/* ==========================================================================
   Kodstigen – stilmall
   Ljust tema är standard. Mörkt tema används om systemet föredrar det,
   eller om användaren valt det via knappen (data-theme på <html>).
   ========================================================================== */

:root {
  --bg: #f6f7fb;
  --bg-soft: #eef0f7;
  --surface: #ffffff;
  --surface-2: #f3f5fa;
  --text: #0f172a;
  --muted: #526079;
  --border: #e1e5ee;
  --border-strong: #cbd2e0;
  --accent: #5b3df5;
  --accent-hover: #4a2ee0;
  --accent-soft: #eeeaff;
  --accent-2: #0891b2;
  --on-accent: #ffffff;
  --success: #15803d;
  --success-soft: #e8f6ed;
  --danger: #b42318;
  --danger-soft: #fdeceb;
  --warn: #8a5a00;
  --warn-soft: #fff6db;
  --info: #1d4ed8;
  --info-soft: #e9f1ff;
  --shadow-sm: 0 1px 2px rgb(15 23 42 / .06);
  --shadow: 0 1px 2px rgb(15 23 42 / .05), 0 12px 32px -14px rgb(15 23 42 / .2);
  --shadow-lg: 0 24px 60px -24px rgb(49 29 160 / .35);
  --ring: 0 0 0 3px rgb(91 61 245 / .35);
  --header-bg: rgb(246 247 251 / .8);
  --glow-1: rgb(91 61 245 / .16);
  --glow-2: rgb(8 145 178 / .14);
  --code-bg: #0e1326;
  --code-bar: #151b33;
  --code-text: #e4e8f5;
  --code-border: #1d2542;
  --icon-sun: none;
  --icon-moon: block;
  --radius: 16px;
  --radius-sm: 10px;
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Code", "JetBrains Mono", Menlo, Consolas, monospace;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #090d18;
    --bg-soft: #0d1222;
    --surface: #111729;
    --surface-2: #161d33;
    --text: #e8ebf4;
    --muted: #9ea9c2;
    --border: #232c46;
    --border-strong: #323d5e;
    --accent: #a193ff;
    --accent-hover: #b8adff;
    --accent-soft: #221d48;
    --accent-2: #38bdf8;
    --on-accent: #0b0f1c;
    --success: #4ade80;
    --success-soft: #0f2a1b;
    --danger: #f87171;
    --danger-soft: #2e1216;
    --warn: #fbbf24;
    --warn-soft: #2b2310;
    --info: #7cb4ff;
    --info-soft: #0f1d3a;
    --shadow-sm: 0 1px 2px rgb(0 0 0 / .4);
    --shadow: 0 1px 2px rgb(0 0 0 / .3), 0 12px 32px -14px rgb(0 0 0 / .6);
    --shadow-lg: 0 24px 60px -24px rgb(0 0 0 / .7);
    --ring: 0 0 0 3px rgb(161 147 255 / .45);
    --header-bg: rgb(9 13 24 / .75);
    --glow-1: rgb(161 147 255 / .16);
    --glow-2: rgb(56 189 248 / .1);
    --code-bg: #0a0f1e;
    --code-bar: #10172b;
    --code-border: #1f2843;
    --icon-sun: block;
    --icon-moon: none;
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: #090d18;
  --bg-soft: #0d1222;
  --surface: #111729;
  --surface-2: #161d33;
  --text: #e8ebf4;
  --muted: #9ea9c2;
  --border: #232c46;
  --border-strong: #323d5e;
  --accent: #a193ff;
  --accent-hover: #b8adff;
  --accent-soft: #221d48;
  --accent-2: #38bdf8;
  --on-accent: #0b0f1c;
  --success: #4ade80;
  --success-soft: #0f2a1b;
  --danger: #f87171;
  --danger-soft: #2e1216;
  --warn: #fbbf24;
  --warn-soft: #2b2310;
  --info: #7cb4ff;
  --info-soft: #0f1d3a;
  --shadow-sm: 0 1px 2px rgb(0 0 0 / .4);
  --shadow: 0 1px 2px rgb(0 0 0 / .3), 0 12px 32px -14px rgb(0 0 0 / .6);
  --shadow-lg: 0 24px 60px -24px rgb(0 0 0 / .7);
  --ring: 0 0 0 3px rgb(161 147 255 / .45);
  --header-bg: rgb(9 13 24 / .75);
  --glow-1: rgb(161 147 255 / .16);
  --glow-2: rgb(56 189 248 / .1);
  --code-bg: #0a0f1e;
  --code-bar: #10172b;
  --code-border: #1f2843;
  --icon-sun: block;
  --icon-moon: none;
  color-scheme: dark;
}

