/* ==========================================================================
   Uncodemy Course Content Pages — Shared Stylesheet
   Theme: Orange (#FF5421) / White, Poppins headings, Inter body
   ========================================================================== */

:root {
  --primary: #FF5421;
  --primary-dark: #E6461A;
  --primary-light: #FFF1EC;
  --primary-soft: #FFE4D9;
  --ink: #1E2129;
  --ink-soft: #5B6270;
  --border: #ECE9E6;
  --bg: #F9F8F6;
  --white: #FFFFFF;
  --shadow-sm: 0 2px 8px rgba(30, 33, 41, 0.06);
  --shadow-md: 0 8px 24px rgba(30, 33, 41, 0.08);
  --shadow-lg: 0 16px 40px rgba(255, 84, 33, 0.14);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 22px;
  --font-head: 'Poppins', sans-serif;
  --font-body: 'Inter', sans-serif;
  --container-max: 1440px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  animation: pageFadeIn 0.5s ease both;
}

@keyframes pageFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

h1, h2, h3, h4 {
  font-family: var(--font-head);
  color: var(--ink);
  line-height: 1.25;
  margin: 0 0 0.6em;
}

p { line-height: 1.75; color: var(--ink-soft); margin: 0 0 1.1em; }

a { color: var(--primary); text-decoration: none; }

img { max-width: 100%; display: block; }

ul { color: var(--ink-soft); line-height: 1.75; }

/* ---------------- Top bar ---------------- */
.topbar {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.topbar-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 14px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo img { height: 34px; width: auto; }

.back-to-course {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 9px 18px;
  border-radius: 999px;
  border: 1px solid var(--primary-soft);
  transition: all 0.2s ease;
  white-space: nowrap;
}

.back-to-course:hover {
  background: var(--primary);
  color: var(--white);
  transform: translateY(-1px);
}

/* ---------------- Breadcrumb ---------------- */
.breadcrumb {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 18px 28px 0;
  font-size: 0.85rem;
  color: var(--ink-soft);
}

.breadcrumb a { color: var(--ink-soft); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { margin: 0 6px; color: #C9C5C0; }
.breadcrumb .current { color: var(--primary); font-weight: 600; }

/* ---------------- Page shell / 3-column layout ---------------- */
.page-shell {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 20px 28px 64px;
  display: grid;
  grid-template-columns: 270px minmax(0, 1fr) 300px;
  gap: 28px;
  align-items: start;
}

/* ---------------- Left sidebar ---------------- */
.sidebar-left {
  position: sticky;
  top: 84px;
  background: var(--white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  padding: 18px;
  max-height: calc(100vh - 104px);
  overflow-y: auto;
}

.sidebar-left h4 {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 12px;
  padding: 0 6px;
}

.topic-list { list-style: none; margin: 0; padding: 0; }

.topic-list li { margin-bottom: 4px; }

.topic-list a {
  display: block;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  color: var(--ink);
  font-weight: 500;
  transition: background 0.15s ease, color 0.15s ease;
}

.topic-list a:hover { background: var(--primary-light); color: var(--primary); }

.topic-list a.active {
  background: var(--primary);
  color: var(--white);
  font-weight: 600;
  box-shadow: var(--shadow-sm);
}

/* ---------------- Main content ---------------- */
.main-content { min-width: 0; }

.content-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 44px;
  box-shadow: var(--shadow-sm);
}

.content-card h1 {
  font-size: 2rem;
  border-left: 5px solid var(--primary);
  padding-left: 16px;
  margin-bottom: 0.8em;
}

.content-card h2 {
  font-size: 1.3rem;
  margin-top: 1.6em;
  color: var(--primary-dark);
}

.content-card .lead {
  font-size: 1.05rem;
  color: var(--ink);
  background: var(--primary-light);
  border: 1px solid var(--primary-soft);
  padding: 16px 20px;
  border-radius: var(--radius-sm);
}

.content-card blockquote {
  margin: 20px 0;
  padding: 14px 20px;
  border-left: 4px solid var(--primary);
  background: var(--bg);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--ink-soft);
  font-style: italic;
}

/* Prev/Next nav */
.page-nav {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 28px;
}

.page-nav a {
  flex: 1;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  font-size: 0.85rem;
  color: var(--ink-soft);
  box-shadow: var(--shadow-sm);
  transition: all 0.2s ease;
}

.page-nav a:hover { border-color: var(--primary); box-shadow: var(--shadow-lg); }
.page-nav a .dir { display: block; font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--primary); font-weight: 700; margin-bottom: 4px; }
.page-nav a.next { text-align: right; }
.page-nav .spacer { flex: 1; }

