/* =====================================================================
   EduFlow — Online Courses Template
   Author: EduFlow Template
   ---------------------------------------------------------------------
   REBRAND TIP: To recolor the whole site, edit the CSS variables in the
   :root block below. --primary drives buttons, links & accents;
   --accent drives the highlight/CTA color. Swap the font names too if
   you change the Google Fonts <link> in index.html.
   ===================================================================== */

:root {
  /* ---- Brand colors (EDIT THESE TO REBRAND) ---- */
  --primary:        #4f46e5;   /* indigo  */
  --primary-dark:   #4338ca;
  --primary-light:  #6366f1;
  --accent:         #f59e0b;   /* amber   */
  --accent-dark:    #d97706;

  /* ---- Neutrals & surfaces ---- */
  --bg:        #ffffff;
  --bg-alt:    #f5f5ff;        /* soft indigo-tinted alt background */
  --ink:       #1e1b2e;        /* dark ink text */
  --ink-soft:  #5b576b;        /* muted body text */
  --line:      #ebe9f7;        /* hairline borders */
  --white:     #ffffff;

  /* ---- Typography ---- */
  --font-head: "Poppins", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;

  /* ---- Shape & depth ---- */
  --radius:     16px;
  --radius-lg:  24px;
  --radius-pill:999px;
  --shadow-sm:  0 2px 8px rgba(30, 27, 46, 0.06);
  --shadow-md:  0 12px 30px rgba(79, 70, 229, 0.10);
  --shadow-lg:  0 24px 60px rgba(79, 70, 229, 0.16);

  /* ---- Layout ---- */
  --maxw: 1180px;
  --gutter: 24px;
  --header-h: 74px;

  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===================== RESET & BASE ===================== */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 16px); }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--font-head);
  line-height: 1.18;
  margin: 0 0 0.5em;
  color: var(--ink);
  letter-spacing: -0.01em;
}

p { margin: 0 0 1em; color: var(--ink-soft); }

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

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

ul { list-style: none; margin: 0; padding: 0; }

.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ===================== BUTTONS ===================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 12px 24px;
  border-radius: var(--radius-pill);
  border: none;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition),
    background var(--transition), color var(--transition);
  white-space: nowrap;
  text-decoration: none;
}
.btn:hover { transform: translateY(-2px); }

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: var(--white);
  box-shadow: var(--shadow-md);
}
.btn-primary:hover { box-shadow: var(--shadow-lg); color: var(--white); }

.btn-accent {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: #2a1b00;
  box-shadow: 0 12px 30px rgba(245, 158, 11, 0.30);
}
.btn-accent:hover { color: #2a1b00; }

.btn-ghost {
  background: var(--bg-alt);
  color: var(--primary);
  padding: 9px 18px;
  font-size: 0.88rem;
}
.btn-ghost:hover { background: var(--primary); color: var(--white); }

/* ===================== HEADER ===================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
}

.logo { display: inline-flex; align-items: center; gap: 8px; font-family: var(--font-head); }
.logo-mark { font-size: 1.5rem; }
.logo-text { font-weight: 800; font-size: 1.3rem; color: var(--ink); }
.logo-text span { color: var(--primary); }

.main-nav { display: flex; align-items: center; gap: 32px; }
.main-nav ul { display: flex; gap: 28px; }
.main-nav ul a {
  color: var(--ink-soft);
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
}
.main-nav ul a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -6px;
  width: 0; height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: width var(--transition);
}
.main-nav ul a:hover { color: var(--ink); }
.main-nav ul a:hover::after { width: 100%; }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.hamburger span {
  width: 26px; height: 3px;
  background: var(--ink);
  border-radius: 3px;
  transition: transform var(--transition), opacity var(--transition);
}
.hamburger.open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* ===================== HERO ===================== */
.hero {
  position: relative;
  padding: clamp(48px, 8vw, 96px) 0;
  background: linear-gradient(180deg, var(--bg-alt) 0%, var(--bg) 100%);
  overflow: hidden;
}
.hero-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.45;
  z-index: 0;
}
.hero-blob-1 {
  width: 380px; height: 380px;
  background: radial-gradient(circle, var(--primary-light), transparent 70%);
  top: -120px; right: -80px;
}
.hero-blob-2 {
  width: 320px; height: 320px;
  background: radial-gradient(circle, var(--accent), transparent 70%);
  bottom: -140px; left: -100px;
}
.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 56px;
  align-items: center;
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 0.82rem;
  color: var(--primary);
  background: rgba(79, 70, 229, 0.08);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 18px;
}