/* ---------- Grund ---------- */

*, *::before, *::after { box-sizing: border-box; }

[hidden] { display: none !important; }

html { -webkit-text-size-adjust: 100%; scroll-padding-top: 88px; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background-color .25s ease, color .25s ease;
}

main { flex: 1; outline: none; }

h1, h2, h3 { line-height: 1.2; letter-spacing: -0.02em; margin: 0 0 .5em; }
h1 { font-size: clamp(1.9rem, 1.4rem + 2vw, 2.6rem); font-weight: 800; }
h2 { font-size: 1.45rem; font-weight: 750; }
h3 { font-size: 1.1rem; font-weight: 700; }
p { margin: 0 0 1em; }

a { color: var(--accent); text-underline-offset: 3px; }
a:hover { color: var(--accent-hover); }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 6px; }

code {
  font-family: var(--mono);
  font-size: .88em;
  background: var(--surface-2);
  border: 1px solid var(--border);
  padding: .1em .4em;
  border-radius: 6px;
}

hr { border: 0; border-top: 1px solid var(--border); margin: 1.5rem 0; }

address { font-style: normal; background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 1rem 1.25rem; margin-bottom: 1em; }

.container { width: 100%; max-width: 1140px; margin: 0 auto; padding: 0 16px; }
@media (min-width: 640px) { .container { padding: 0 24px; } }

.page { padding-top: 2rem; padding-bottom: 4rem; }

.muted { color: var(--muted); }
.small { font-size: .875rem; }
.center { text-align: center; }
.narrow { max-width: 640px; margin: 3rem auto; }

.eyebrow {
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: .5rem;
}

.lead { font-size: 1.125rem; color: var(--muted); }

.visually-hidden, .hp {
  position: absolute !important;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: 16px; top: -60px;
  z-index: 100;
  background: var(--accent);
  color: var(--on-accent);
  padding: .6rem 1rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
}
.skip-link:focus { top: 12px; color: var(--on-accent); }

/* ---------- Knappar ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: .7rem 1.2rem;
  border-radius: 999px;
  border: 1px solid transparent;
  background: var(--accent);
  color: var(--on-accent);
  font: inherit;
  font-weight: 650;
  text-decoration: none;
  cursor: pointer;
  transition: background-color .15s, transform .15s, box-shadow .15s, border-color .15s;
  box-shadow: 0 6px 18px -8px var(--accent);
}
.btn:hover { background: var(--accent-hover); color: var(--on-accent); transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn:focus-visible { outline: none; box-shadow: var(--ring); }

.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border-strong);
  box-shadow: none;
}
.btn-ghost:hover { background: var(--surface-2); color: var(--text); }

.btn-light { background: #fff; color: #2a1a8f; box-shadow: none; }
.btn-light:hover { background: #f1efff; color: #2a1a8f; }

.btn-danger { background: var(--danger); color: var(--on-accent); box-shadow: none; }
.btn-danger:hover { background: var(--danger); color: var(--on-accent); filter: brightness(1.1); }

.btn-sm { padding: .45rem .9rem; font-size: .9rem; }
.btn-lg { padding: .9rem 1.5rem; font-size: 1.05rem; }
.btn-block { width: 100%; }

.icon-btn {
  display: inline-grid;
  place-items: center;
  width: 40px; height: 40px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  transition: background-color .15s, transform .2s;
}
.icon-btn:hover { background: var(--surface-2); }
.theme-toggle:active { transform: rotate(20deg); }
.icon-sun { display: var(--icon-sun); }
.icon-moon { display: var(--icon-moon); }

