/* ============================================================
   learn.pixelr.cloud — Main Stylesheet
   Design: Dark-first, AWS-cloud aesthetic
   Fonts: Space Grotesk (display) + Inter (body)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Inter:wght@300;400;500;600&family=JetBrains+Mono:wght@400;500&display=swap');

/* ── Tokens ───────────────────────────────────────────────── */
:root {
  --bg:          #0d1117;
  --bg-card:     #161b22;
  --bg-elevated: #1c2128;
  --border:      #30363d;
  --text:        #e6edf3;
  --text-muted:  #7d8590;
  --text-faint:  #484f58;
  --accent:      #f78166;
  --accent-2:    #58a6ff;
  --accent-green:#3fb950;
  --accent-gold: #e3b341;

  --ff-display: 'Space Grotesk', sans-serif;
  --ff-body:    'Inter', sans-serif;
  --ff-mono:    'JetBrains Mono', monospace;

  --r:    6px;
  --r-lg: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,.4);
  --transition: 0.18s ease;
}

[data-theme="light"] {
  --bg:          #f6f8fa;
  --bg-card:     #ffffff;
  --bg-elevated: #f0f3f6;
  --border:      #d0d7de;
  --text:        #1f2328;
  --text-muted:  #656d76;
  --text-faint:  #9198a1;
  --accent:      #cf222e;
  --accent-2:    #0969da;
  --accent-green:#1a7f37;
  --accent-gold: #9a6700;
}

/* ── Reset ────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--ff-body);
  font-size: 1rem;
  line-height: 1.6;
  min-height: 100vh;
  transition: background var(--transition), color var(--transition);
}
img { max-width: 100%; display: block; }
a { color: var(--accent-2); text-decoration: none; transition: opacity var(--transition); }
a:hover { opacity: .8; }
button { font-family: var(--ff-body); cursor: pointer; }
ul, ol { list-style: none; }

/* ── Typography ───────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 { font-family: var(--ff-display); line-height: 1.25; color: var(--text); }
h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 700; letter-spacing: -.03em; }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); font-weight: 600; letter-spacing: -.02em; }
h3 { font-size: 1.25rem; font-weight: 600; }
p { color: var(--text-muted); }
code, pre {
  font-family: var(--ff-mono);
  font-size: .875em;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: .15em .4em;
}
pre { padding: 1.25rem; overflow-x: auto; }
pre code { background: none; border: none; padding: 0; }

/* ── Layout ───────────────────────────────────────────────── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }
.container--narrow { max-width: 800px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }

/* ── Navbar ───────────────────────────────────────────────── */
.navbar {
  position: sticky; top: 0; z-index: 100;
  background: rgba(13,17,23,.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: .875rem 0;
  transition: background var(--transition);
}
[data-theme="light"] .navbar { background: rgba(246,248,250,.92); }
.navbar__inner {
  display: flex; align-items: center; gap: 1rem;
  max-width: 1200px; margin: 0 auto; padding: 0 1.5rem;
}
.navbar__logo { word-spacing: 0; letter-spacing: 0;
  font-family: var(--ff-display);
  font-weight: 700; font-size: 1.1rem;
  color: var(--text) !important;
  display: flex; align-items: center; gap: .5rem;
}
.navbar__logo span.accent { color: var(--accent); }
.navbar__links {
  display: flex; align-items: center; gap: .25rem;
  margin-left: 1.5rem;
}
.navbar__links a {
  color: var(--text-muted) !important;
  padding: .4rem .75rem;
  border-radius: var(--r);
  font-size: .9rem;
  font-weight: 500;
  transition: background var(--transition), color var(--transition);
}
.navbar__links a:hover, .navbar__links a.active {
  background: var(--bg-elevated);
  color: var(--text) !important;
  opacity: 1;
}
.navbar__right { margin-left: auto; display: flex; align-items: center; gap: .75rem; }

