/* BeFoc Main Stylesheet — Based on DESIGN.md */
@import url('https://fonts.googleapis.com/css2?family=Nunito:ital,wght@0,400;0,600;0,700;0,800;0,900;1,700&family=Nunito+Sans:wght@400;600;700;800&display=swap');

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-duolingo-sans);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  color: var(--color-charcoal);
  background-color: var(--surface-paper-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--color-spark-blue);
  text-decoration: none;
  transition: color 0.15s ease, transform 0.15s ease;
}

a:hover {
  text-decoration: underline;
}

h1, h2, h3, h4, .font-heading {
  font-family: var(--font-feather);
  color: var(--color-charcoal);
  font-weight: var(--font-weight-black);
}

h1 {
  font-size: var(--text-display);
  line-height: var(--leading-display);
  letter-spacing: var(--tracking-display);
}

h2 {
  font-size: var(--text-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-eager-green);
}

h3 {
  font-size: var(--text-heading-sm);
  line-height: var(--leading-heading-sm);
}

p {
  color: var(--color-pencil-gray);
  margin-bottom: var(--spacing-16);
}

.container {
  width: 100%;
  max-width: var(--page-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--spacing-24);
  padding-right: var(--spacing-24);
}

/* ==================== BUTTONS ==================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  font-family: var(--font-duolingo-sans);
  font-size: var(--text-nav-label);
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-nav-label);
  border-radius: var(--radius-buttons);
  cursor: pointer;
  text-decoration: none !important;
  transition: transform 0.1s ease, box-shadow 0.1s ease, filter 0.1s ease;
  user-select: none;
  border: 2px solid transparent;
}

.btn:active {
  transform: translateY(2px);
}

.btn-primary {
  background-color: var(--color-eager-green);
  color: var(--color-paper-white) !important;
  border-color: var(--color-eager-green);
  border-bottom: 4px solid #46a302;
}

.btn-primary:hover {
  filter: brightness(1.06);
}

.btn-primary:active {
  border-bottom-width: 2px;
}

.btn-outline {
  background-color: transparent;
  color: var(--color-spark-blue) !important;
  border: 2px solid var(--color-faded-gray);
  border-bottom: 4px solid var(--color-faded-gray);
}

.btn-outline:hover {
  border-color: var(--color-spark-blue);
  background-color: rgba(28, 176, 246, 0.05);
}

.btn-outline:active {
  border-bottom-width: 2px;
}

.btn-sm {
  padding: 8px 16px;
  font-size: var(--text-caption);
}

/* ==================== NAVIGATION BAR ==================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--surface-paper-white);
  border-bottom: 2px solid var(--color-card-border);
  height: 72px;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-feather);
  font-size: 28px;
  font-weight: var(--font-weight-black);
  color: var(--color-eager-green) !important;
  letter-spacing: -0.5px;
}

.brand-badge {
  font-family: var(--font-duolingo-sans);
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  background-color: var(--color-storybook-green);
  color: var(--color-night-ink);
  padding: 2px 8px;
  border-radius: 6px;
  letter-spacing: 0.5px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-24);
}

.nav-link {
  font-family: var(--font-duolingo-sans);
  font-size: var(--text-nav-label);
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-nav-label);
  color: var(--color-pencil-gray);
  padding: 8px 12px;
  border-radius: var(--radius-nav-items);
  transition: color 0.15s, background-color 0.15s;
}

.nav-link:hover, .nav-link.active {
  color: var(--color-eager-green);
  background-color: var(--color-storybook-green);
  text-decoration: none;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-12);
}

/* ==================== HERO SECTION & MASCOT ANIMATION ==================== */
.hero-section {
  padding: 80px 0 60px 0;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 48px;
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-16);
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--text-caption);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-night-ink);
  background-color: var(--color-storybook-green);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  width: fit-content;
}

.hero-title {
  font-size: var(--text-display);
  color: var(--color-charcoal);
  line-height: 1.15;
}