/* ---------- Sidhuvud ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--header-bg);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 1rem;
  min-height: 68px;
  flex-wrap: wrap;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  color: var(--text);
  text-decoration: none;
  margin-right: auto;
}
.brand:hover { color: var(--text); }
.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 34px; height: 34px;
  border-radius: 10px;
  background: linear-gradient(135deg, #6d4dff, #0ea5e9);
  color: #fff;
  font-family: var(--mono);
  font-size: .8rem;
  font-weight: 700;
}
.brand-sm { font-size: 1rem; }

.header-actions { display: flex; gap: .5rem; order: 2; }
.site-nav { display: flex; align-items: center; gap: .35rem; order: 1; }
.site-nav a:not(.btn) {
  color: var(--muted);
  text-decoration: none;
  font-weight: 550;
  padding: .45rem .75rem;
  border-radius: 999px;
}
.site-nav a:not(.btn):hover { color: var(--text); background: var(--surface-2); }
.site-nav a[aria-current="page"] { color: var(--text); background: var(--accent-soft); }
.nav-form { margin: 0 0 0 .25rem; }
.nav-toggle { display: none; }

@media (max-width: 760px) {
  .js .nav-toggle { display: inline-grid; }
  .js .site-nav {
    display: none;
    order: 3;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    padding: .5rem 0 1rem;
  }
  .js .site-nav.open { display: flex; }
  .site-nav { flex-wrap: wrap; }
  .site-nav a, .nav-form, .nav-form .btn { width: 100%; }
  .site-nav a:not(.btn) { padding: .7rem .9rem; }
  .nav-form { margin: .25rem 0 0; }
}

/* ---------- Meddelanden ---------- */

.alert {
  border-radius: var(--radius-sm);
  padding: .85rem 1rem;
  margin: 0 0 1.25rem;
  border: 1px solid;
  font-size: .95rem;
}
.alert ul { margin: 0; padding-left: 1.2rem; }
.alert-success { background: var(--success-soft); color: var(--success); border-color: color-mix(in srgb, var(--success) 30%, transparent); }
.alert-error   { background: var(--danger-soft);  color: var(--danger);  border-color: color-mix(in srgb, var(--danger) 30%, transparent); }
.alert-info    { background: var(--info-soft);    color: var(--info);    border-color: color-mix(in srgb, var(--info) 30%, transparent); }
.page > .alert, main > .alert { max-width: 1140px; margin-left: auto; margin-right: auto; }
.landing > .alert { margin: 1rem auto; width: calc(100% - 32px); max-width: 1092px; }

/* ---------- Startsida ---------- */

.hero {
  position: relative;
  overflow: hidden;
  padding: 4.5rem 0 3.5rem;
  background:
    radial-gradient(600px 300px at 15% 10%, var(--glow-1), transparent 70%),
    radial-gradient(500px 300px at 85% 30%, var(--glow-2), transparent 70%);
}
.hero-inner { display: grid; gap: 3rem; align-items: center; }
@media (min-width: 900px) { .hero-inner { grid-template-columns: 1.1fr 1fr; } }
.hero h1 { font-size: clamp(2.2rem, 1.5rem + 3vw, 3.5rem); }
.gradient-text {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-cta { display: flex; gap: .75rem; flex-wrap: wrap; margin-top: 1.75rem; }

.window {
  background: var(--code-bg);
  border: 1px solid var(--code-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  transform: rotate(1deg);
}
.window-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: .7rem 1rem;
  background: var(--code-bar);
  border-bottom: 1px solid var(--code-border);
}
.window-bar span { width: 11px; height: 11px; border-radius: 50%; background: #ff5f57; }
.window-bar span:nth-child(2) { background: #febc2e; }
.window-bar span:nth-child(3) { background: #28c840; }
.window-bar em { margin-left: .75rem; font-style: normal; font-family: var(--mono); font-size: .8rem; color: #8f9abb; }
.window pre { margin: 0; padding: 1.25rem 1.4rem; overflow-x: auto; }
.window code { background: none; border: 0; padding: 0; color: var(--code-text); font-size: .92rem; line-height: 1.7; }

