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

/* ========================
   DESIGN TOKENS
======================== */
:root {
  --color-navy:        #0A1628;
  --color-navy-mid:    #0F2042;
  --color-navy-light:  #162B55;
  --color-teal:        #00C9A7;
  --color-teal-dark:   #00A88C;
  --color-white:       #FFFFFF;
  --color-off-white:   #F4F7FB;
  --color-gray-light:  #E8EDF5;
  --color-gray-mid:    #6B7A90;
  --color-gray-dark:   #3A4558;
  --color-text:        #0A1628;
  --color-text-light:  #6B7A90;

  --font-heading:      'Space Grotesk', sans-serif;
  --font-body:         'Inter', sans-serif;
  --font-mono:         'JetBrains Mono', monospace;

  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  16px;

  --shadow-card: 0 2px 20px rgba(10,22,40,0.08);
  --shadow-hover:0 8px 40px rgba(10,22,40,0.16);

  --transition: 0.22s ease;
}

/* ========================
   RESET
======================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-white);
  line-height: 1.6;
  font-size: 16px;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; }
button { border: none; cursor: pointer; font-family: inherit; }
input, textarea, select { font-family: inherit; }

/* ========================
   TYPOGRAPHY
======================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.2;
  font-weight: 700;
  color: var(--color-navy);
}
h1 { font-size: clamp(2.2rem, 5vw, 3.8rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.6rem); }
h4 { font-size: 1.15rem; }
p  { line-height: 1.7; color: var(--color-gray-dark); }
.text-teal   { color: var(--color-teal); }
.text-light  { color: var(--color-gray-mid); }
.text-white  { color: var(--color-white); }
.text-mono   { font-family: var(--font-mono); }
.text-center { text-align: center; }

/* ========================
   LAYOUT
======================== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.container--narrow { max-width: 860px; }
.container--wide   { max-width: 1400px; }

.section        { padding: 80px 0; }
.section--sm    { padding: 48px 0; }
.section--lg    { padding: 120px 0; }
.section--dark  { background: var(--color-navy); }
.section--navy  { background: var(--color-navy-mid); }
.section--off   { background: var(--color-off-white); }

.grid-2  { display: grid; grid-template-columns: repeat(2,1fr); gap: 32px; }
.grid-3  { display: grid; grid-template-columns: repeat(3,1fr); gap: 28px; }
.grid-4  { display: grid; grid-template-columns: repeat(4,1fr); gap: 24px; }
.flex    { display: flex; }
.flex-center  { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }

.gap-8  { gap: 8px; }
.gap-16 { gap: 16px; }
.gap-24 { gap: 24px; }
.gap-32 { gap: 32px; }

.mt-8  { margin-top: 8px;  }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mt-48 { margin-top: 48px; }
.mt-64 { margin-top: 64px; }

.mb-8  { margin-bottom: 8px;  }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-32 { margin-bottom: 32px; }
.mb-48 { margin-bottom: 48px; }

/* ========================
   BUTTONS
======================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: var(--radius-md);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  transition: all var(--transition);
  letter-spacing: 0.01em;
  cursor: pointer;
}
.btn--primary {
  background: var(--color-teal);
  color: var(--color-navy);
}
.btn--primary:hover {
  background: var(--color-teal-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,201,167,0.3);
}
.btn--outline {
  background: transparent;
  color: var(--color-teal);
  border: 1.5px solid var(--color-teal);
}
.btn--outline:hover {
  background: var(--color-teal);
  color: var(--color-navy);
}
.btn--dark {
  background: var(--color-navy);
  color: var(--color-white);
}
.btn--dark:hover {
  background: var(--color-navy-light);
  transform: translateY(-2px);
}
.btn--white {
  background: var(--color-white);
  color: var(--color-navy);
}
.btn--white:hover {
  background: var(--color-off-white);
}
.btn--sm { padding: 8px 18px; font-size: 0.85rem; }
.btn--lg { padding: 16px 36px; font-size: 1.05rem; }