.hero-title span {
  color: var(--color-eager-green);
}

.hero-subtitle {
  font-size: 20px;
  line-height: 1.5;
  color: var(--color-pencil-gray);
  max-width: 520px;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-16);
  margin-top: var(--spacing-8);
}

/* Polished Mascot Animation */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.mascot-container {
  position: relative;
  width: 100%;
  max-width: 440px;
  text-align: center;
}

.mascot-image {
  width: 100%;
  height: auto;
  max-width: 400px;
  display: block;
  margin: 0 auto;
  filter: drop-shadow(0 20px 30px rgba(0, 4, 55, 0.12));
  animation: befocMascotFloat 4.8s ease-in-out infinite;
  will-change: transform;
}

.mascot-shadow {
  width: 220px;
  height: 24px;
  background: radial-gradient(ellipse at center, rgba(0, 4, 55, 0.16) 0%, rgba(0,0,0,0) 70%);
  border-radius: 50%;
  margin: -10px auto 0 auto;
  animation: befocShadowScale 4.8s ease-in-out infinite;
}

@keyframes befocMascotFloat {
  0% {
    transform: translateY(0px) rotate(0deg);
  }
  50% {
    transform: translateY(-14px) rotate(1.2deg);
  }
  100% {
    transform: translateY(0px) rotate(0deg);
  }
}

@keyframes befocShadowScale {
  0% {
    transform: scale(1);
    opacity: 0.8;
  }
  50% {
    transform: scale(0.85);
    opacity: 0.4;
  }
  100% {
    transform: scale(1);
    opacity: 0.8;
  }
}

@media (prefers-reduced-motion: reduce) {
  .mascot-image, .mascot-shadow {
    animation: none !important;
    transform: none !important;
  }
}

/* ==================== SECTION STYLES ==================== */
.section {
  padding: 80px 0;
  border-top: 2px solid var(--color-card-border);
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 56px auto;
}

.section-header h2 {
  margin-bottom: var(--spacing-12);
}

.section-header p {
  font-size: 19px;
  color: var(--color-pencil-gray);
}

/* ==================== CARDS & GRIDS ==================== */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-24);
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: var(--spacing-32);
}

.card {
  background: var(--surface-paper-white);
  border: 2px solid var(--color-faded-gray);
  border-bottom: 4px solid var(--color-faded-gray);
  border-radius: var(--radius-xl);
  padding: var(--card-padding);
  transition: transform 0.15s ease, border-color 0.15s ease;
  display: flex;
  flex-direction: column;
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--color-spark-blue);
  border-bottom: 4px solid var(--color-spark-blue);
}

.card-icon-img {
  width: 72px;
  height: 72px;
  object-fit: contain;
  margin-bottom: var(--spacing-16);
}

.card-title {
  font-size: 22px;
  margin-bottom: var(--spacing-8);
  color: var(--color-charcoal);
}

.card-desc {
  flex-grow: 1;
  font-size: 16px;
  color: var(--color-pencil-gray);
  margin-bottom: var(--spacing-16);
}

.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--spacing-16);
  border-top: 1px solid var(--color-card-border);
  font-size: var(--text-caption);
  font-weight: 700;
  color: var(--color-pencil-gray);
}

/* Pill Tags */
.tag-pill {
  display: inline-block;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 700;
  background-color: var(--color-storybook-green);
  color: var(--color-night-ink);
  border-radius: var(--radius-pill);
  margin-right: 6px;
  margin-bottom: 6px;
}

/* ==================== ROADMAP & LEARNING PATH VIEW ==================== */
.roadmap-timeline {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-24);
  margin: 32px 0;
}

.roadmap-step {
  display: flex;
  gap: var(--spacing-24);
  background: #fafafa;
  border: 2px solid var(--color-card-border);
  border-radius: var(--radius-xl);
  padding: 24px;
}

.step-badge {
  font-family: var(--font-feather);
  font-size: 18px;
  font-weight: 900;
  color: var(--color-paper-white);
  background-color: var(--color-eager-green);
  padding: 8px 16px;
  border-radius: 8px;
  height: fit-content;
  white-space: nowrap;
}