.hero h1 { font-size: clamp(2.1rem, 5vw, 3.4rem); font-weight: 800; }
.grad-text {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-sub { font-size: 1.1rem; max-width: 520px; }

/* Search bar */
.search-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  padding: 8px 8px 8px 18px;
  box-shadow: var(--shadow-sm);
  max-width: 520px;
  margin-top: 10px;
}
.search-bar .search-icon { font-size: 1.1rem; opacity: 0.6; }
.search-bar input {
  flex: 1;
  border: none;
  outline: none;
  font-family: var(--font-body);
  font-size: 1rem;
  background: transparent;
  color: var(--ink);
  min-width: 0;
}
.search-bar input::placeholder { color: #a8a4bd; }

.search-tags { font-size: 0.88rem; margin-top: 14px; }
.search-tags a { font-weight: 500; }

/* Hero stats */
.hero-stats { display: flex; gap: 40px; margin-top: 34px; }
.stat { display: flex; flex-direction: column; }
.stat-num { font-family: var(--font-head); font-weight: 800; font-size: 1.9rem; color: var(--ink); }
.stat-label { font-size: 0.85rem; color: var(--ink-soft); }

/* Hero visual */
.hero-visual { position: relative; min-height: 380px; }
.hero-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--line);
}
.hero-card-main {
  overflow: hidden;
  max-width: 360px;
  margin-inline: auto;
}
.hero-thumb {
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
}
.thumb-a { background: linear-gradient(135deg, #6366f1, #06b6d4); }
.hero-card-body { padding: 20px 22px 24px; }
.hero-card-body h3 { font-size: 1.1rem; }

.hero-card-float {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
}
.hero-card-float .float-emoji { font-size: 1.6rem; }
.hero-card-float strong { display: block; font-family: var(--font-head); font-size: 0.95rem; }
.hero-card-float small { color: var(--ink-soft); font-size: 0.78rem; }
.float-1 { top: 20px; left: -10px; animation: floaty 4s ease-in-out infinite; }
.float-2 { bottom: 16px; right: -10px; animation: floaty 4s ease-in-out infinite 1.5s; }

@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

/* ===================== RATINGS & TAGS ===================== */
.rating { display: flex; align-items: center; gap: 6px; font-size: 0.85rem; }
.rating .stars { color: var(--accent); letter-spacing: 1px; }
.rating .rating-num { font-weight: 700; color: var(--ink); }
.rating .muted, .muted { color: var(--ink-soft); }
.rating.small { font-size: 0.8rem; }

.tag {
  display: inline-block;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 0.72rem;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.tag-dev      { background: #e0f2fe; color: #0369a1; }
.tag-design   { background: #ede9fe; color: #6d28d9; }
.tag-marketing{ background: #fef3c7; color: #b45309; }
.tag-business { background: #dcfce7; color: #15803d; }
.tag-photo    { background: #fce7f3; color: #be185d; }
.tag-music    { background: #f3e8ff; color: #9333ea; }

/* ===================== SECTIONS ===================== */
.section { padding: clamp(56px, 8vw, 90px) 0; }
.section-alt { background: var(--bg-alt); }

.section-head { text-align: center; max-width: 640px; margin: 0 auto 48px; }
.section-head h2 { font-size: clamp(1.7rem, 3.5vw, 2.4rem); font-weight: 700; }
.section-sub { font-size: 1.05rem; }

/* ===================== CATEGORIES ===================== */
.category-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.category-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.category-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}
.cat-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px; height: 64px;
  font-size: 1.8rem;
  border-radius: 18px;
  margin-bottom: 16px;
  background: linear-gradient(135deg, var(--c1), var(--c2));
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.10);
}
.category-card h3 { font-size: 1.15rem; margin-bottom: 2px; }
.category-card p { margin: 0; font-size: 0.88rem; }

/* ===================== COURSES ===================== */
.course-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.course-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
}
.course-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }

.course-thumb {
  height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.4rem;
}
/* Gradient thumbnails (no image files) */
.grad-1 { background: linear-gradient(135deg, #6366f1, #8b5cf6); }
.grad-2 { background: linear-gradient(135deg, #3b82f6, #06b6d4); }
.grad-3 { background: linear-gradient(135deg, #f59e0b, #f97316); }
.grad-4 { background: linear-gradient(135deg, #10b981, #22c55e); }
.grad-5 { background: linear-gradient(135deg, #ec4899, #f43f5e); }
.grad-6 { background: linear-gradient(135deg, #8b5cf6, #d946ef); }

.course-body { padding: 20px 22px 22px; display: flex; flex-direction: column; flex: 1; }
.course-body h3 { font-size: 1.1rem; margin-bottom: 6px; }
.instructor { font-size: 0.85rem; margin-bottom: 8px; }
.course-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 16px;
}
.price { font-family: var(--font-head); font-weight: 800; font-size: 1.3rem; color: var(--primary); }

/* ===================== FEATURES ===================== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 30px 26px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 58px; height: 58px;
  font-size: 1.6rem;
  border-radius: 16px;
  margin-bottom: 18px;
  background: linear-gradient(135deg, var(--c1), var(--c2));
}
.feature-card h3 { font-size: 1.15rem; }
.feature-card p { margin: 0; font-size: 0.92rem; }

/* ===================== INSTRUCTORS ===================== */
.instructor-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.instructor-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 30px 24px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}
.instructor-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.avatar {
  width: 76px; height: 76px;
  border-radius: 50%;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.4rem;
  color: var(--white);
}
.instructor-card h3 { font-size: 1.1rem; margin-bottom: 2px; }
.instructor-card p { margin: 0 0 8px; font-size: 0.88rem; }
.instructor-card .rating.small { justify-content: center; }

/* ===================== HOW IT WORKS ===================== */
.steps {
  display: flex;
  align-items: stretch;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
}
.step {
  flex: 1;
  min-width: 220px;
  max-width: 320px;
  text-align: center;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 36px 28px 30px;
  position: relative;
  box-shadow: var(--shadow-sm);
}
.step-num {
  position: absolute;
  top: -18px; left: 50%;
  transform: translateX(-50%);
  width: 38px; height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: var(--white);
  font-family: var(--font-head);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
}
.step-icon { font-size: 2.4rem; display: block; margin: 8px 0 14px; }
.step h3 { font-size: 1.2rem; }
.step p { margin: 0; font-size: 0.92rem; }
.step-line {
  flex: 0 0 56px;
  align-self: center;
  height: 2px;
  background: repeating-linear-gradient(90deg, var(--primary-light) 0 8px, transparent 8px 16px);
  opacity: 0.5;
  margin: 0 4px;
}

/* ===================== TESTIMONIALS ===================== */
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.testimonial-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px 26px;
  box-shadow: var(--shadow-sm);
  margin: 0;
  transition: transform var(--transition), box-shadow var(--transition);
}
.testimonial-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.testimonial-card blockquote {
  margin: 12px 0 20px;
  font-size: 1rem;
  color: var(--ink);
  line-height: 1.7;
}
.testimonial-card figcaption {
  display: flex;
  align-items: center;
  gap: 12px;
}
.avatar-sm {
  width: 44px; height: 44px;
  font-size: 0.9rem;
  margin: 0;
}
.testimonial-card figcaption strong { display: block; font-family: var(--font-head); font-size: 0.95rem; }
.testimonial-card figcaption small { color: var(--ink-soft); font-size: 0.82rem; }

/* ===================== CTA BAND ===================== */
.cta-band {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
  color: var(--white);
  padding: clamp(56px, 8vw, 90px) 0;
  text-align: center;
}
.cta-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.35;
}
.cta-blob-1 { width: 300px; height: 300px; background: var(--accent); top: -80px; left: -60px; }
.cta-blob-2 { width: 280px; height: 280px; background: #a855f7; bottom: -90px; right: -50px; }
.cta-inner { position: relative; z-index: 1; max-width: 640px; }
.cta-band h2 { color: var(--white); font-size: clamp(1.8rem, 4vw, 2.6rem); }
.cta-band p { color: rgba(255, 255, 255, 0.88); font-size: 1.08rem; }