/* CTA box at bottom */
.cta-box {
  margin-top: 32px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border-radius: var(--radius-lg);
  padding: 32px 36px;
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
  box-shadow: var(--shadow-lg);
}

.cta-box h3 { color: var(--white); margin-bottom: 4px; }
.cta-box p { color: rgba(255,255,255,0.88); margin: 0; }

.cta-btn {
  background: var(--white);
  color: var(--primary);
  font-weight: 700;
  padding: 12px 26px;
  border-radius: 999px;
  white-space: nowrap;
  transition: transform 0.2s ease;
}

.cta-btn:hover { transform: scale(1.05); }

/* ---------------- Right sidebar ---------------- */
.sidebar-right {
  position: sticky;
  top: 84px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.rs-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 22px;
}

.rs-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--primary-light);
  color: var(--primary-dark);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 6px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
  animation: floaty 3s ease-in-out infinite;
}

@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-4px); }
}

.rs-card h3 { font-size: 1.1rem; margin-bottom: 2px; }
.rs-course-name { color: var(--primary); font-weight: 700; font-size: 1rem; margin-bottom: 14px; }

.rs-meta { font-size: 0.85rem; color: var(--ink-soft); margin-bottom: 6px; }
.rs-meta strong { color: var(--ink); }

/* Countdown */
.countdown {
  display: flex;
  gap: 8px;
  margin: 16px 0;
}

.countdown .unit {
  flex: 1;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  text-align: center;
  padding: 8px 4px;
}

.countdown .unit .num {
  font-family: var(--font-head);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--primary);
  display: block;
}

.countdown .unit .lbl {
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-soft);
}

.rs-features { list-style: none; padding: 0; margin: 14px 0 0; }
.rs-features li {
  font-size: 0.85rem;
  color: var(--ink-soft);
  padding: 6px 0;
  border-top: 1px dashed var(--border);
  display: flex;
  align-items: center;
  gap: 8px;
}
.rs-features li:first-child { border-top: none; }

.seats-badge {
  display: block;
  text-align: center;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--primary-dark);
  background: var(--primary-soft);
  padding: 7px;
  border-radius: 999px;
  margin-bottom: 12px;
}

.rs-full-btn {
  display: block;
  width: 100%;
  text-align: center;
  background: var(--primary);
  color: var(--white);
  font-weight: 700;
  padding: 14px;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  transition: transform 0.2s ease, background 0.2s ease;
  font-size: 0.95rem;
  font-family: var(--font-body);
}

.rs-full-btn:hover { transform: scale(1.03); background: var(--primary-dark); }

.rs-help-title { font-size: 0.95rem; margin-bottom: 4px; }
.rs-phone { font-weight: 700; color: var(--ink); margin: 8px 0; font-size: 0.95rem; }

.rs-whatsapp {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  background: #25D366;
  color: var(--white);
  font-weight: 700;
  padding: 12px;
  border-radius: var(--radius-sm);
  transition: transform 0.2s ease;
  font-size: 0.9rem;
}

.rs-whatsapp:hover { transform: scale(1.03); }

/* ---------------- Footer ---------------- */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--white);
  padding: 22px 28px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--ink-soft);
}

.site-footer a { color: var(--primary); font-weight: 600; }

/* ---------------- Responsive ---------------- */
@media (max-width: 1180px) {
  .page-shell {
    grid-template-columns: 240px minmax(0, 1fr);
  }
  .sidebar-right {
    grid-column: 1 / -1;
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
  }
  .sidebar-right .rs-card { flex: 1 1 260px; }
}

@media (max-width: 860px) {
  .page-shell { grid-template-columns: 1fr; }
  .sidebar-left {
    position: static;
    max-height: none;
    order: 2;
  }
  .main-content { order: 1; }
  .sidebar-right { order: 3; flex-direction: column; }
  .content-card { padding: 28px 22px; }
}

@media (max-width: 560px) {
  .topbar-inner { padding: 12px 16px; }
  .breadcrumb { padding: 14px 16px 0; }
  .page-shell { padding: 14px 16px 40px; gap: 18px; }
  .content-card { padding: 22px 18px; border-radius: var(--radius-md); }
  .content-card h1 { font-size: 1.5rem; }
  .cta-box { flex-direction: column; text-align: center; padding: 26px 22px; }
  .page-nav { flex-direction: column; }
  .page-nav a.next { text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}