/* ==========================================================
     nomoredevs — editorial / clean / light
     ========================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
    --paper: #faf8f4;
    --paper-2: #f2efe8;
    --ink: #131311;
    --ink-soft: #3d3a33;
    --ink-muted: #7a7668;
    --rule: #1a1a17;
    --rule-soft: #d9d4c7;
    --accent: #c7512e;
    --accent-ink: #7a2f18;
    --pill: #ece7db;
    --card: #ffffff;
    --shadow-card: 0 1px 0 rgba(19,19,17,0.04), 0 8px 24px -16px rgba(19,19,17,0.14);
    --shadow-card-hover: 0 1px 0 rgba(19,19,17,0.06), 0 20px 40px -20px rgba(19,19,17,0.24);

    --radius: 10px;

    --serif: 'Inter', system-ui, -apple-system, sans-serif;
    --sans: 'Inter', system-ui, -apple-system, sans-serif;
    --mono: 'Inter', system-ui, -apple-system, sans-serif;

    --maxw: 1240px;
    --pad-x: clamp(20px, 4vw, 48px);
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--paper);
    color: var(--ink);
    font-family: var(--sans);
    font-size: 16px;
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { font-family: inherit; cursor: pointer; }

/* ----------------------------------------------------------
     TOP STRIP
     ---------------------------------------------------------- */
.top-strip {
    background: var(--ink);
    color: var(--paper);
    font-family: var(--mono);
    font-size: 12px;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    padding: 10px var(--pad-x);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
}
.top-strip__dot {
    display: inline-block;
    width: 6px; height: 6px;
    background: var(--accent);
    border-radius: 50%;
    margin-right: 8px;
    vertical-align: middle;
}

/* ----------------------------------------------------------
     SITE HEADER
     ---------------------------------------------------------- */
.site-header {
    background: var(--paper);
    border-bottom: 1px solid var(--rule);
}
.site-header__inner {
    max-width: 100%;
    margin: 0 auto;
    padding: 22px var(--pad-x);
    display: flex;
    align-items: center;
    gap: 32px;
}
.brand {
    display: inline-flex;
    align-items: center;
    line-height: 0;
}
.brand__logo {
    display: block;
    height: 32px;
    width: auto;
}
.brand--footer .brand__logo {
    height: 28px;
}
.site-nav {
    display: flex;
    gap: 4px;
    margin-left: auto;
    flex-wrap: wrap;
}
.site-nav__link {
    font-family: var(--sans);
    font-size: 14px;
    font-weight: 500;
    padding: 8px 14px;
    border-radius: 999px;
    color: var(--ink-soft);
    transition: background 0.2s, color 0.2s;
}
.site-nav__link:hover {
    background: var(--pill);
    color: var(--ink);
}
.site-nav__link.is-active {
    background: var(--ink);
    color: var(--paper);
}
.site-nav__link.is-active:hover {
    background: var(--ink);
    color: var(--paper);
}

/* ----------------------------------------------------------
     PAGE MASTHEAD (list pages)
     ---------------------------------------------------------- */
.masthead {
    border-bottom: 1px solid var(--rule);
    padding: 56px var(--pad-x) 40px;
    background: var(--paper);
}
.masthead__inner {
    max-width: var(--maxw);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: end;
    gap: 32px;
}
.masthead__eyebrow {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--ink-muted);
    margin-bottom: 16px;
}
.masthead__eyebrow .dash {
    color: var(--accent);
}
.masthead__title {
    font-family: var(--serif);
    font-weight: 500;
    font-style: normal;
    font-size: clamp(44px, 7vw, 84px);
    line-height: 0.95;
    letter-spacing: -0.025em;
    margin: 0 0 18px;
    color: var(--ink);
}
.masthead__title .roman {
    font-style: normal;
    font-weight: 700;
}
.masthead__lede {
    font-family: var(--serif);
    font-size: clamp(16px, 1.4vw, 19px);
    line-height: 1.55;
    color: var(--ink-soft);
    max-width: 56ch;
    margin: 0;
}
.masthead__meta {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--ink-muted);
    text-align: right;
    white-space: nowrap;
}
.masthead__meta-num {
    display: block;
    font-family: var(--serif);
    font-style: normal;
    font-weight: 500;
    font-size: 56px;
    color: var(--ink);
    line-height: 1;
    letter-spacing: -0.02em;
    text-transform: none;
    margin-bottom: 6px;
}