.section { padding-top: 3rem; padding-bottom: 3rem; }
.section-head { margin-bottom: 1.5rem; }
.section-title { margin-top: 2.5rem; }

.features { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); }
.feature {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
}
.feature h2 { font-size: 1.1rem; }
.feature p { color: var(--muted); margin: 0; }
.feature-icon {
  display: grid;
  place-items: center;
  width: 44px; height: 44px;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 1rem;
}

.cta-panel {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 2.5rem;
  border-radius: calc(var(--radius) + 8px);
  background: linear-gradient(120deg, #4b2fe0, #6d4dff 45%, #0e8fc2);
  color: #fff;
  box-shadow: var(--shadow-lg);
}
.cta-panel h2 { color: #fff; }
.cta-panel p { margin: 0; color: rgb(255 255 255 / .88); }

/* ---------- Kurser ---------- */

.course-grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }

.course-card {
  display: flex;
  flex-direction: column;
  gap: .25rem;
  padding: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  text-decoration: none;
  box-shadow: var(--shadow-sm);
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.course-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: var(--border-strong); color: var(--text); }
.course-card h3 { margin: .75rem 0 .25rem; }
.course-card p { color: var(--muted); margin: 0; font-size: .95rem; }
.course-card .meta { margin-top: auto; padding-top: 1rem; font-size: .85rem; font-weight: 600; }
.course-card .progress-row { margin-top: auto; padding-top: 1rem; }

.badge-lang {
  display: inline-grid;
  place-items: center;
  width: 46px; height: 46px;
  flex: none;
  border-radius: 12px;
  font-family: var(--mono);
  font-weight: 800;
  font-size: .9rem;
  background: var(--c, var(--accent));
  color: var(--c-text, #fff);
}
.badge-lg { width: 56px; height: 56px; font-size: 1rem; border-radius: 14px; }
.badge-xl { width: 76px; height: 76px; font-size: 1.3rem; border-radius: 20px; }
.accent-python     { --c: #3572a5; --c-text: #fff; }
.accent-java       { --c: #c2410c; --c-text: #fff; }
.accent-javascript { --c: #f0d31c; --c-text: #1a1a1a; }
.accent-html-css   { --c: #d6451f; --c-text: #fff; }
.accent-sql        { --c: #0e7c86; --c-text: #fff; }
.accent-done       { --c: linear-gradient(135deg, #f59e0b, #ef4444); }

.progress-row { display: flex; align-items: center; gap: .75rem; }
.progress-row.wide { max-width: 420px; }
.progress {
  -webkit-appearance: none;
  appearance: none;
  flex: 1;
  height: 8px;
  border: 0;
  border-radius: 999px;
  background: var(--surface-2);
  overflow: hidden;
}
.progress::-webkit-progress-bar { background: var(--surface-2); border-radius: 999px; }
.progress::-webkit-progress-value { background: linear-gradient(90deg, var(--accent), var(--accent-2)); border-radius: 999px; }
.progress::-moz-progress-bar { background: linear-gradient(90deg, var(--accent), var(--accent-2)); border-radius: 999px; }

/* ---------- Översikt ---------- */

.page-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}
.page-head h1 { margin-bottom: .25rem; }
.page-head p { margin: 0; }

.stat-ring {
  --p: 0;
  position: relative;
  display: grid;
  place-items: center;
  align-content: center;
  width: 108px; height: 108px;
  border-radius: 50%;
  background: conic-gradient(var(--accent) calc(var(--p) * 1%), var(--surface-2) 0);
}
.stat-ring::before {
  content: "";
  position: absolute;
  inset: 9px;
  border-radius: 50%;
  background: var(--bg);
}
.stat-ring span, .stat-ring small { position: relative; }
.stat-ring span { font-size: 1.5rem; font-weight: 800; line-height: 1; }
.stat-ring small { color: var(--muted); font-size: .75rem; }