/* ── Theme Toggle ─────────────────────────────────────────── */
.theme-toggle {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: .3rem .5rem;
  display: flex; align-items: center;
  font-size: .85rem; color: var(--text-muted);
  gap: .35rem;
  transition: background var(--transition);
}
.theme-toggle:hover { background: var(--border); }

/* ── Buttons ──────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  padding: .55rem 1.25rem;
  border-radius: var(--r);
  font-size: .9rem; font-weight: 500;
  border: none;
  transition: all var(--transition);
  cursor: pointer;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover { filter: brightness(1.1); opacity: 1; color: #fff; }
.btn-secondary {
  background: var(--bg-elevated);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover { background: var(--border); opacity: 1; color: var(--text); }
.btn-outline {
  background: transparent;
  color: var(--accent-2);
  border: 1px solid var(--accent-2);
}
.btn-outline:hover { background: var(--accent-2); color: #fff; opacity: 1; }
.btn-sm { padding: .35rem .85rem; font-size: .8rem; }
.btn-lg { padding: .75rem 1.75rem; font-size: 1rem; }
.btn-icon { padding: .5rem; }
.btn-google {
  background: #fff; color: #1f2328;
  border: 1px solid #d0d7de;
  gap: .75rem; font-size: 1rem;
  padding: .75rem 1.75rem;
  box-shadow: var(--shadow);
}
.btn-google:hover { background: #f6f8fa; opacity: 1; color: #1f2328; }

/* ── Cards ────────────────────────────────────────────────── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}
.card:hover {
  border-color: var(--text-faint);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,.25);
}
.card__thumb { width: 100%; height: 200px; object-fit: cover; background: var(--bg-elevated); }
.card__body { padding: 1.25rem; }
.card__meta {
  display: flex; align-items: center; gap: .75rem;
  font-size: .78rem; color: var(--text-muted); margin-bottom: .6rem;
}
.card__title {
  font-family: var(--ff-display);
  font-weight: 600; font-size: 1.05rem; margin-bottom: .5rem;
  color: var(--text); line-height: 1.3;
}
.card__excerpt { font-size: .875rem; color: var(--text-muted); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.card__footer { padding: .9rem 1.25rem; border-top: 1px solid var(--border); display: flex; align-items: center; gap: .75rem; }

/* ── Badges / Tags ────────────────────────────────────────── */
.badge {
  display: inline-flex; align-items: center;
  padding: .2rem .6rem;
  border-radius: 20px;
  font-size: .72rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: .04em;
}
.badge-ec2   { background: rgba(247,129,102,.15); color: #f78166; }
.badge-vpc   { background: rgba(88,166,255,.15);  color: #58a6ff; }
.badge-s3    { background: rgba(63,185,80,.15);   color: #3fb950; }
.badge-docker{ background: rgba(88,166,255,.15);  color: #58a6ff; }
.badge-iam   { background: rgba(227,179,65,.15);  color: #e3b341; }
.badge-efs   { background: rgba(163,113,247,.15); color: #a371f7; }
.badge-alb   { background: rgba(247,129,102,.15); color: #f78166; }
.badge-terraform { background: rgba(163,113,247,.15); color: #a371f7; }
.badge-default { background: var(--bg-elevated); color: var(--text-muted); }
.badge-admin { background: rgba(247,129,102,.2); color: var(--accent); }

/* ── Hero ─────────────────────────────────────────────────── */
.hero {
  padding: 6rem 0 4rem;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute; top: -200px; right: -200px;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(247,129,102,.08) 0%, transparent 70%);
  pointer-events: none;
}
.hero__eyebrow {
  display: inline-flex; align-items: center; gap: .5rem;
  font-size: .8rem; font-weight: 600; text-transform: uppercase;
  letter-spacing: .08em; color: var(--accent);
  border: 1px solid rgba(247,129,102,.3);
  padding: .3rem .8rem; border-radius: 20px;
  margin-bottom: 1.5rem;
}
.hero__eyebrow::before {
  content: ''; width: 6px; height: 6px;
  background: var(--accent); border-radius: 50%;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: .4; transform: scale(.7); }
}
.hero__title { margin-bottom: 1rem; }
.hero__title .highlight {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-gold) 100%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero__sub { font-size: 1.15rem; color: var(--text-muted); max-width: 560px; margin-bottom: 2rem; }
.hero__actions { display: flex; gap: 1rem; flex-wrap: wrap; }

