message-success,
.message.success {
    color: var(--success);
    background: rgb(52 211 153 / 8%);
    border-color: rgb(52 211 153 / 25%);
}

.message-error,
.message.error {
    color: #fca5a5;
    background: rgb(248 113 113 / 8%);
    border-color: rgb(248 113 113 / 25%);
}

.message-info,
.message.info {
    color: #bae6fd;
    background: rgb(56 189 248 / 8%);
    border-color: rgb(56 189 248 / 25%);
}


/* =========================================================
   Responsive course and lesson pages
   ========================================================= */

@media (max-width: 1050px) {
    .course-hero {
        grid-template-columns: 1fr;
    }

    .course-progress-card {
        max-width: 560px;
    }

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

    .lesson-sidebar {
        position: static;
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 700px) {
    .course-detail-page,
    .lesson-detail-page {
        padding-top: 1.5rem;
    }

    .course-breadcrumbs,
    .lesson-breadcrumbs {
        margin-bottom: 1.5rem;
    }

    .course-hero {
        gap: 2rem;
        padding: 1.5rem;
    }

    .course-content {
        padding-top: 3rem;
    }

    .module-heading {
        flex-direction: column;
        gap: 1rem;
    }

    .module-lessons .lesson-row {
        align-items: flex-start;
        flex-direction: column;
        gap: 0.8rem;
    }

    .lesson-row-meta {
        width: 100%;
        justify-content: flex-end;
    }

    .lesson-title {
        white-space: normal;
    }

    .completion-card {
        align-items: stretch;
        flex-direction: column;
        gap: 1.25rem;
    }

    .completion-card form,
    .completion-card .primary-button {
        width: 100%;
    }

    .lesson-detail-page .lesson-navigation {
        grid-template-columns: 1fr;
    }

    .lesson-navigation-next {
        align-items: flex-start;
        text-align: left;
    }

    .lesson-sidebar {
        grid-template-columns: 1fr;
    }

    .lab-session-header {
        align-items: flex-start;
        flex-direction: column;
    }

    .lab-terminal {
        min-height: 380px;
    }
}

@media (max-width: 480px) {
    .course-hero {
        padding: 1.15rem;
    }

    .lesson-type-icon {
        flex-basis: 38px;
        width: 38px;
        height: 38px;
    }

    .lesson-row-main {
        align-items: flex-start;
    }

    .lesson-row-meta {
        justify-content: flex-start;
        flex-wrap: wrap;
        padding-left: 54px;
    }

    .lab-terminal {
        min-height: 330px;
    }
}
.lab-workspace-grid {
    align-items: start;
}

.terminal-card {
    align-self: start;
    height: auto;
}

.terminal-screen {
    height: 420px;
    min-height: 420px;
    max-height: 420px;
}

.lab-task-panel {
    align-self: start;
}


.lab-steps {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.lab-step {
    overflow: hidden;
    border: 1px solid #dbe3ee;
    border-radius: 10px;
    background: #ffffff;
    transition:
        border-color 0.2s ease,
        box-shadow 0.2s ease;
}

.lab-step.is-open {
    border-color: #93c5fd;
    box-shadow: 0 5px 18px rgba(15, 23, 42, 0.06);
}

.lab-step-toggle {
    display: grid;
    grid-template-columns: 32px minmax(0, 1fr) 20px;
    align-items: center;
    width: 100%;
    gap: 11px;
    padding: 13px 14px;
    border: 0;
    background: transparent;
    color: #0f172a;
    font: inherit;
    text-align: left;
    cursor: pointer;
}

.lab-step-toggle:hover {
    background: #f8fafc;
}

.lab-step-toggle:focus-visible {
    outline: 3px solid rgba(59, 130, 246, 0.25);
    outline-offset: -3px;
}

.lab-step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    border-radius: 8px;
    background: #eaf2ff;
    color: #1d4ed8;
    font-size: 0.8rem;
    font-weight: 700;
}

.lab-step-title {
    min-width: 0;
    font-weight: 650;
    line-height: 1.35;
}

.lab-step-chevron {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #64748b;
    font-size: 0.9rem;
    transition: transform 0.2s ease;
}

.lab-step.is-open .lab-step-chevron {
    transform: rotate(180deg);
}

.lab-step-content {
    padding: 0 15px 16px 57px;
    color: #475569;
    font-size: 0.92rem;
    line-height: 1.65;
}