/* ========================
   HEADER / NAV
======================== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: var(--color-navy);
  border-bottom: 1px solid rgba(255,255,255,0.07);
  height: 68px;
  display: flex;
  align-items: center;
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}
.logo {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.35rem;
  color: var(--color-white);
  display: flex;
  align-items: center;
  gap: 10px;
}
.logo-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--color-teal);
  flex-shrink: 0;
}
.logo span { color: var(--color-teal); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-links a {
  color: rgba(255,255,255,0.72);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--color-white);
  background: rgba(255,255,255,0.07);
}

/* Dropdown */
.nav-dropdown {
  position: relative;
}
.nav-dropdown > a::after {
  content: ' ▾';
  font-size: 0.65rem;
  opacity: 0.6;
}
.dropdown-menu {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  background: var(--color-navy-mid);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-md);
  padding: 8px;
  min-width: 220px;
  box-shadow: 0 16px 40px rgba(0,0,0,0.4);
  z-index: 100;
}
.nav-dropdown:hover .dropdown-menu { display: block; }
.dropdown-menu a {
  display: block;
  padding: 9px 14px;
  font-size: 0.875rem;
  color: rgba(255,255,255,0.75);
  border-radius: var(--radius-sm);
}
.dropdown-menu a:hover {
  background: rgba(0,201,167,0.1);
  color: var(--color-teal);
}

.nav-cta { margin-left: 12px; }

/* Mobile menu toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: transparent;
  padding: 8px;
}
.nav-toggle span {
  display: block;
  width: 22px; height: 2px;
  background: var(--color-white);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ========================
   HERO (Grid-based)
======================== */
.hero {
  min-height: 100vh;
  background: var(--color-navy);
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 68px;
}
.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,201,167,0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,201,167,0.07) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}
.hero-grid-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 50% at 70% 50%, rgba(0,201,167,0.06) 0%, transparent 70%);
}
.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  position: relative;
  z-index: 2;
  padding: 80px 0;
}
.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-teal);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.hero-title {
  font-size: clamp(2.4rem, 4.5vw, 4rem);
  color: var(--color-white);
  line-height: 1.1;
  font-weight: 700;
}
.hero-title span { color: var(--color-teal); }
.hero-desc {
  color: rgba(255,255,255,0.62);
  font-size: 1.1rem;
  margin-top: 20px;
  line-height: 1.8;
  max-width: 520px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  margin-top: 36px;
  flex-wrap: wrap;
}
.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 1px;
  margin-top: 52px;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.hero-metric {
  padding: 20px;
  background: rgba(255,255,255,0.03);
}
.hero-metric-val {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-teal);
}
.hero-metric-label {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.5);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* Hero visual panel */
.hero-visual {
  position: relative;
}
.hero-img-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(0,201,167,0.2);
}
.hero-img-wrap img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.hero-code-card {
  position: absolute;
  bottom: -24px;
  left: -24px;
  background: var(--color-navy-mid);
  border: 1px solid rgba(0,201,167,0.25);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-teal);
  max-width: 260px;
  line-height: 1.6;
}
.hero-code-card .line-comment { color: rgba(255,255,255,0.3); }

/* ========================
   SECTION LABEL
======================== */
.section-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-teal);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.section-title { margin-bottom: 16px; }
.section-desc  { color: var(--color-gray-mid); max-width: 620px; font-size: 1.05rem; }

/* ========================
   CARDS
======================== */
.card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
}
.card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
  border-color: var(--color-teal);
}
.card-body { padding: 28px; }
.card-img img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }

/* Course card */
.course-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-white);
  border: 1px solid var(--color-gray-light);
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}
.course-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
  border-color: rgba(0,201,167,0.4);
}
.course-card__img img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
.course-card__body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.course-card__level {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--color-teal);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 10px;
}
.course-card__title { font-size: 1.15rem; margin-bottom: 10px; }
.course-card__desc  { font-size: 0.9rem; color: var(--color-gray-mid); margin-bottom: 20px; flex: 1; }
.course-card__meta  { display: flex; gap: 16px; font-size: 0.82rem; color: var(--color-gray-mid); padding-top: 16px; border-top: 1px solid var(--color-gray-light); }
.course-card__meta span { display: flex; align-items: center; gap: 5px; }