/* ── Section headers ──────────────────────────────────────── */
.section { padding: 4rem 0; }
.section-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 2rem; padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}
.section-header h2 { font-size: 1.5rem; }
.section-eyebrow {
  font-size: .75rem; font-weight: 600; text-transform: uppercase;
  letter-spacing: .08em; color: var(--accent-2);
  margin-bottom: .4rem;
}

/* ── Filter Pills ─────────────────────────────────────────── */
.filter-bar { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 2rem; }
.filter-pill {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: .35rem .9rem;
  font-size: .82rem; font-weight: 500; color: var(--text-muted);
  transition: all var(--transition); cursor: pointer;
}
.filter-pill:hover, .filter-pill.active {
  background: var(--accent); border-color: var(--accent);
  color: #fff;
}

/* ── Search ───────────────────────────────────────────────── */
.search-wrap {
  position: relative; max-width: 440px; margin-bottom: 2rem;
}
.search-wrap input {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: .65rem 1rem .65rem 2.75rem;
  color: var(--text); font-family: var(--ff-body); font-size: .9rem;
  transition: border-color var(--transition);
}
.search-wrap input:focus { outline: none; border-color: var(--accent-2); }
.search-wrap .search-icon {
  position: absolute; left: .9rem; top: 50%; transform: translateY(-50%);
  color: var(--text-muted); pointer-events: none;
}

/* ── Blog Post Content ────────────────────────────────────── */
.post-content { line-height: 1.8; color: var(--text-muted); }
.post-content h2 { color: var(--text); margin: 2.5rem 0 1rem; font-size: 1.65rem; }
.post-content h3 { color: var(--text); margin: 2rem 0 .75rem; }
.post-content p  { margin-bottom: 1.25rem; }
.post-content ul, .post-content ol { margin: 1rem 0 1.25rem 1.5rem; }
.post-content li { margin-bottom: .5rem; list-style: disc; }
.post-content ol li { list-style: decimal; }
.post-content pre { margin: 1.5rem 0; }
.post-content img { border-radius: var(--r-lg); margin: 1.5rem 0; border: 1px solid var(--border); }
.post-content blockquote {
  border-left: 3px solid var(--accent);
  padding: .75rem 1.25rem; margin: 1.5rem 0;
  background: var(--bg-elevated); border-radius: 0 var(--r) var(--r) 0;
}

/* ── Reading Progress Bar ────────────────────────────────── */
#reading-progress {
  position: fixed; top: 0; left: 0; z-index: 200;
  height: 3px; width: 0;
  background: linear-gradient(90deg, var(--accent), var(--accent-gold));
  transition: width .1s linear;
}

/* ── Course Layout ────────────────────────────────────────── */
.course-layout { display: grid; grid-template-columns: 280px 1fr; gap: 2rem; align-items: start; }
.course-sidebar {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--r-lg); overflow: hidden;
  position: sticky; top: 80px;
}
.course-sidebar__header {
  padding: 1rem 1.25rem; border-bottom: 1px solid var(--border);
  font-weight: 600; font-family: var(--ff-display); font-size: .95rem;
}
.module-item {
  display: flex; align-items: flex-start; gap: .75rem;
  padding: .85rem 1.25rem; border-bottom: 1px solid var(--border);
  cursor: pointer; transition: background var(--transition);
}
.module-item:hover { background: var(--bg-elevated); }
.module-item.active { background: rgba(247,129,102,.08); border-left: 3px solid var(--accent); }
.module-item.completed .module-icon { color: var(--accent-green); }
.module-icon { flex-shrink: 0; margin-top: .15rem; }
.module-title { font-size: .85rem; font-weight: 500; color: var(--text); }
.module-meta  { font-size: .75rem; color: var(--text-muted); margin-top: .1rem; }