.signup-form {
  display: flex;
  gap: 10px;
  max-width: 480px;
  margin: 26px auto 12px;
}
.signup-form input {
  flex: 1;
  border: none;
  border-radius: var(--radius-pill);
  padding: 14px 20px;
  font-family: var(--font-body);
  font-size: 1rem;
  outline: none;
  min-width: 0;
}
.cta-fine { font-size: 0.85rem; color: rgba(255, 255, 255, 0.75); margin: 0; }
.form-msg { margin: 10px 0 0; font-weight: 600; min-height: 1.4em; }
.form-msg.show { color: #fff8e1; }

/* ===================== FOOTER ===================== */
.site-footer {
  background: #14112a;
  color: #b9b4d0;
  padding: 64px 0 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer-brand .logo-text { color: var(--white); }
.footer-brand p { max-width: 320px; margin-top: 12px; font-size: 0.92rem; }
.socials { display: flex; gap: 12px; margin-top: 16px; }
.socials a {
  width: 38px; height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 50%;
  font-size: 1.05rem;
  transition: background var(--transition), transform var(--transition);
}
.socials a:hover { background: var(--primary); transform: translateY(-3px); }

.footer-col h4 { color: var(--white); font-size: 1rem; margin-bottom: 16px; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { color: #b9b4d0; font-size: 0.92rem; }
.footer-col a:hover { color: var(--white); }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}
.footer-bottom p { margin: 0; font-size: 0.85rem; }

/* ===================== SCROLL REVEAL ===================== */
/* Default = hidden; .is-visible reveals. The .no-js fallback (set by JS
   when IntersectionObserver is unavailable) shows everything. */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
  will-change: opacity, transform;
}
.reveal.is-visible { opacity: 1; transform: none; }
.no-js .reveal { opacity: 1; transform: none; }

/* Stagger children within a grid for a nicer cascade */
.category-grid .reveal.is-visible,
.course-grid .reveal.is-visible,
.feature-grid .reveal.is-visible,
.instructor-grid .reveal.is-visible { transition-delay: var(--delay, 0s); }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .float-1, .float-2 { animation: none; }
  html { scroll-behavior: auto; }
}

/* ===================== RESPONSIVE ===================== */
@media (max-width: 992px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { order: -1; max-width: 420px; margin-inline: auto; }
  .category-grid,
  .course-grid,
  .testimonial-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-grid,
  .instructor-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 768px) {
  /* Mobile nav */
  .hamburger { display: flex; }
  .main-nav {
    position: fixed;
    top: var(--header-h);
    right: 0;
    height: calc(100vh - var(--header-h));
    width: min(80vw, 320px);
    background: var(--white);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 28px;
    box-shadow: -10px 0 40px rgba(0, 0, 0, 0.12);
    transform: translateX(110%);
    transition: transform var(--transition);
    overflow-y: auto;
  }
  .main-nav.open { transform: translateX(0); }
  .main-nav ul { flex-direction: column; gap: 4px; width: 100%; }
  .main-nav ul li { width: 100%; }
  .main-nav ul a { display: block; padding: 12px 0; font-size: 1.05rem; }
  .nav-cta { margin-top: 16px; width: 100%; }

  .hero-stats { gap: 28px; }
  .steps { flex-direction: column; align-items: center; gap: 36px; }
  .step-line { display: none; }
}

@media (max-width: 560px) {
  .category-grid,
  .course-grid,
  .feature-grid,
  .instructor-grid,
  .testimonial-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .search-bar { flex-wrap: wrap; border-radius: var(--radius); padding: 12px; }
  .search-bar .btn { width: 100%; }
  .signup-form { flex-direction: column; }
  .signup-form .btn { width: 100%; }
  .hero-stats { flex-wrap: wrap; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* =====================================================================
   MULTI-PAGE ADDITIONS
   Appended for courses / course detail / instructors / about / contact.
   ===================================================================== */

/* ---- Active nav state ---- */
.main-nav ul a.active { color: var(--ink); font-weight: 600; }
.main-nav ul a.active::after { width: 100%; }