/* Blog card */
.blog-card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
}
.blog-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}
.blog-card__img img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
.blog-card__body { padding: 24px; }
.blog-card__cat {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--color-teal);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 10px;
}
.blog-card__title { font-size: 1.1rem; margin-bottom: 10px; line-height: 1.4; }
.blog-card__excerpt { font-size: 0.88rem; color: var(--color-gray-mid); margin-bottom: 16px; }
.blog-card__meta { font-size: 0.8rem; color: var(--color-gray-mid); display: flex; gap: 12px; align-items: center; }

/* Feature card / icon card */
.feature-card {
  padding: 32px 28px;
  background: var(--color-white);
  border: 1px solid var(--color-gray-light);
  border-radius: var(--radius-lg);
  transition: all var(--transition);
}
.feature-card:hover {
  border-color: rgba(0,201,167,0.4);
  box-shadow: var(--shadow-hover);
}
.feature-card--dark {
  background: var(--color-navy-mid);
  border-color: rgba(255,255,255,0.07);
}
.feature-card--dark h3 { color: var(--color-white); }
.feature-card--dark p  { color: rgba(255,255,255,0.55); }
.feature-icon {
  width: 48px; height: 48px;
  border-radius: var(--radius-md);
  background: rgba(0,201,167,0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.3rem;
}
.feature-card--dark .feature-icon { background: rgba(0,201,167,0.15); }

/* Stat card */
.stat-card {
  text-align: center;
  padding: 40px 24px;
}
.stat-number {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-teal);
  line-height: 1;
}
.stat-label { font-size: 0.9rem; color: rgba(255,255,255,0.55); margin-top: 8px; }

/* Testimonial card */
.testimonial-card {
  background: var(--color-navy-mid);
  border: 1px solid rgba(255,255,255,0.07);
  border-radius: var(--radius-lg);
  padding: 32px;
}
.testimonial-text {
  color: rgba(255,255,255,0.8);
  font-size: 0.97rem;
  line-height: 1.7;
  margin-bottom: 24px;
}
.testimonial-author {
  display: flex;
  align-items: center;
  gap: 14px;
}
.testimonial-avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--color-teal);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-navy);
  font-size: 1rem;
  flex-shrink: 0;
}
.testimonial-name { font-family: var(--font-heading); color: var(--color-white); font-weight: 600; font-size: 0.95rem; }
.testimonial-role { font-size: 0.8rem; color: rgba(255,255,255,0.45); margin-top: 2px; }
.testimonial-stars { color: var(--color-teal); font-size: 0.85rem; margin-bottom: 14px; letter-spacing: 2px; }

/* ========================
   TOPIC / TAG
======================== */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: 99px;
  font-size: 0.78rem;
  font-weight: 500;
  background: rgba(0,201,167,0.1);
  color: var(--color-teal);
  font-family: var(--font-mono);
}

/* ========================
   BREADCRUMB
======================== */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.83rem;
  color: var(--color-gray-mid);
  margin-bottom: 24px;
}
.breadcrumb a { color: var(--color-gray-mid); }
.breadcrumb a:hover { color: var(--color-teal); }
.breadcrumb span { color: rgba(255,255,255,0.3); }

/* ========================
   PAGE HEADER
======================== */
.page-header {
  background: var(--color-navy);
  padding: 100px 0 60px;
  position: relative;
  overflow: hidden;
}
.page-header-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,201,167,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,201,167,0.06) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}
.page-header h1 { color: var(--color-white); }
.page-header p  { color: rgba(255,255,255,0.6); margin-top: 12px; font-size: 1.05rem; }
.breadcrumb--light a { color: rgba(255,255,255,0.5); }
.breadcrumb--light { color: rgba(255,255,255,0.4); }
.breadcrumb--light .sep { color: rgba(255,255,255,0.25); }

/* ========================
   STEP / PROCESS
======================== */
.step-list { counter-reset: steps; }
.step-item {
  display: flex;
  gap: 24px;
  padding: 28px 0;
  border-bottom: 1px solid var(--color-gray-light);
  counter-increment: steps;
}
.step-item:last-child { border-bottom: none; }
.step-num {
  flex-shrink: 0;
  width: 48px; height: 48px;
  border-radius: 50%;
  background: rgba(0,201,167,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-teal);
}
.step-content h4 { margin-bottom: 6px; }
.step-content p  { font-size: 0.92rem; }