.video-wrap {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--r-lg); overflow: hidden;
}
.video-embed { position: relative; padding-bottom: 56.25%; }
.video-embed iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: none; }
.video-lock {
  position: absolute; inset: 0;
  background: rgba(13,17,23,.9); backdrop-filter: blur(4px);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 1rem;
  color: var(--text);
}

/* ── Progress Bar ─────────────────────────────────────────── */
.progress-bar {
  background: var(--bg-elevated); border-radius: 20px;
  height: 8px; overflow: hidden; margin: .5rem 0;
}
.progress-fill {
  height: 100%; border-radius: 20px;
  background: linear-gradient(90deg, var(--accent-2), var(--accent-green));
  transition: width .5s ease;
}

/* ── Forms ────────────────────────────────────────────────── */
.form-group { margin-bottom: 1.25rem; }
.form-label { display: block; font-size: .875rem; font-weight: 500; margin-bottom: .5rem; color: var(--text); }
.form-control {
  width: 100%;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: .65rem 1rem;
  color: var(--text); font-family: var(--ff-body); font-size: .9rem;
  transition: border-color var(--transition);
}
.form-control:focus { outline: none; border-color: var(--accent-2); }
.form-control::placeholder { color: var(--text-faint); }
textarea.form-control { resize: vertical; min-height: 120px; }
select.form-control { cursor: pointer; }

/* ── Newsletter ───────────────────────────────────────────── */
.newsletter {
  background: linear-gradient(135deg, var(--bg-elevated) 0%, rgba(88,166,255,.05) 100%);
  border: 1px solid var(--border); border-radius: var(--r-lg);
  padding: 3rem; text-align: center; margin: 3rem 0;
}
.newsletter h2 { margin-bottom: .75rem; }
.newsletter p { margin-bottom: 1.75rem; }
.newsletter-form { display: flex; gap: .75rem; max-width: 460px; margin: 0 auto; }
.newsletter-form input {
  flex: 1; background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--r); padding: .65rem 1rem;
  color: var(--text); font-family: var(--ff-body); font-size: .9rem;
}
.newsletter-form input:focus { outline: none; border-color: var(--accent-2); }

/* ── Admin Panel ──────────────────────────────────────────── */
.admin-layout { display: grid; grid-template-columns: 220px 1fr; gap: 2rem; align-items: start; }
.admin-sidebar {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--r-lg); position: sticky; top: 80px; overflow: hidden;
}
.admin-nav-item {
  display: flex; align-items: center; gap: .75rem;
  padding: .85rem 1.25rem; font-size: .875rem; font-weight: 500;
  color: var(--text-muted); border-bottom: 1px solid var(--border);
  cursor: pointer; transition: background var(--transition), color var(--transition);
}
.admin-nav-item:hover { background: var(--bg-elevated); color: var(--text); }
.admin-nav-item.active { background: rgba(247,129,102,.1); color: var(--accent); }
.admin-panel { display: none; }
.admin-panel.active { display: block; }
.stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-bottom: 2rem; }
.stat-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: 1.5rem;
}
.stat-card__num { font-family: var(--ff-display); font-size: 2rem; font-weight: 700; color: var(--text); }
.stat-card__label { font-size: .82rem; color: var(--text-muted); margin-top: .25rem; }