.lab-step-content[hidden] {
    display: none;
}

.lab-step-content p {
    margin: 0 0 10px;
}

.lab-step-content p:last-child {
    margin-bottom: 0;
}

.lab-step-content code {
    padding: 2px 6px;
    border-radius: 5px;
    background: #eaf0f7;
    color: #0f172a;
    font-family:
        "Cascadia Code",
        "SFMono-Regular",
        Consolas,
        monospace;
    font-size: 0.88em;
}

@media (max-width: 700px) {
    .lab-step-content {
        padding-left: 15px;
    }
}


:root {
    --terminal-bg: #031411;
    --terminal-surface: #0a1d19;
    --terminal-surface-2: #0d2420;
    --terminal-grid: rgb(42 226 190 / 7%);
    --terminal-line: rgb(48 220 188 / 22%);
    --terminal-accent: #2fe0c1;
    --terminal-accent-dark: #052a24;
    --terminal-text: #f3f7f6;
    --terminal-muted: #78918b;
    --terminal-mono: "IBM Plex Mono", "Cascadia Code", Consolas, monospace;
}

body {
    background-color: var(--terminal-bg);
    background-image: linear-gradient(var(--terminal-grid) 1px, transparent 1px), linear-gradient(90deg, var(--terminal-grid) 1px, transparent 1px);
    background-size: 32px 32px;
    color: var(--terminal-text);
}

.site-header { background: rgb(3 16 14 / 94%); border-color: var(--terminal-line); backdrop-filter: blur(14px); }
.navbar { min-height: 64px; }
.logo-copy { flex-direction: row; align-items: center; gap: .65rem; }
.logo-copy::before { content: "K"; display: grid; place-items: center; width: 25px; height: 25px; border: 1px solid var(--terminal-accent); color: var(--terminal-accent); font: 700 .75rem var(--terminal-mono); }
.logo-copy strong { font: 800 .84rem var(--terminal-mono); letter-spacing: .16em; text-transform: uppercase; }
.logo-copy small { margin: 0; color: #435c56; font: 600 .66rem var(--terminal-mono); }
.nav-links > a, .nav-button, .nav-user-details strong { color: #688079; font: 600 .7rem var(--terminal-mono); text-transform: lowercase; }
.nav-links > a:hover, .nav-links > a:focus-visible, .nav-button:hover { color: var(--terminal-accent); background: transparent; }
.nav-links > a[aria-current="page"] { color: var(--terminal-accent); border-bottom: 2px solid var(--terminal-accent); }
.nav-signup { background: var(--terminal-accent) !important; color: #03201b !important; border-radius: 0 !important; text-transform: uppercase !important; }
.nav-user { border: 1px solid var(--terminal-line); padding: .5rem .7rem; }