/* ----------------------------------------------------------
     FILTER BAR
     ---------------------------------------------------------- */
.filter-bar {
    border-bottom: 1px solid var(--rule-soft);
    background: var(--paper);
    padding: 16px var(--pad-x);
    position: sticky;
    top: 0;
    z-index: 5;
    backdrop-filter: blur(8px);
    background: rgba(250,248,244,0.92);
}
.filter-bar__inner {
    max-width: var(--maxw);
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}
.filter-chip {
    font-family: var(--sans);
    font-size: 13px;
    font-weight: 500;
    border: 1px solid var(--rule-soft);
    background: transparent;
    color: var(--ink-soft);
    padding: 8px 16px;
    border-radius: 999px;
    transition: all 0.18s ease;
}
.filter-chip:hover {
    border-color: var(--ink);
    color: var(--ink);
}
.filter-chip.is-active {
    background: var(--ink);
    border-color: var(--ink);
    color: var(--paper);
}
.filter-bar__sort {
    margin-left: auto;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--ink-muted);
}

/* ----------------------------------------------------------
     COURSE GRID
     ---------------------------------------------------------- */
.course-grid-section {
    padding: 48px var(--pad-x) 96px;
}
.course-grid {
    max-width: var(--maxw);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}
@media (max-width: 960px) {
    .course-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
}
@media (max-width: 640px) {
    .course-grid { grid-template-columns: 1fr; }
}

/* Course card */
.course-card {
    display: flex;
    flex-direction: column;
    background: var(--card);
    border: 1px solid var(--rule-soft);
    border-radius: var(--radius);
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
    box-shadow: var(--shadow-card);
}
.course-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card-hover);
    border-color: var(--ink);
}
.course-card__cover {
    display: none;
}
.course-card__cover--hidden-alt {
    aspect-ratio: 16 / 10;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}
.course-card__cover::before {
    content: "";
    position: absolute; inset: 0;
    background:
        radial-gradient(circle at 30% 20%, rgba(255,255,255,0.28), transparent 50%),
        radial-gradient(circle at 80% 90%, rgba(0,0,0,0.22), transparent 55%);
    pointer-events: none;
}
.course-card__cover::after {
    content: "";
    position: absolute; inset: 0;
    background-image:
        repeating-linear-gradient(0deg, rgba(0,0,0,0.035) 0 1px, transparent 1px 4px);
    mix-blend-mode: multiply;
    opacity: 0.6;
    pointer-events: none;
}
.course-card__mark {
    font-family: var(--serif);
    font-style: normal;
    font-weight: 500;
    font-size: clamp(56px, 7vw, 84px);
    color: rgba(255,255,255,0.95);
    line-height: 1;
    letter-spacing: -0.03em;
    position: relative;
    z-index: 1;
    text-shadow: 0 2px 24px rgba(0,0,0,0.25);
}
.course-card__top-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
}
.course-card__badge {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    background: var(--ink);
    color: var(--paper);
    padding: 4px 9px;
    border-radius: var(--radius);
    font-weight: 600;
}
.course-card__category {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent);
    font-weight: 600;
}
.course-card__body {
    padding: 20px 22px 22px;
    display: flex;
    flex-direction: column;
    flex: 1;
}
.course-card__title {
    font-family: var(--serif);
    font-weight: 600;
    font-size: 20px;
    line-height: 1.2;
    letter-spacing: -0.01em;
    color: var(--ink);
    margin: 0 0 8px;
}
.course-card__subtitle {
    font-size: 14px;
    line-height: 1.5;
    color: var(--ink-soft);
    margin: 0 0 14px;
    flex: 1;
}
.course-card__instructor {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--ink-muted);
    margin-bottom: 14px;
}
.course-card__meta {
    display: flex;
    align-items: center;
    gap: 10px;
    padding-top: 14px;
    border-top: 1px solid var(--rule-soft);
    font-size: 13px;
    color: var(--ink-soft);
}
.course-card__rating {
    display: flex;
    align-items: center;
    gap: 4px;
    font-weight: 600;
    color: var(--ink);
}
.course-card__star {
    color: var(--accent);
}
.course-card__ratings-count {
    color: var(--ink-muted);
    font-size: 12px;
}
.course-card__dot {
    width: 3px;
    height: 3px;
    background: var(--ink-muted);
    border-radius: 50%;
}
.course-card__hours {
    font-family: var(--mono);
    font-size: 12px;
    color: var(--ink-muted);
}
.course-card__free {
    margin-left: auto;
    font-family: var(--mono);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--accent);
}

/* ----------------------------------------------------------
     DETAIL PAGE
     ---------------------------------------------------------- */
.detail-hero {
    background: var(--ink);
    color: var(--paper);
    padding: 48px var(--pad-x) 72px;
    position: relative;
    overflow: hidden;
}
.detail-hero::before {
    content: "";
    position: absolute;
    top: -40%; right: -10%;
    width: 60vw; height: 60vw;
    background: radial-gradient(circle, var(--accent) 0%, transparent 60%);
    opacity: 0.18;
    pointer-events: none;
}
.detail-hero__inner {
    max-width: var(--maxw);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 56px;
    position: relative;
    z-index: 1;
}
@media (max-width: 960px) {
    .detail-hero__inner { grid-template-columns: 1fr; gap: 32px; }
}