.continue-card {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 1.5rem;
  border-radius: var(--radius);
  background:
    radial-gradient(400px 160px at 0% 0%, var(--glow-1), transparent 70%),
    var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  color: var(--text);
  text-decoration: none;
  transition: transform .2s, box-shadow .2s;
}
a.continue-card:hover { transform: translateY(-2px); color: var(--text); }
.continue-card h2 { margin: 0 0 .15rem; font-size: 1.3rem; }
.continue-card p { margin: 0; }
.continue-card .eyebrow { margin-bottom: .25rem; }
.continue-card .arrow { margin-left: auto; font-size: 1.5rem; color: var(--accent); transition: transform .2s; }
.continue-card:hover .arrow { transform: translateX(4px); }

/* ---------- Kurssida ---------- */

.breadcrumbs { font-size: .9rem; color: var(--muted); margin-bottom: 1.5rem; }
.breadcrumbs a { color: var(--muted); }
.breadcrumbs a:hover { color: var(--text); }

.course-hero { display: flex; gap: 1.5rem; align-items: flex-start; margin-bottom: 2rem; flex-wrap: wrap; }
.course-hero > div { flex: 1; min-width: 240px; }

.lesson-list { list-style: none; margin: 0; padding: 0; display: grid; gap: .75rem; }
.lesson-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.1rem 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  text-decoration: none;
  transition: border-color .15s, transform .15s, box-shadow .15s;
}
.lesson-item:hover { border-color: var(--accent); color: var(--text); box-shadow: var(--shadow-sm); transform: translateX(2px); }
.lesson-body { display: flex; flex-direction: column; flex: 1; min-width: 0; }
.lesson-num {
  display: grid;
  place-items: center;
  width: 38px; height: 38px;
  flex: none;
  border-radius: 50%;
  background: var(--surface-2);
  border: 1px solid var(--border);
  font-weight: 700;
}
.lesson-item.is-done .lesson-num { background: var(--success-soft); color: var(--success); border-color: transparent; }
.lesson-meta { flex: none; }

.pill {
  display: inline-block;
  padding: .15rem .6rem;
  border-radius: 999px;
  font-size: .78rem;
  font-weight: 700;
}
.pill-success { background: var(--success-soft); color: var(--success); }

/* ---------- Lektion ---------- */

.lesson-layout { display: grid; gap: 2rem; grid-template-columns: minmax(0, 1fr); }
.lesson, .lesson-sidebar { min-width: 0; }
@media (min-width: 960px) { .lesson-layout { grid-template-columns: 260px minmax(0, 1fr); align-items: start; } }

.lesson-sidebar {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
}
@media (min-width: 960px) { .lesson-sidebar { position: sticky; top: 88px; } }
.sidebar-head { display: flex; gap: .75rem; align-items: center; padding: .25rem .25rem 1rem; border-bottom: 1px solid var(--border); margin-bottom: .75rem; }
.sidebar-head > div { display: flex; flex-direction: column; line-height: 1.3; }
.sidebar-lessons { list-style: none; margin: 0; padding: 0; display: grid; gap: .15rem; }
.sidebar-lessons a {
  display: flex;
  gap: .65rem;
  align-items: center;
  padding: .55rem .6rem;
  border-radius: var(--radius-sm);
  color: var(--muted);
  text-decoration: none;
  font-size: .93rem;
  line-height: 1.35;
}
.sidebar-lessons a:hover { background: var(--surface-2); color: var(--text); }
.sidebar-lessons a[aria-current="page"] { background: var(--accent-soft); color: var(--text); font-weight: 650; }
.sidebar-lessons .dot {
  display: grid;
  place-items: center;
  width: 24px; height: 24px;
  flex: none;
  border-radius: 50%;
  border: 1px solid var(--border-strong);
  font-size: .75rem;
  font-weight: 700;
}
.sidebar-lessons a.is-done .dot { background: var(--success); border-color: var(--success); color: var(--surface); }