.terminal-home { min-height: 100vh; font-family: var(--terminal-mono); }
.terminal-home .container { width: min(calc(100% - 3rem), 1440px); }
.terminal-hero { padding: clamp(4rem, 9vw, 8rem) 0 5rem; border-bottom: 1px solid var(--terminal-line); }
.system-line { display: flex; align-items: center; gap: .75rem; margin: 0 0 3rem; color: var(--terminal-accent); font-size: .7rem; letter-spacing: .12em; text-transform: uppercase; }
.system-line::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--terminal-accent); box-shadow: 0 0 14px var(--terminal-accent); }
.system-line::after { content: ""; width: min(18rem, 30vw); height: 1px; background: var(--terminal-line); }
.command-label { display: inline-block; padding: .18rem .5rem; margin-bottom: 1.4rem; border: 1px solid var(--terminal-line); color: var(--terminal-accent); font-size: .67rem; letter-spacing: .08em; text-transform: uppercase; }
.terminal-hero h1 { max-width: 850px; margin: 0; color: #fff; font-family: Arial, Helvetica, sans-serif; font-size: clamp(3.4rem, 7.5vw, 7rem); line-height: .9; letter-spacing: -.065em; }
.terminal-hero h1 span { display: block; color: var(--terminal-accent); }
.hero-command { max-width: 720px; margin: 1.8rem 0 0; color: var(--terminal-muted); font-size: clamp(.75rem, 1.5vw, .95rem); }
.hero-command::before { content: "$ "; color: var(--terminal-accent); }
.terminal-actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 2rem; }
.terminal-button { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: .75rem 1.35rem; border: 1px solid var(--terminal-line); color: #91a69f; font-size: .72rem; font-weight: 800; letter-spacing: .09em; text-transform: uppercase; }
.terminal-button.primary { color: #03201b; background: var(--terminal-accent); border-color: var(--terminal-accent); }
.terminal-button:hover { color: var(--terminal-accent); border-color: var(--terminal-accent); }
.terminal-button.primary:hover { color: #031814; background: #70efd9; }
.terminal-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; margin-top: 5rem; }
.terminal-stat { padding-left: 1.1rem; border-left: 2px solid var(--terminal-accent); }
.terminal-stat strong { display: block; color: #fff; font-size: 1.5rem; }
.terminal-stat span { color: #4f6761; font-size: .66rem; }
.catalogue { padding: 4.5rem 0 6rem; }
.catalogue-heading { display: grid; grid-template-columns: .8fr 1.5fr; gap: 3rem; align-items: end; margin-bottom: 2.5rem; }
.catalogue-heading h2 { margin: .6rem 0 0; font-family: Arial, Helvetica, sans-serif; font-size: clamp(2rem, 4vw, 3.5rem); line-height: 1; }
.catalogue-heading > p { max-width: 650px; color: var(--terminal-muted); font-size: .78rem; }
.path-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.path-card { min-height: 330px; padding: 1.7rem; background: rgb(10 29 25 / 94%); border: 1px solid var(--terminal-line); border-radius: 0; box-shadow: none; }
.path-card:hover { transform: translateY(-3px); border-color: var(--terminal-accent); box-shadow: 0 14px 45px rgb(0 0 0 / 22%); }
.path-index { color: var(--terminal-accent); font-size: .7rem; }
.path-card h3 { margin-top: 3.5rem; font-family: Arial, Helvetica, sans-serif; font-size: 1.25rem; }
.path-card p { color: var(--terminal-muted); font-size: .75rem; }
.status.available, .course-count { color: var(--terminal-accent); background: transparent; border: 1px solid var(--terminal-line); border-radius: 0; font: 700 .64rem var(--terminal-mono); }
.course-count { display: inline-block; padding: .2rem .45rem; }
.card-link { width: 100%; padding: .75rem; color: #06201b; background: var(--terminal-accent); text-align: center; font: 800 .7rem var(--terminal-mono); letter-spacing: .08em; text-transform: uppercase; }
.site-footer { background: #03100e; border-color: var(--terminal-line); color: #3f5650; font: .65rem var(--terminal-mono); }

.auth-section { background: transparent; }
.auth-card { background: rgb(10 29 25 / 96%); border: 1px solid var(--terminal-line); border-radius: 0; box-shadow: 0 30px 80px rgb(0 0 0 / 30%); }
.auth-heading .eyebrow, .eyebrow { color: var(--terminal-accent); font-family: var(--terminal-mono); }
.auth-button { border-radius: 0; background: var(--terminal-accent); color: #03201b; }
.google-auth-button, .auth-form input { border-radius: 0; border-color: var(--terminal-line); background: #061713; }
.auth-form input:focus { border-color: var(--terminal-accent); box-shadow: 0 0 0 3px rgb(47 224 193 / 10%); }

@media (max-width: 900px) {
    .nav-links { background: #061713; border-color: var(--terminal-line); }
    .terminal-stats, .path-grid { grid-template-columns: 1fr; }
    .catalogue-heading { grid-template-columns: 1fr; gap: 1rem; }
    .path-card { min-height: 280px; }
}
@media (max-width: 520px) {
    .terminal-home .container { width: min(calc(100% - 2rem), 1440px); }
    .logo-copy small { display: none; }
    .terminal-hero h1 { font-size: 3.2rem; }
    .terminal-stats { gap: 1.3rem; }
}



.nav-support {
    padding: 9px 14px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 8px;
}

.nav-support:hover {
    border-color: rgba(255, 255, 255, 0.42);
}

.about-page {
    padding: 72px 0 96px;
}

.about-hero {
    max-width: 900px;
    margin-bottom: 64px;
}

.about-eyebrow {
    margin: 0 0 14px;
    font-family: monospace;
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: lowercase;
    color: var(--text-muted, #697586);
}

.about-hero h1 {
    max-width: 840px;
    margin: 0;
    font-size: clamp(2.8rem, 7vw, 5.4rem);
    line-height: 0.98;
    letter-spacing: -0.06em;
    color: var(--text-primary, #101828);
}

.about-intro {
    max-width: 750px;
    margin: 24px 0 0;
    font-size: 1.12rem;
    line-height: 1.75;
    color: var(--text-muted, #697586);
}

.about-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 32px;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
}

.about-panel {
    padding: 38px;
    border: 1px solid var(--border-color, #e4e7ec);
    border-radius: 18px;
    background: var(--surface-color, #ffffff);
}

.about-panel-number {
    margin: 0 0 44px;
    font-family: monospace;
    font-size: 0.82rem;
    color: var(--text-muted, #697586);
}