/* ── Toast ────────────────────────────────────────────────── */
#toast-container { position: fixed; bottom: 2rem; right: 2rem; z-index: 1000; display: flex; flex-direction: column; gap: .5rem; }
.toast {
  background: var(--bg-elevated); border: 1px solid var(--border);
  border-radius: var(--r); padding: .75rem 1.25rem;
  font-size: .875rem; font-weight: 500; color: var(--text);
  box-shadow: 0 8px 24px rgba(0,0,0,.3);
  animation: slideIn .25s ease;
  display: flex; align-items: center; gap: .5rem;
}
.toast.success { border-left: 3px solid var(--accent-green); }
.toast.error   { border-left: 3px solid var(--accent); }
.toast.info    { border-left: 3px solid var(--accent-2); }
@keyframes slideIn { from { opacity: 0; transform: translateX(20px); } to { opacity: 1; transform: none; } }

/* ── Footer ───────────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--border); padding: 3rem 0 2rem;
  margin-top: 4rem;
}
.footer__grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem; margin-bottom: 2.5rem;
}
.footer__col h4 {
  font-size: .8rem; font-weight: 600; text-transform: uppercase;
  letter-spacing: .08em; color: var(--text); margin-bottom: 1rem;
}
.footer__col a { display: block; color: var(--text-muted); font-size: .875rem; margin-bottom: .5rem; }
.footer__col a:hover { color: var(--text); opacity: 1; }
.footer__brand { font-family: var(--ff-display); font-size: 1.15rem; font-weight: 700; color: var(--text); margin-bottom: .75rem; }
.footer__brand span { color: var(--accent); }
.footer__desc { font-size: .875rem; color: var(--text-muted); line-height: 1.6; }
.footer__bottom {
  padding-top: 1.5rem; border-top: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  font-size: .8rem; color: var(--text-muted);
}

/* ── Login Page ───────────────────────────────────────────── */
.login-page {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  padding: 2rem;
  background: radial-gradient(ellipse at 60% 20%, rgba(247,129,102,.07) 0%, transparent 55%),
              radial-gradient(ellipse at 20% 80%, rgba(88,166,255,.06) 0%, transparent 55%),
              var(--bg);
}
.login-box {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: 3rem; width: 100%; max-width: 440px;
  text-align: center;
}
.login-box__logo { font-family: var(--ff-display); font-size: 1.5rem; font-weight: 700; margin-bottom: .5rem; }
.login-box__logo span { color: var(--accent); }
.login-box__sub { color: var(--text-muted); font-size: .9rem; margin-bottom: 2rem; }
.login-divider {
  display: flex; align-items: center; gap: 1rem; margin: 1.5rem 0;
  font-size: .8rem; color: var(--text-faint);
}
.login-divider::before, .login-divider::after {
  content: ''; flex: 1; height: 1px; background: var(--border);
}
.benefits-list { text-align: left; margin: 1.75rem 0; }
.benefits-list li {
  display: flex; align-items: flex-start; gap: .75rem;
  font-size: .875rem; color: var(--text-muted); margin-bottom: .7rem;
}
.benefits-list li::before {
  content: '✓'; color: var(--accent-green); font-weight: 700; flex-shrink: 0;
}

/* ── Empty state ──────────────────────────────────────────── */
.empty-state {
  text-align: center; padding: 4rem 2rem;
  border: 2px dashed var(--border); border-radius: var(--r-lg);
}
.empty-state__icon { font-size: 3rem; margin-bottom: 1rem; }
.empty-state p { color: var(--text-muted); margin-top: .5rem; }

/* ── Spinner ──────────────────────────────────────────────── */
.spinner {
  width: 36px; height: 36px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin .7s linear infinite;
  margin: 3rem auto;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Skeleton loaders ─────────────────────────────────────── */
.skeleton {
  background: linear-gradient(90deg, var(--bg-elevated) 25%, var(--border) 50%, var(--bg-elevated) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.6s infinite;
  border-radius: var(--r);
}
@keyframes shimmer { from { background-position: 200% 0; } to { background-position: -200% 0; } }