/* ========================
   ACCORDION / FAQ
======================== */
.faq-item {
  border: 1px solid var(--color-gray-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 12px;
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  cursor: pointer;
  background: var(--color-white);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1rem;
  color: var(--color-navy);
  transition: all var(--transition);
}
.faq-question:hover { background: var(--color-off-white); }
.faq-question.open  { background: var(--color-off-white); }
.faq-icon {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--color-gray-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
  transition: all var(--transition);
  color: var(--color-gray-mid);
}
.faq-question.open .faq-icon {
  background: var(--color-teal);
  color: var(--color-navy);
  transform: rotate(45deg);
}
.faq-answer {
  display: none;
  padding: 0 24px 22px;
  font-size: 0.93rem;
  color: var(--color-gray-dark);
  line-height: 1.75;
}
.faq-answer.open { display: block; }

/* ========================
   FORM
======================== */
.form-group {
  margin-bottom: 20px;
}
.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: 7px;
  font-family: var(--font-heading);
}
.form-control {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--color-gray-light);
  border-radius: var(--radius-md);
  font-size: 0.93rem;
  background: var(--color-white);
  color: var(--color-text);
  transition: border-color var(--transition);
  outline: none;
}
.form-control:focus {
  border-color: var(--color-teal);
  box-shadow: 0 0 0 3px rgba(0,201,167,0.1);
}
.form-control::placeholder { color: var(--color-gray-mid); }
textarea.form-control { resize: vertical; min-height: 130px; }
select.form-control { appearance: none; }

.form-success {
  display: none;
  padding: 20px 24px;
  background: rgba(0,201,167,0.08);
  border: 1.5px solid var(--color-teal);
  border-radius: var(--radius-md);
  text-align: center;
  color: var(--color-teal);
  font-weight: 600;
  font-family: var(--font-heading);
}
.form-success.show { display: block; }

/* ========================
   TABLE
======================== */
.data-table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
.data-table th {
  background: var(--color-navy);
  color: var(--color-white);
  padding: 14px 18px;
  text-align: left;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.data-table td { padding: 14px 18px; border-bottom: 1px solid var(--color-gray-light); color: var(--color-gray-dark); }
.data-table tr:hover td { background: var(--color-off-white); }

/* ========================
   ARTICLE / LESSON CONTENT
======================== */
.article-body h2 { margin: 40px 0 16px; }
.article-body h3 { margin: 32px 0 12px; }
.article-body p  { margin-bottom: 20px; }
.article-body ul, .article-body ol { padding-left: 24px; margin-bottom: 20px; }
.article-body ul { list-style: disc; }
.article-body ol { list-style: decimal; }
.article-body li { margin-bottom: 8px; color: var(--color-gray-dark); font-size: 0.95rem; }
.article-body pre {
  background: var(--color-navy);
  border: 1px solid rgba(0,201,167,0.2);
  border-radius: var(--radius-md);
  padding: 24px;
  overflow-x: auto;
  margin: 24px 0;
}
.article-body code {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-teal);
}
.article-body blockquote {
  border-left: 3px solid var(--color-teal);
  padding: 12px 24px;
  background: rgba(0,201,167,0.05);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 24px 0;
  font-style: italic;
  color: var(--color-gray-dark);
}

/* Sidebar */
.sidebar-card {
  background: var(--color-off-white);
  border-radius: var(--radius-lg);
  padding: 28px;
  border: 1px solid var(--color-gray-light);
}
.sidebar-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 16px;
  color: var(--color-navy);
}
.sidebar-link-list a {
  display: block;
  padding: 9px 0;
  border-bottom: 1px solid var(--color-gray-light);
  font-size: 0.88rem;
  color: var(--color-gray-dark);
  transition: color var(--transition);
}
.sidebar-link-list a:last-child { border-bottom: none; }
.sidebar-link-list a:hover { color: var(--color-teal); }

/* ========================
   CURRICULUM LIST
======================== */
.curriculum-module {
  border: 1px solid var(--color-gray-light);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
}
.curriculum-header {
  padding: 18px 22px;
  background: var(--color-off-white);
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.97rem;
}
.curriculum-lessons { padding: 8px 0; }
.curriculum-lesson {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 22px;
  font-size: 0.88rem;
  color: var(--color-gray-dark);
  border-bottom: 1px solid var(--color-gray-light);
  transition: background var(--transition);
}
.curriculum-lesson:last-child { border-bottom: none; }
.curriculum-lesson:hover { background: var(--color-off-white); }
.curriculum-lesson .lesson-icon { color: var(--color-teal); font-size: 0.9rem; }