/* ===================== PAGE BANNER + BREADCRUMB ===================== */
.page-banner {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, var(--bg-alt) 0%, var(--bg) 100%);
  padding: clamp(48px, 7vw, 84px) 0 clamp(40px, 6vw, 64px);
  text-align: center;
}
.page-banner .hero-blob { z-index: 0; }
.page-banner-inner { position: relative; z-index: 1; max-width: 720px; margin-inline: auto; }
.page-banner h1 { font-size: clamp(2rem, 4.5vw, 3rem); font-weight: 800; margin-bottom: 12px; }
.page-banner p { font-size: 1.08rem; max-width: 560px; margin-inline: auto; }

.breadcrumb {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.85rem;
  font-family: var(--font-head);
  font-weight: 500;
  margin-bottom: 16px;
  color: var(--ink-soft);
}
.breadcrumb a { color: var(--primary); }
.breadcrumb span[aria-hidden] { opacity: 0.5; }
.breadcrumb .current { color: var(--ink-soft); }

/* ===================== FILTER BAR (courses.html) ===================== */
.filter-bar {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr auto;
  gap: 12px;
  align-items: center;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 16px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 40px;
}
.filter-field { display: flex; flex-direction: column; gap: 4px; }
.filter-field label {
  font-family: var(--font-head);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
}
.filter-bar input[type="text"],
.filter-bar select {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--ink);
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  padding: 11px 16px;
  outline: none;
  width: 100%;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.filter-bar input[type="text"]:focus,
.filter-bar select:focus { border-color: var(--primary-light); box-shadow: 0 0 0 3px rgba(99,102,241,0.15); }
.filter-bar .btn { align-self: end; }

.results-count { margin-bottom: 22px; font-size: 0.9rem; }
.no-results {
  display: none;
  text-align: center;
  padding: 48px 20px;
  background: var(--bg-alt);
  border-radius: var(--radius-lg);
  font-size: 1.05rem;
}

/* Course card extras for the catalog grid */
.course-card .course-thumb { position: relative; }
.course-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 0.8rem;
  color: var(--ink-soft);
  margin: 4px 0 2px;
}
.course-meta span { display: inline-flex; align-items: center; gap: 4px; }
.course-card .course-body h3 a { color: var(--ink); }
.course-card .course-body h3 a:hover { color: var(--primary); }

/* ===================== PAGINATION ===================== */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-top: 48px;
}
.pagination a, .pagination span {
  min-width: 42px;
  height: 42px;
  padding: 0 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line);
  background: var(--white);
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--ink-soft);
  transition: all var(--transition);
}
.pagination a:hover { border-color: var(--primary-light); color: var(--primary); transform: translateY(-2px); }
.pagination .current {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: var(--white);
  border-color: transparent;
}
.pagination .dots { border: none; background: none; }

/* ===================== COURSE DETAIL (course.html) ===================== */
.course-hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-light));
  color: var(--white);
  padding: clamp(40px, 6vw, 72px) 0;
}
.course-hero .cta-blob { z-index: 0; }
.course-hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.5fr 0.9fr;
  gap: 40px;
  align-items: start;
}
.course-hero h1 { color: var(--white); font-size: clamp(1.8rem, 4vw, 2.6rem); }
.course-hero .breadcrumb { justify-content: flex-start; color: rgba(255,255,255,0.8); }
.course-hero .breadcrumb a { color: #fff; text-decoration: underline; }
.course-hero .breadcrumb .current { color: rgba(255,255,255,0.8); }
.course-hero .tag { background: rgba(255,255,255,0.18); color: #fff; }
.course-lead { color: rgba(255,255,255,0.9); font-size: 1.1rem; max-width: 560px; }
.course-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  margin-top: 18px;
  font-size: 0.92rem;
  color: rgba(255,255,255,0.92);
}
.course-hero-meta strong { color: #fff; }
.course-hero-meta .rating .stars { color: var(--accent); }
.course-hero-meta .rating .rating-num { color: #fff; }