.lesson { max-width: 760px; }
.lesson-head { margin-bottom: 2rem; }

.prose { font-size: 1.05rem; }
.prose h2 { margin-top: 2.25rem; font-size: 1.35rem; }
.prose ul { padding-left: 1.25rem; margin: 0 0 1.25em; }
.prose li { margin-bottom: .4em; }
.prose li::marker { color: var(--accent); }

.code-block {
  margin: 1.25rem 0 1.5rem;
  background: var(--code-bg);
  border: 1px solid var(--code-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.code-block figcaption {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: .4rem .5rem .4rem 1rem;
  background: var(--code-bar);
  border-bottom: 1px solid var(--code-border);
  color: #97a2c2;
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .03em;
}
.copy-btn {
  font: inherit;
  color: #c9d1ea;
  background: transparent;
  border: 1px solid #2b3556;
  border-radius: 6px;
  padding: .2rem .6rem;
  cursor: pointer;
}
.copy-btn:hover { background: #1c2542; }
.code-block pre { margin: 0; padding: 1rem 1.1rem; overflow-x: auto; }
.code-block code, .window code {
  background: none;
  border: 0;
  padding: 0;
  color: var(--code-text);
  font-size: .9rem;
  line-height: 1.65;
  tab-size: 4;
}

/* Syntaxfärger (alltid mörk bakgrund) */
.tok-kw   { color: #c792ea; }
.tok-str  { color: #c3e88d; }
.tok-num  { color: #f78c6c; }
.tok-com  { color: #7c88a8; font-style: italic; }
.tok-fn   { color: #82aaff; }
.tok-type { color: #ffcb6b; }
.tok-tag  { color: #f07178; }
.tok-attr { color: #ffcb6b; }
.tok-prop { color: #89ddff; }
.tok-lit  { color: #ff9cac; }

.callout {
  margin: 1.5rem 0;
  padding: 1rem 1.25rem;
  border-radius: var(--radius-sm);
  border-left: 4px solid;
}
.callout strong { display: block; margin-bottom: .2rem; font-size: .8rem; text-transform: uppercase; letter-spacing: .06em; }
.callout p { margin: 0; }
.callout-tip  { background: var(--info-soft); border-color: var(--info); }
.callout-tip strong { color: var(--info); }
.callout-warn { background: var(--warn-soft); border-color: var(--warn); }
.callout-warn strong { color: var(--warn); }

.table-wrap { overflow-x: auto; margin: 1rem 0 1.5rem; border: 1px solid var(--border); border-radius: var(--radius-sm); }
table { width: 100%; border-collapse: collapse; font-size: .95rem; background: var(--surface); }
th, td { text-align: left; padding: .6rem .9rem; border-bottom: 1px solid var(--border); vertical-align: top; }
th { background: var(--surface-2); font-weight: 700; }
tbody tr:last-child td { border-bottom: 0; }

.quiz {
  margin-top: 3rem;
  padding: 1.75rem;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.quiz-head { display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; }
.quiz-head h2 { margin: 0; }
.quiz-question { font-weight: 600; font-size: 1.05rem; margin: 1rem 0; }
.quiz fieldset { border: 0; padding: 0; margin: 0 0 1.25rem; display: grid; gap: .6rem; }
.option {
  display: flex;
  align-items: center;
  gap: .8rem;
  padding: .85rem 1rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: border-color .15s, background-color .15s;
}
.option:hover { border-color: var(--border-strong); background: var(--surface-2); }
.option:has(input:checked) { border-color: var(--accent); background: var(--accent-soft); }
.option input { width: 18px; height: 18px; accent-color: var(--accent); margin: 0; flex: none; }
.option.is-correct { border-color: var(--success); background: var(--success-soft); }
.option.is-wrong { border-color: var(--danger); background: var(--danger-soft); }

.lesson-nav { display: flex; justify-content: space-between; gap: 1rem; margin-top: 2rem; flex-wrap: wrap; }