.breadcrumbs {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: rgba(250,248,244,0.6);
    margin-bottom: 28px;
}
.breadcrumbs a:hover { color: var(--paper); }
.breadcrumbs__sep { margin: 0 10px; color: rgba(250,248,244,0.3); }

.detail-hero__tag {
    display: inline-block;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    background: var(--accent);
    color: var(--paper);
    padding: 5px 10px;
    border-radius: var(--radius);
    margin-bottom: 20px;
}
.detail-hero__title {
    font-family: var(--serif);
    font-weight: 500;
    font-style: normal;
    font-size: clamp(36px, 5vw, 56px);
    line-height: 1;
    letter-spacing: -0.02em;
    margin: 0 0 20px;
}
.detail-hero__title .roman {
    font-style: normal;
    font-weight: 700;
}
.detail-hero__subtitle {
    font-family: var(--serif);
    font-size: clamp(17px, 1.5vw, 20px);
    line-height: 1.5;
    color: rgba(250,248,244,0.85);
    max-width: 58ch;
    margin: 0 0 28px;
}
.detail-hero__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 28px;
    font-size: 14px;
    color: rgba(250,248,244,0.75);
    margin-bottom: 20px;
}
.detail-hero__meta strong {
    color: var(--paper);
    font-weight: 600;
}
.detail-hero__meta-star { color: var(--accent); }
.detail-hero__instructor {
    font-family: var(--mono);
    font-size: 12px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(250,248,244,0.7);
}
.detail-hero__instructor strong {
    color: var(--paper);
    font-weight: 600;
}

/* Detail CTA card */
.cta-card {
    background: var(--paper);
    color: var(--ink);
    border-radius: var(--radius);
    overflow: hidden;
    align-self: start;
    box-shadow: 0 20px 60px -20px rgba(0,0,0,0.5);
}
.cta-card__cover {
    aspect-ratio: 16 / 10;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    display: none;
}
.cta-card__cover::before {
    content: "";
    position: absolute; inset: 0;
    background:
        radial-gradient(circle at 30% 20%, rgba(255,255,255,0.28), transparent 50%),
        radial-gradient(circle at 80% 90%, rgba(0,0,0,0.22), transparent 55%);
}
.cta-card__mark {
    font-family: var(--serif);
    font-style: normal;
    font-weight: 500;
    font-size: 80px;
    color: rgba(255,255,255,0.95);
    letter-spacing: -0.03em;
    position: relative;
    z-index: 1;
    text-shadow: 0 2px 20px rgba(0,0,0,0.25);
}
.cta-card__body {
    padding: 24px;
}
.cta-card__price-row {
    display: flex;
    align-items: baseline;
    gap: 12px;
    margin-bottom: 6px;
}
.cta-card__price {
    font-family: var(--serif);
    font-weight: 700;
    font-size: 36px;
    letter-spacing: -0.02em;
    color: var(--ink);
}
.cta-card__price-strike {
    font-family: var(--sans);
    font-size: 16px;
    color: var(--ink-muted);
    text-decoration: line-through;
}
.cta-card__price-note {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 20px;
}
.cta-card__btn {
    display: block;
    width: 100%;
    text-align: center;
    background: var(--ink);
    color: var(--paper);
    border: none;
    padding: 16px 20px;
    font-family: var(--sans);
    font-weight: 600;
    font-size: 15px;
    letter-spacing: 0.01em;
    border-radius: var(--radius);
    transition: background 0.2s;
    margin-bottom: 10px;
}
.cta-card__btn:hover { background: var(--accent-ink); }
.cta-card__btn-secondary {
    display: block;
    width: 100%;
    text-align: center;
    background: transparent;
    color: var(--ink);
    border: 1px solid var(--rule);
    padding: 14px 20px;
    font-family: var(--sans);
    font-weight: 500;
    font-size: 14px;
    border-radius: var(--radius);
    transition: background 0.2s;
}
.cta-card__btn-secondary:hover { background: var(--pill); }
.cta-card__features {
    list-style: none;
    padding: 20px 0 0;
    margin: 0;
    border-top: 1px solid var(--rule-soft);
    margin-top: 20px;
    font-size: 13px;
    color: var(--ink-soft);
}
.cta-card__features li {
    padding: 5px 0;
    display: flex;
    gap: 10px;
    align-items: center;
}
.cta-card__features li::before {
    content: "→";
    color: var(--accent);
    font-weight: 600;
}