/* ── Utility ──────────────────────────────────────────────── */
.text-accent   { color: var(--accent) !important; }
.text-muted    { color: var(--text-muted) !important; }
.text-center   { text-align: center; }
.mt-1 { margin-top: .5rem; } .mt-2 { margin-top: 1rem; } .mt-3 { margin-top: 1.5rem; } .mt-4 { margin-top: 2rem; }
.mb-1 { margin-bottom: .5rem; } .mb-2 { margin-bottom: 1rem; } .mb-3 { margin-bottom: 1.5rem; } .mb-4 { margin-bottom: 2rem; }
.flex { display: flex; } .flex-center { display: flex; align-items: center; } .gap-1 { gap: .5rem; } .gap-2 { gap: 1rem; }
.d-none { display: none !important; }
.hr { border: none; border-top: 1px solid var(--border); margin: 2rem 0; }

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 1024px) {
  .course-layout    { grid-template-columns: 1fr; }
  .course-sidebar   { position: static; }
  .admin-layout     { grid-template-columns: 1fr; }
  .footer__grid     { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .grid-2, .grid-3  { grid-template-columns: 1fr; }
  .stats-grid       { grid-template-columns: 1fr; }
  .navbar__links    { display: none; }
  .newsletter       { padding: 2rem 1.25rem; }
  .newsletter-form  { flex-direction: column; }
  .footer__grid     { grid-template-columns: 1fr; }
  .hero             { padding: 4rem 0 3rem; }
  h1                { font-size: 2rem; }
}

/* ── Editor (Quill) overrides ─────────────────────────────── */
.ql-toolbar { background: var(--bg-elevated) !important; border-color: var(--border) !important; border-radius: var(--r) var(--r) 0 0 !important; }
.ql-container { background: var(--bg-elevated) !important; border-color: var(--border) !important; border-radius: 0 0 var(--r) var(--r) !important; min-height: 300px; }
.ql-editor { color: var(--text) !important; font-family: var(--ff-body) !important; }
.ql-stroke { stroke: var(--text-muted) !important; }
.ql-fill   { fill:   var(--text-muted) !important; }

/* ═══════════════════════════════════════════════
   GLOBAL MOBILE OPTIMISATIONS (appended)
═══════════════════════════════════════════════ */

/* Container padding on small screens */
@media (max-width: 640px) {
  .container { padding: 0 1rem; }
  .section { padding: 2rem 0; }

  /* Nav: compact */
  .navbar__inner { padding: 0 1rem; }
  .navbar__logo { font-size: .95rem; }

  /* Cards: single column */
  .grid-3, .grid-2 { grid-template-columns: 1fr !important; gap: 1rem; }

  /* Card thumb smaller on mobile */
  .card__thumb { height: 160px; }

  /* Filter bar horizontal scroll */
  .filter-bar {
    flex-wrap: nowrap !important;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    gap: .4rem;
    padding-bottom: .35rem;
  }
  .filter-bar::-webkit-scrollbar { display: none; }
  .filter-pill { white-space: nowrap; flex-shrink: 0; font-size: .8rem; padding: .3rem .75rem; }

  /* Newsletter stacked */
  .newsletter-form { flex-direction: column; gap: .75rem; }
  .newsletter-form input, .newsletter-form button { width: 100%; }
  .newsletter h2 { font-size: 1.35rem; }

  /* Admin: full-width sidebar on mobile */
  .admin-layout { grid-template-columns: 1fr !important; }
  .admin-sidebar { position: static; }
  .stats-grid { grid-template-columns: 1fr 1fr !important; gap: .75rem; }
  .editor-layout { grid-template-columns: 1fr !important; }
  .editor-sidebar-col { position: static !important; }
  .admin-topbar { display: none !important; }

  /* Post: full bleed content */
  .post-content pre { font-size: .78rem; }
  .post-content table { display: block; overflow-x: auto; }

  /* Toast at bottom */
  #toast-container { bottom: 1rem; right: 1rem; left: 1rem; }

  /* Course layout */
  .course-layout { grid-template-columns: 1fr !important; }
}