/* ========================
   PROGRESS BAR
======================== */
.progress-bar {
  height: 6px;
  background: var(--color-gray-light);
  border-radius: 99px;
  overflow: hidden;
  margin-top: 8px;
}
.progress-fill {
  height: 100%;
  background: var(--color-teal);
  border-radius: 99px;
}

/* ========================
   INFO BOX
======================== */
.info-box {
  padding: 20px 24px;
  border-radius: var(--radius-md);
  font-size: 0.92rem;
  line-height: 1.7;
  margin: 24px 0;
}
.info-box--teal  { background: rgba(0,201,167,0.08); border-left: 3px solid var(--color-teal); }
.info-box--navy  { background: var(--color-navy); color: rgba(255,255,255,0.75); border-left: 3px solid var(--color-teal); }

/* ========================
   INSTRUCTOR CARD
======================== */
.instructor-card {
  text-align: center;
  padding: 32px 24px;
  background: var(--color-white);
  border: 1px solid var(--color-gray-light);
  border-radius: var(--radius-lg);
  transition: all var(--transition);
}
.instructor-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.instructor-avatar {
  width: 90px; height: 90px;
  border-radius: 50%;
  overflow: hidden;
  margin: 0 auto 18px;
  border: 3px solid rgba(0,201,167,0.3);
}
.instructor-avatar img { width: 100%; height: 100%; object-fit: cover; }
.instructor-name { font-size: 1.1rem; margin-bottom: 5px; }
.instructor-role { font-size: 0.85rem; color: var(--color-teal); font-family: var(--font-mono); margin-bottom: 12px; }
.instructor-bio  { font-size: 0.85rem; color: var(--color-gray-mid); }

/* ========================
   NEWSLETTER
======================== */
.newsletter-section {
  background: var(--color-teal);
  padding: 64px 0;
}
.newsletter-inner { max-width: 580px; margin: 0 auto; text-align: center; }
.newsletter-inner h2 { color: var(--color-navy); }
.newsletter-inner p  { color: rgba(10,22,40,0.7); margin-top: 10px; }
.newsletter-form {
  display: flex;
  gap: 12px;
  margin-top: 28px;
}
.newsletter-form input {
  flex: 1;
  padding: 13px 18px;
  border-radius: var(--radius-md);
  border: none;
  font-size: 0.93rem;
  outline: none;
}
.newsletter-form button {
  padding: 13px 28px;
  background: var(--color-navy);
  color: var(--color-white);
  border-radius: var(--radius-md);
  font-weight: 700;
  font-family: var(--font-heading);
  white-space: nowrap;
  transition: background var(--transition);
}
.newsletter-form button:hover { background: var(--color-navy-light); }

/* ========================
   FOOTER
======================== */
.site-footer {
  background: var(--color-navy);
  padding: 64px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.07);
}
.footer-brand p {
  color: rgba(255,255,255,0.5);
  font-size: 0.88rem;
  margin-top: 14px;
  line-height: 1.7;
  max-width: 280px;
}
.footer-col h5 {
  font-family: var(--font-heading);
  color: var(--color-white);
  font-size: 0.88rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 18px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul a {
  font-size: 0.87rem;
  color: rgba(255,255,255,0.5);
  transition: color var(--transition);
}
.footer-col ul a:hover { color: var(--color-teal); }
.footer-bottom {
  padding-top: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom p { font-size: 0.82rem; color: rgba(255,255,255,0.35); }
.footer-bottom-links {
  display: flex;
  gap: 20px;
}
.footer-bottom-links a {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.35);
  transition: color var(--transition);
}
.footer-bottom-links a:hover { color: var(--color-teal); }
.footer-contact {
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.footer-contact a {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
  display: flex;
  align-items: center;
  gap: 8px;
  transition: color var(--transition);
}
.footer-contact a:hover { color: var(--color-teal); }