/* ==================== BLOG POST & ARTICLE READER ==================== */
.article-container {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 48px;
  padding: 48px 0;
}

.article-sidebar {
  position: sticky;
  top: 96px;
  height: fit-content;
  padding: 20px;
  border: 2px solid var(--color-card-border);
  border-radius: var(--radius-xl);
  background-color: #fafafa;
}

.article-sidebar h4 {
  font-size: 16px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
  color: var(--color-charcoal);
}

.toc-list {
  list-style: none;
}

.toc-list li {
  margin-bottom: 8px;
}

.toc-list a {
  font-size: 14px;
  color: var(--color-pencil-gray);
  font-weight: 600;
}

.toc-list a:hover {
  color: var(--color-spark-blue);
}

.article-body {
  max-width: 760px;
}

.article-body h2 {
  margin: 40px 0 16px 0;
}

.article-body h3 {
  margin: 28px 0 12px 0;
}

.article-body p {
  font-size: 18px;
  line-height: 1.7;
  color: var(--color-charcoal);
  margin-bottom: 20px;
}

.article-body ul, .article-body ol {
  margin-left: 24px;
  margin-bottom: 24px;
}

.article-body li {
  margin-bottom: 8px;
  font-size: 17px;
  line-height: 1.6;
}

.lead-paragraph {
  font-size: 21px !important;
  line-height: 1.6 !important;
  color: #333 !important;
  font-weight: 500;
}

.educational-callout {
  display: flex;
  gap: 16px;
  background-color: var(--color-storybook-green);
  border: 2px solid #b8f090;
  border-radius: var(--radius-xl);
  padding: 20px;
  margin: 32px 0;
}

.callout-icon {
  font-size: 28px;
}

.callout-content h4 {
  font-size: 18px;
  color: var(--color-night-ink);
  margin-bottom: 6px;
}

.callout-content p {
  color: #2e4a1a;
  margin-bottom: 0;
}

.affiliate-cta-box {
  background-color: #f7fcfe;
  border: 2px solid #bce7fb;
  border-radius: var(--radius-xl);
  padding: 28px;
  margin: 36px 0;
  text-align: center;
}

.cta-box-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  background-color: var(--color-spark-blue);
  color: white;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  margin-bottom: 12px;
}

.affiliate-disclosure-note {
  margin-top: 14px;
  color: #888;
  font-size: 12px;
}

/* ==================== FOOTER (FULL BLEED EAGER GREEN) ==================== */
.site-footer {
  background-color: var(--surface-eager-green);
  color: var(--color-paper-white);
  padding: 64px 0 32px 0;
  margin-top: 80px;
  border-top: 4px solid #48af02;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand h3 {
  font-size: 32px;
  color: var(--color-paper-white);
  margin-bottom: 12px;
}

.footer-brand p {
  color: var(--color-storybook-green);
  font-size: 16px;
  max-width: 320px;
}

.footer-col h4 {
  font-size: 16px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-paper-white);
  margin-bottom: 20px;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  color: var(--color-storybook-green);
  font-weight: 600;
  font-size: 15px;
  transition: color 0.15s;
}

.footer-links a:hover {
  color: var(--color-paper-white);
  text-decoration: underline;
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 14px;
  color: var(--color-storybook-green);
}

/* ==================== RESPONSIVE MEDIA QUERIES ==================== */
@media (max-width: 960px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 32px;
  }
  .hero-content {
    align-items: center;
  }
  .hero-subtitle {
    margin: 0 auto;
  }
  .hero-ctas {
    justify-content: center;
  }
  .article-container {
    grid-template-columns: 1fr;
  }
  .article-sidebar {
    display: none; /* Collapsed for mobile readability */
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {
  h1 { font-size: 36px; }
  h2 { font-size: 28px; }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .main-nav {
    display: none; /* Hamburger menu for mobile */
  }
}