/* Detail body */
.detail-body {
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 72px var(--pad-x) 120px;
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 80px;
}
@media (max-width: 960px) {
    .detail-body { grid-template-columns: 1fr; gap: 56px; padding: 56px var(--pad-x) 96px; }
}
.detail-section {
    margin-bottom: 56px;
}
.detail-section:last-child { margin-bottom: 0; }
.detail-section__label {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 16px;
}
.detail-section__title {
    font-family: var(--serif);
    font-weight: 500;
    font-style: normal;
    font-size: clamp(28px, 3vw, 40px);
    line-height: 1.05;
    letter-spacing: -0.02em;
    margin: 0 0 28px;
    color: var(--ink);
}
.detail-section__title .roman { font-style: normal; font-weight: 700; }
.detail-section__text {
    font-family: var(--serif);
    font-size: 18px;
    line-height: 1.6;
    color: var(--ink-soft);
    max-width: 64ch;
}

/* What you'll learn */
.learn-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px 28px;
    border-top: 1px solid var(--rule-soft);
    padding-top: 24px;
}
@media (max-width: 640px) { .learn-list { grid-template-columns: 1fr; } }
.learn-list li {
    display: flex;
    gap: 12px;
    font-size: 15px;
    line-height: 1.45;
    color: var(--ink-soft);
}
.learn-list li::before {
    content: "✓";
    color: var(--accent);
    font-weight: 700;
    flex-shrink: 0;
}

/* Curriculum */
.curriculum {
    list-style: none;
    padding: 0;
    margin: 0;
}
.curriculum__section {
    border-top: 1px solid var(--rule);
    padding: 24px 0;
}
.curriculum__section:last-child { border-bottom: 1px solid var(--rule); }
.curriculum__section-title {
    font-family: var(--sans);
    font-weight: 600;
    font-size: 17px;
    color: var(--ink);
    margin: 0 0 12px;
    display: flex;
    align-items: center;
    gap: 14px;
}
.curriculum__num {
    font-family: var(--mono);
    font-size: 12px;
    color: var(--ink-muted);
    font-weight: 400;
}
.curriculum__items {
    list-style: none;
    padding: 0;
    margin: 0;
}
.curriculum__items li {
    padding: 6px 0 6px 26px;
    font-size: 14px;
    color: var(--ink-soft);
    position: relative;
}
.curriculum__items li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 14px;
    width: 12px;
    height: 1px;
    background: var(--ink-muted);
}

/* Sidebar */
.detail-aside__block {
    padding: 24px;
    background: var(--card);
    border: 1px solid var(--rule-soft);
    border-radius: var(--radius);
    margin-bottom: 24px;
}
.detail-aside__label {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--ink-muted);
    margin-bottom: 12px;
}
.detail-aside__tagline {
    font-family: var(--serif);
    font-style: normal;
    font-size: 22px;
    line-height: 1.3;
    color: var(--ink);
    margin: 0;
}
.detail-aside__stat {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid var(--rule-soft);
    font-size: 14px;
}
.detail-aside__stat:last-child { border-bottom: none; }
.detail-aside__stat-key { color: var(--ink-muted); }
.detail-aside__stat-val { color: var(--ink); font-weight: 600; }

/* ----------------------------------------------------------
     FOOTER
     ---------------------------------------------------------- */
.site-footer {
    border-top: 1px solid var(--rule);
    background: var(--paper);
    padding: 56px var(--pad-x) 40px;
}
.site-footer__inner {
    max-width: var(--maxw);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 40px;
    flex-wrap: wrap;
}
.site-footer__brand-block .brand { margin-bottom: 12px; }
.site-footer__tagline {
    font-family: var(--serif);
    font-style: normal;
    font-size: 18px;
    color: var(--ink-soft);
    max-width: 32ch;
    margin: 0;
}
.site-footer__meta {
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--ink-muted);
    text-align: right;
}
.site-footer__meta a { color: var(--ink-soft); }
.site-footer__meta a:hover { color: var(--ink); }

/* Loading/empty */
.notice {
    max-width: var(--maxw);
    margin: 80px auto;
    padding: 0 var(--pad-x);
    text-align: center;
    font-family: var(--serif);
    font-style: normal;
    font-size: 22px;
    color: var(--ink-muted);
}

/* Page entrance */
@keyframes riseIn {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}
.course-card {
    animation: riseIn 0.5s cubic-bezier(0.2, 0.7, 0.2, 1) backwards;
}
.course-card:nth-child(1) { animation-delay: 0.02s; }
.course-card:nth-child(2) { animation-delay: 0.08s; }
.course-card:nth-child(3) { animation-delay: 0.14s; }
.course-card:nth-child(4) { animation-delay: 0.20s; }
.course-card:nth-child(5) { animation-delay: 0.26s; }
.course-card:nth-child(6) { animation-delay: 0.32s; }
.course-card:nth-child(n+7) { animation-delay: 0.38s; }