/* ---------- Formulär ---------- */

.auth { display: grid; place-items: center; padding: 1rem 0 2rem; }
.auth-card {
  width: 100%;
  max-width: 460px;
  padding: 2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius) + 4px);
  box-shadow: var(--shadow);
}
@media (max-width: 480px) { .auth-card { padding: 1.4rem; } }
.auth-card h1 { font-size: 1.75rem; }
.auth-switch { text-align: center; margin: 1.5rem 0 0; color: var(--muted); }

.form { display: grid; gap: 1.1rem; }
.field { display: grid; gap: .35rem; }
.field label, .label-row label { font-weight: 600; font-size: .95rem; }
.label-row { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; }
.hint { margin: 0; font-size: .85rem; color: var(--muted); }

input[type="text"], input[type="email"], input[type="password"] {
  width: 100%;
  padding: .75rem .9rem;
  font: inherit;
  color: var(--text);
  background: var(--bg);
  border: 1.5px solid var(--border-strong);
  border-radius: var(--radius-sm);
  transition: border-color .15s, box-shadow .15s;
}
input:focus { outline: none; border-color: var(--accent); box-shadow: var(--ring); }

.check { display: flex; gap: .7rem; align-items: flex-start; font-size: .95rem; }
.check input { width: 18px; height: 18px; margin-top: .2rem; accent-color: var(--accent); flex: none; }

/* ---------- Konto ---------- */

.settings { display: grid; gap: 1.25rem; }
@media (min-width: 900px) { .settings { grid-template-columns: 1fr 1fr; align-items: start; } }
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
}
.card h2 { font-size: 1.2rem; }
.card-danger { border-color: color-mix(in srgb, var(--danger) 40%, var(--border)); }
.card-danger h2 { color: var(--danger); }

/* ---------- Juridiska sidor ---------- */

.legal { max-width: 780px; margin: 0 auto; }
.legal h2 { margin-top: 2.25rem; }

/* ---------- Sidfot ---------- */

.site-footer { border-top: 1px solid var(--border); background: var(--bg-soft); padding: 2rem 0; }
.footer-inner { display: grid; gap: 1.25rem; }
@media (min-width: 760px) { .footer-inner { grid-template-columns: 1fr auto; align-items: start; } }
.footer-inner p { margin: .5rem 0 0; }
.footer-links { display: flex; flex-wrap: wrap; gap: .5rem 1.25rem; }
.footer-links a { color: var(--muted); text-decoration: none; font-size: .92rem; }
.footer-links a:hover { color: var(--text); text-decoration: underline; }
.copyright { grid-column: 1 / -1; }

/* ---------- Rörelse ---------- */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
  .window { transform: none; }
}

/* ---------- Discord ---------- */

.btn-discord { background: #5865f2; color: #fff; box-shadow: 0 6px 18px -8px #5865f2; }
.btn-discord:hover { background: #4752c4; color: #fff; }
.auth-card .btn-discord { margin: .5rem 0 0; }

.divider {
  display: flex;
  align-items: center;
  gap: .75rem;
  margin: 1.25rem 0;
  color: var(--muted);
  font-size: .85rem;
}
.divider::before, .divider::after { content: ""; flex: 1; border-top: 1px solid var(--border); }

.link-btn {
  font: inherit;
  color: var(--muted);
  background: none;
  border: 0;
  padding: 0;
  text-decoration: underline;
  text-underline-offset: 3px;
  cursor: pointer;
}
.link-btn:hover { color: var(--text); }

/* ---------- Kodövningar ---------- */

.lesson-checklist { list-style: none; padding: 0; margin: 1rem 0 0; display: flex; flex-wrap: wrap; gap: .5rem; }
.lesson-checklist li {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .3rem .8rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  font-size: .88rem;
  color: var(--muted);
}
.lesson-checklist li.is-done { color: var(--success); background: var(--success-soft); border-color: transparent; font-weight: 600; }

.exercise {
  margin-top: 3rem;
  padding: 1.75rem;
  border-radius: var(--radius);
  background:
    radial-gradient(500px 180px at 100% 0%, var(--glow-2), transparent 70%),
    var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}
@media (max-width: 480px) { .exercise, .quiz { padding: 1.1rem; } }
.exercise-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 1rem; }
.exercise-head h2 { margin: 0; }
.exercise-head .eyebrow { margin-bottom: .3rem; }
.exercise-prompt { margin-top: 1rem; }
.exercise-prompt p:last-child { margin-bottom: .75rem; }