/* Sticky enroll card */
.enroll-card {
  background: var(--white);
  color: var(--ink);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}
.enroll-card .enroll-thumb { height: 160px; display: flex; align-items: center; justify-content: center; font-size: 3.6rem; }
.enroll-card-body { padding: 24px; }
.enroll-price { display: flex; align-items: baseline; gap: 10px; margin-bottom: 4px; }
.enroll-price .price { font-size: 2.1rem; }
.enroll-price .old-price { text-decoration: line-through; color: var(--ink-soft); font-size: 1.1rem; }
.enroll-price .save { font-size: 0.8rem; font-weight: 700; color: #15803d; background: #dcfce7; padding: 2px 10px; border-radius: var(--radius-pill); }
.enroll-card .btn { width: 100%; margin-top: 14px; }
.enroll-includes { margin-top: 20px; padding-top: 18px; border-top: 1px solid var(--line); }
.enroll-includes li { display: flex; gap: 10px; font-size: 0.9rem; color: var(--ink-soft); margin-bottom: 10px; }
.enroll-includes li span { color: var(--primary); }

/* What you'll learn */
.learn-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px 28px;
}
.learn-grid li { display: flex; gap: 12px; font-size: 0.96rem; color: var(--ink); }
.learn-grid li .check {
  flex: 0 0 auto;
  width: 24px; height: 24px;
  border-radius: 50%;
  background: rgba(79,70,229,0.1);
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
}

/* Generic content card wrapper */
.panel {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-sm);
}
.subhead { font-size: 1.4rem; font-weight: 700; margin-bottom: 20px; }
.detail-layout { display: grid; grid-template-columns: 1fr; gap: 40px; }

/* ===================== ACCORDION (curriculum + FAQ) ===================== */
.accordion { border: 1px solid var(--line); border-radius: var(--radius-lg); overflow: hidden; background: var(--white); }
.accordion-item { border-bottom: 1px solid var(--line); }
.accordion-item:last-child { border-bottom: none; }
.accordion-trigger {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  cursor: pointer;
  padding: 20px 24px;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 1.02rem;
  color: var(--ink);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  transition: background var(--transition);
}
.accordion-trigger:hover { background: var(--bg-alt); }
.accordion-trigger .acc-meta { font-family: var(--font-body); font-weight: 400; font-size: 0.82rem; color: var(--ink-soft); margin-left: auto; }
.accordion-trigger .acc-icon {
  flex: 0 0 auto;
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--bg-alt);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: var(--primary);
  transition: transform var(--transition), background var(--transition);
}
.accordion-item.open .acc-icon { transform: rotate(45deg); background: var(--primary); color: #fff; }
.accordion-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}
.accordion-item.open .accordion-panel { max-height: 600px; }
.accordion-panel-inner { padding: 0 24px 22px; }
.accordion-panel-inner ul li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  font-size: 0.92rem;
  color: var(--ink-soft);
  border-top: 1px dashed var(--line);
}
.accordion-panel-inner ul li:first-child { border-top: none; }
.accordion-panel-inner .lesson-ico { color: var(--primary); }
.accordion-panel-inner .lesson-time { margin-left: auto; font-size: 0.82rem; }

/* Instructor bio block */
.bio-block { display: grid; grid-template-columns: auto 1fr; gap: 24px; align-items: start; }
.bio-block .avatar { margin: 0; width: 96px; height: 96px; font-size: 1.8rem; }
.bio-stats { display: flex; flex-wrap: wrap; gap: 24px; margin: 14px 0; }
.bio-stats div strong { display: block; font-family: var(--font-head); font-size: 1.15rem; color: var(--ink); }
.bio-stats div small { font-size: 0.8rem; color: var(--ink-soft); }

/* Reviews */
.review-list { display: grid; gap: 18px; }
.review-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 22px 24px;
  box-shadow: var(--shadow-sm);
}
.review-head { display: flex; align-items: center; gap: 12px; margin-bottom: 8px; }
.review-head .avatar { margin: 0; width: 46px; height: 46px; font-size: 0.95rem; }
.review-head strong { display: block; font-family: var(--font-head); font-size: 0.95rem; }
.review-head small { color: var(--ink-soft); font-size: 0.8rem; }
.review-card p { margin: 0; color: var(--ink); }

/* ===================== INSTRUCTORS PAGE ===================== */
.instructor-grid.full { grid-template-columns: repeat(3, 1fr); }
.instructor-card.detailed { text-align: center; }
.instructor-card.detailed .instr-stats {
  display: flex;
  justify-content: center;
  gap: 18px;
  margin: 14px 0 16px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}
.instructor-card.detailed .instr-stats div strong { display: block; font-family: var(--font-head); font-size: 1.05rem; color: var(--ink); }
.instructor-card.detailed .instr-stats div small { font-size: 0.72rem; color: var(--ink-soft); }
.instructor-card.detailed .btn { width: 100%; }