/* ========================
   COOKIE BANNER
======================== */
.cookie-banner {
  position: fixed;
  bottom: 24px;
  left: 24px;
  right: 24px;
  max-width: 640px;
  background: var(--color-navy-mid);
  border: 1px solid rgba(0,201,167,0.25);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  z-index: 9999;
  display: flex;
  gap: 20px;
  align-items: flex-start;
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}
.cookie-banner.hidden { display: none; }
.cookie-banner-text { flex: 1; }
.cookie-banner-text p { font-size: 0.87rem; color: rgba(255,255,255,0.7); }
.cookie-banner-text a { color: var(--color-teal); }
.cookie-banner-actions { display: flex; gap: 10px; flex-shrink: 0; margin-top: 4px; }

/* ========================
   POLICY PAGES
======================== */
.policy-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 60px 24px;
}
.policy-content h1 { margin-bottom: 10px; }
.policy-meta { color: var(--color-gray-mid); font-size: 0.85rem; margin-bottom: 40px; padding-bottom: 20px; border-bottom: 1px solid var(--color-gray-light); }
.policy-content h2 { font-size: 1.3rem; margin: 36px 0 14px; color: var(--color-navy); }
.policy-content h3 { font-size: 1.1rem; margin: 24px 0 10px; }
.policy-content p  { margin-bottom: 16px; color: var(--color-gray-dark); line-height: 1.75; font-size: 0.95rem; }
.policy-content ul { padding-left: 22px; margin-bottom: 16px; }
.policy-content ul li { list-style: disc; margin-bottom: 7px; color: var(--color-gray-dark); font-size: 0.95rem; line-height: 1.6; }
.policy-content a { color: var(--color-teal); }
.policy-toc {
  background: var(--color-off-white);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 40px;
  border-left: 3px solid var(--color-teal);
}
.policy-toc h4 { margin-bottom: 12px; font-size: 0.9rem; text-transform: uppercase; letter-spacing: 0.05em; }
.policy-toc ol { padding-left: 18px; }
.policy-toc ol li { list-style: decimal; margin-bottom: 6px; }
.policy-toc a { color: var(--color-teal); font-size: 0.88rem; }

/* ========================
   MOBILE NAV
======================== */
.mobile-nav {
  display: none;
  position: fixed;
  top: 68px;
  left: 0; right: 0;
  background: var(--color-navy-mid);
  z-index: 999;
  padding: 16px;
  border-bottom: 1px solid rgba(255,255,255,0.07);
}
.mobile-nav.open { display: block; }
.mobile-nav a {
  display: block;
  padding: 12px 16px;
  color: rgba(255,255,255,0.75);
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}
.mobile-nav a:hover { background: rgba(255,255,255,0.05); color: var(--color-teal); }

/* ========================
   UTILITIES
======================== */
.divider {
  height: 1px;
  background: var(--color-gray-light);
  margin: 40px 0;
}
.divider--dark { background: rgba(255,255,255,0.07); }
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 99px;
  font-size: 0.73rem;
  font-weight: 600;
  font-family: var(--font-mono);
}
.badge--teal { background: rgba(0,201,167,0.15); color: var(--color-teal); }
.badge--navy { background: var(--color-navy); color: var(--color-white); }

/* Back to top */
.back-to-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 44px; height: 44px;
  background: var(--color-teal);
  color: var(--color-navy);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  cursor: pointer;
  opacity: 0;
  transition: all var(--transition);
  z-index: 500;
  border: none;
}
.back-to-top.visible { opacity: 1; }
.back-to-top:hover { background: var(--color-teal-dark); transform: translateY(-3px); }

/* ========================
   RESPONSIVE
======================== */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .grid-4 { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 768px) {
  .nav-links, .nav-cta { display: none; }
  .nav-toggle { display: flex; }
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { display: none; }
  .hero { min-height: auto; padding: 100px 0 60px; }
  .grid-2 { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .newsletter-form { flex-direction: column; }
  .hero-metrics { grid-template-columns: 1fr 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .section { padding: 56px 0; }
  .section--lg { padding: 72px 0; }
  .cookie-banner { flex-direction: column; left: 16px; right: 16px; bottom: 16px; }
}
@media (max-width: 480px) {
  .hero-metrics { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; }
  .btn { width: 100%; justify-content: center; }
}