.editor-wrap {
  margin-top: .75rem;
  border: 1px solid var(--code-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--code-bg);
}
.editor-wrap:focus-within { box-shadow: var(--ring); border-color: var(--accent); }
.editor-label {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding: .45rem 1rem;
  background: var(--code-bar);
  border-bottom: 1px solid var(--code-border);
  color: #97a2c2;
  font-size: .78rem;
  font-weight: 600;
}
.editor-label .small { font-weight: 400; font-size: .75rem; }
.code-editor {
  display: block;
  width: 100%;
  min-height: 240px;
  resize: vertical;
  margin: 0;
  padding: 1rem 1.1rem;
  border: 0;
  outline: none;
  background: transparent;
  color: var(--code-text);
  caret-color: #fff;
  font-family: var(--mono);
  font-size: .9rem;
  line-height: 1.65;
  tab-size: 4;
  white-space: pre;
  overflow: auto;
}
.code-editor::selection { background: rgb(130 170 255 / .35); }

.exercise-actions { display: flex; flex-wrap: wrap; align-items: center; gap: .6rem; margin-top: 1rem; }
.exercise-actions .btn[disabled] { opacity: .6; cursor: wait; transform: none; }
.exercise-status { flex-basis: 100%; min-height: 1.4em; }
@media (min-width: 760px) { .exercise-status { flex-basis: auto; margin-left: .5rem; } }
#ex-hint, #ex-solution { margin-top: 1rem; }

.exercise-results { display: grid; gap: 1rem; margin-top: 1.25rem; }
@media (min-width: 900px) { .exercise-results:has([data-output-block]:not([hidden])) { grid-template-columns: 1fr 1fr; } }
.results-block h3, .preview-block h3 { font-size: .8rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin: 0 0 .5rem; }
.test-list { list-style: none; margin: 0; padding: 0; display: grid; gap: .4rem; }
.test-list li {
  padding: .6rem .8rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg);
  font-size: .93rem;
}
.test-list .test-mark { display: inline-block; width: 1.4em; font-weight: 800; }
.test-ok { border-color: color-mix(in srgb, var(--success) 35%, var(--border)) !important; }
.test-ok .test-mark { color: var(--success); }
.test-fail .test-mark { color: var(--danger); }
.test-error {
  white-space: pre-wrap;
  font-family: var(--mono);
  font-size: .85rem !important;
  color: var(--danger);
  background: var(--danger-soft) !important;
  border-color: transparent !important;
}
.test-detail { margin: .35rem 0 0 1.4em; color: var(--muted); font-size: .85rem; white-space: pre-wrap; font-family: var(--mono); }

.output {
  margin: 0;
  padding: .9rem 1rem;
  min-height: 3rem;
  max-height: 320px;
  overflow: auto;
  background: var(--code-bg);
  color: var(--code-text);
  border: 1px solid var(--code-border);
  border-radius: var(--radius-sm);
  font-family: var(--mono);
  font-size: .85rem;
  line-height: 1.55;
  white-space: pre;
}

.preview-block { margin-top: 1.25rem; }
.runner-frame { display: block; width: 100%; height: 260px; border: 1px solid var(--border); border-radius: var(--radius-sm); background: #fff; }
.preview-block[hidden] { display: block !important; position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

.lesson-complete { margin-top: 2rem; }
.sidebar-lessons .sidebar-level {
  margin: .75rem .6rem .25rem;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--muted);
}
.sidebar-lessons .sidebar-level:first-child { margin-top: .1rem; }
.pill-level { background: var(--surface-2); color: var(--muted); }
.pill-intermediate { background: var(--info-soft); color: var(--info); }
.pill-advanced { background: var(--accent-soft); color: var(--accent); }
.editor-label label { font-weight: 600; cursor: text; }
.save-state { font-weight: 400; color: #8f9abb; }