@media (min-width: 641px) and (max-width: 900px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr) !important; }
  .stats-grid { grid-template-columns: repeat(2, 1fr) !important; }
  .course-layout { grid-template-columns: 1fr !important; }
  .editor-layout { grid-template-columns: 1fr !important; }
  .editor-sidebar-col { position: static !important; }
}

/* ── Admin panel layout on mobile ── */
@media (max-width: 768px) {
  .admin-layout { grid-template-columns: 1fr !important; gap: 1rem; }
  .admin-sidebar { margin-bottom: 1rem; }

  /* Horizontal scrollable nav on mobile */
  .admin-sidebar > div {
    display: flex;
    flex-wrap: nowrap;
    overflow-x: auto;
    padding: .35rem;
    gap: .25rem;
  }
  .admin-sidebar-section { display: none; }
  .admin-nav-item {
    white-space: nowrap;
    flex-shrink: 0;
    border-radius: 999px;
    padding: .4rem .85rem;
    font-size: .8rem;
  }
  .admin-nav-item .nav-badge { display: none; }

  /* Posts table: hide less important cols */
  .posts-table th:nth-child(4),
  .posts-table td:nth-child(4) { display: none; }
  .posts-table th:nth-child(5),
  .posts-table td:nth-child(5) { display: none; }

  /* Media grid smaller */
  .media-grid { grid-template-columns: repeat(3, 1fr) !important; }

  /* Module form: single col */
  #module-form > div[style*="grid"] { display: flex !important; flex-direction: column; }
}

/* Focus styles for accessibility */
:focus-visible {
  outline: 2px solid var(--accent-2);
  outline-offset: 2px;
}

/* Smooth scroll */
html { scroll-behavior: smooth; }

/* ═══════════════════════════════════════════════
   MOBILE NAV — hamburger + drawer
═══════════════════════════════════════════════ */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--r);
  width: 36px;
  height: 36px;
  padding: 6px;
  cursor: pointer;
  flex-shrink: 0;
}
.hamburger span {
  display: block;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all .25s ease;
  transform-origin: center;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  display: none;
  flex-direction: column;
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  padding: .5rem 0 1rem;
  position: absolute;
  top: 100%;
  left: 0; right: 0;
  z-index: 999;
  box-shadow: 0 8px 24px rgba(0,0,0,.35);
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  padding: .85rem 1.5rem;
  font-size: .95rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: background var(--transition), color var(--transition);
}
.mobile-menu a:hover { background: var(--bg-elevated); color: var(--text); }
.mobile-menu a.active { color: var(--accent); }

/* Show hamburger, hide desktop links on small screens */
@media (max-width: 720px) {
  .hamburger { display: flex; }
  #nav-desktop-links { display: none !important; }
  .navbar__right { gap: .4rem; }
  /* Hide sign-in button in desktop right — it's in the mobile drawer */
  #nav-login { display: none !important; }
  #nav-user .admin-only { display: none !important; }
}

/* ── Index page course spotlight: collapse on mobile ── */
@media (max-width: 768px) {
  .course-spotlight-grid {
    grid-template-columns: 1fr !important;
    gap: 2rem !important;
  }
}

/* ── Footer: single col on mobile ── */
@media (max-width: 640px) {
  .footer__grid { grid-template-columns: 1fr !important; gap: 1.5rem; }
  .footer__col h4 { margin-bottom: .5rem; }
  .footer__bottom { flex-direction: column; gap: .5rem; text-align: center; }
}

/* ── Admin grid layout class ── */
.admin-layout {
  display: grid;
  gap: 2rem;
  align-items: start;
}

/* ── Share overlay close on mobile drag ── */
.share-overlay { touch-action: none; }

/* ── Post action bar: wrap gracefully ── */
@media (max-width: 480px) {
  .post-actions { border-radius: var(--r-lg); width: 100%; justify-content: space-between; }
  .action-btn { flex: 1; justify-content: center; }
}