.about-panel h2 {
    margin: 0 0 18px;
    font-size: 1.7rem;
    letter-spacing: -0.03em;
    color: var(--text-primary, #101828);
}

.about-panel p {
    margin: 0 0 16px;
    line-height: 1.75;
    color: var(--text-muted, #697586);
}

.about-panel p:last-child {
    margin-bottom: 0;
}

.about-panel-dark {
    border-color: #111827;
    background: #111827;
}

.about-panel-dark h2 {
    color: #ffffff;
}

.about-panel-dark p,
.about-panel-dark .about-panel-number {
    color: rgba(255, 255, 255, 0.68);
}

.about-process {
    display: grid;
    gap: 14px;
    margin: 26px 0 0;
    padding-left: 22px;
    color: rgba(255, 255, 255, 0.9);
}

.about-process li {
    padding-left: 4px;
    line-height: 1.55;
}

.about-section {
    display: grid;
    grid-template-columns: minmax(240px, 0.8fr) minmax(0, 1.2fr);
    gap: 64px;
    margin-top: 24px;
    padding: 48px 40px;
    border: 1px solid var(--border-color, #e4e7ec);
    border-radius: 18px;
    background: var(--surface-color, #ffffff);
}

.about-section h2 {
    max-width: 460px;
    margin: 0;
    font-size: clamp(1.9rem, 4vw, 3rem);
    line-height: 1.1;
    letter-spacing: -0.045em;
}

.about-section-content p {
    margin: 0 0 18px;
    line-height: 1.75;
    color: var(--text-muted, #697586);
}

.about-section-content p:last-child {
    margin-bottom: 0;
}

.about-support {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 48px;
    margin-top: 24px;
    padding: 42px 40px;
    border-radius: 18px;
    background: var(--surface-subtle, #f4f6f8);
}

.about-support-content {
    max-width: 720px;
}

.about-support h2 {
    margin: 0 0 16px;
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    letter-spacing: -0.04em;
}

.about-support p {
    margin: 0 0 14px;
    line-height: 1.7;
    color: var(--text-muted, #697586);
}

.about-support-note {
    font-size: 0.86rem;
}

@media (max-width: 850px) {
    .about-grid,
    .about-section {
        grid-template-columns: 1fr;
    }

    .about-section {
        gap: 28px;
    }

    .about-support {
        align-items: flex-start;
        flex-direction: column;
    }
}

@media (max-width: 600px) {
    .about-page {
        padding: 48px 0 72px;
    }

    .about-hero {
        margin-bottom: 44px;
    }

    .about-actions {
        flex-direction: column;
    }

    .about-actions .button,
    .about-support .button {
        width: 100%;
        text-align: center;
    }

    .about-panel,
    .about-section,
    .about-support {
        padding: 28px 24px;
        border-radius: 14px;
    }

    .about-panel-number {
        margin-bottom: 30px;
    }
}


/* Keep text visible on turquoise action buttons */
.btn,
.button,
.primary-button,
.lesson-complete-card a,
.lesson-complete-actions a {
    color: #03251f !important;
}

.btn:hover,
.button:hover,
.primary-button:hover,
.lesson-complete-card a:hover,
.lesson-complete-actions a:hover {
    color: #03251f !important;
}


/* Homepage hero typewriter */

.hero-typewriter [data-typewriter-line] {
    position: relative;
    width: fit-content;
    min-height: 0.9em;
}

.hero-typewriter.is-typing [data-typewriter-line].is-active::after {
    content: "";
    display: inline-block;
    width: 0.055em;
    height: 0.78em;
    margin-left: 0.08em;
    background: currentColor;
    vertical-align: -0.03em;
    animation: hero-cursor-blink 0.75s steps(1) infinite;
}

.hero-typewriter.is-complete [data-typewriter-line]:last-child::after {
    content: "";
    display: inline-block;
    width: 0.055em;
    height: 0.78em;
    margin-left: 0.08em;
    background: currentColor;
    vertical-align: -0.03em;
    animation:
        hero-cursor-blink 0.75s steps(1) 2,
        hero-cursor-fade 0.3s ease 1.4s forwards;
}

@keyframes hero-cursor-blink {
    0%,
    49% {
        opacity: 1;
    }

    50%,
    100% {
        opacity: 0;
    }
}

@keyframes hero-cursor-fade {
    to {
        opacity: 0;
    }
}

@media (prefers-reduced-motion: reduce) {
    .hero-typewriter [data-typewriter-line]::after {
        display: none !important;
        animation: none !important;
    }
}