/* Become an instructor band */
.become-band {
  background: var(--bg-alt);
  border-radius: var(--radius-lg);
  padding: clamp(32px, 5vw, 56px);
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 36px;
  align-items: center;
}
.become-band h2 { font-size: clamp(1.6rem, 3vw, 2.1rem); }
.become-perks { display: grid; gap: 14px; }
.become-perks li { display: flex; gap: 12px; align-items: flex-start; font-size: 0.95rem; }
.become-perks .perk-ico { font-size: 1.4rem; }

/* ===================== ABOUT PAGE ===================== */
.story-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.story-visual {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: var(--radius-lg);
  min-height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 6rem;
  box-shadow: var(--shadow-lg);
}
.stat-band {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}
.stat-band .stat-box {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 30px 20px;
  box-shadow: var(--shadow-sm);
}
.stat-band .stat-num { font-size: 2.4rem; }
.values-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.value-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 30px 26px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}
.value-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.value-card .feature-icon { width: 54px; height: 54px; }

/* ===================== CONTACT PAGE ===================== */
.contact-layout { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 40px; align-items: start; }
.contact-form .field { margin-bottom: 16px; }
.contact-form label {
  display: block;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 0.85rem;
  margin-bottom: 6px;
  color: var(--ink);
}
.contact-form input,
.contact-form textarea {
  width: 100%;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--ink);
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 13px 16px;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.contact-form textarea { min-height: 140px; resize: vertical; }
.contact-form input:focus,
.contact-form textarea:focus { border-color: var(--primary-light); box-shadow: 0 0 0 3px rgba(99,102,241,0.15); }
.contact-form .form-msg { color: var(--primary); }
.contact-form .form-msg.ok { color: #15803d; }

.contact-info { display: grid; gap: 16px; }
.info-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 22px 24px;
  box-shadow: var(--shadow-sm);
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.info-card .info-ico {
  flex: 0 0 auto;
  width: 48px; height: 48px;
  border-radius: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
}
.info-card h4 { margin: 0 0 2px; font-size: 1rem; }
.info-card p { margin: 0; font-size: 0.9rem; }

.faq-accordion { max-width: 820px; margin-inline: auto; }
.faq-accordion .accordion-panel-inner { padding: 0 24px 22px; }
.faq-accordion .accordion-panel-inner p { margin: 0; font-size: 0.95rem; }

/* ===================== RELATED / SHARED SPACING ===================== */
.section-head.left { text-align: left; margin-left: 0; }
.lead-text { font-size: 1.12rem; color: var(--ink); max-width: 720px; }

/* ===================== RESPONSIVE (multi-page) ===================== */
@media (max-width: 992px) {
  .course-hero-inner { grid-template-columns: 1fr; }
  .enroll-card { max-width: 460px; }
  .instructor-grid.full { grid-template-columns: repeat(2, 1fr); }
  .become-band { grid-template-columns: 1fr; }
  .story-grid { grid-template-columns: 1fr; }
  .stat-band { grid-template-columns: repeat(2, 1fr); }
  .values-grid { grid-template-columns: 1fr 1fr; }
  .contact-layout { grid-template-columns: 1fr; }
  .filter-bar { grid-template-columns: 1fr 1fr; }
  .filter-bar .btn { grid-column: 1 / -1; }
}

@media (max-width: 560px) {
  .filter-bar { grid-template-columns: 1fr; }
  .learn-grid { grid-template-columns: 1fr; }
  .instructor-grid.full { grid-template-columns: 1fr; }
  .values-grid { grid-template-columns: 1fr; }
  .stat-band { grid-template-columns: 1fr 1fr; }
  .bio-block { grid-template-columns: 1fr; text-align: center; }
  .bio-block .avatar { margin-inline: auto; }
  .bio-stats { justify-content: center; }
}

/* ===================== PHOTO HELPER ===================== */
/* Applied to hero, about and course photo areas to display a real
   image while preserving the original box dimensions/aspect ratio.
   The emoji/text glyph inside is hidden so the photo shows cleanly. */
.has-photo {
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}
.has-photo > span { display: none; }