/* ===========================================
   CLEAR WISDOM — GITHUB PAGES LANDING PAGE
   =========================================== */

:root {
  --primary: #2c5aa0;
  --primary-hover: #1e4a8a;
  --primary-light: #4a7bc8;
  --primary-bg: rgba(44, 90, 160, 0.08);
  --primary-shadow: rgba(44, 90, 160, 0.25);

  --bg: #f9f8f4;
  --bg-white: #ffffff;
  --bg-section: #f4f3ef;

  --text: #111111;
  --text-secondary: #333333;
  --text-muted: #666666;
  --text-light: #888888;

  --border: #e0e0e0;
  --border-medium: #cccccc;

  --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);

  --font: 'Lora', Georgia, 'Times New Roman', serif;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --radius: 12px;
  --radius-sm: 6px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --max-width: 1100px;
  --transition: 0.2s ease-in-out;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a { color: inherit; }

/* ===========================================
   BUTTONS
   =========================================== */

.btn {
  display: inline-block;
  padding: 10px 22px;
  border-radius: var(--radius-full);
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition);
  border: 2px solid transparent;
  white-space: nowrap;
  line-height: 1.4;
}

.btn-primary {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
}

.btn-primary:hover {
  background: var(--primary-hover);
  border-color: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 14px var(--primary-shadow);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}

.btn-outline:hover {
  background: var(--primary);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 4px 14px var(--primary-shadow);
}

.btn-large {
  padding: 14px 32px;
  font-size: 16px;
}

/* ===========================================
   NAV
   =========================================== */

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(249, 248, 244, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 14px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-family: var(--font-sans);
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.2px;
}

.nav-brand img {
  flex-shrink: 0;
}

/* ===========================================
   HERO
   =========================================== */

.hero {
  padding: 80px 32px 64px;
  background: var(--bg);
}

.hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.hero-badge {
  display: inline-block;
  background: var(--primary-bg);
  color: var(--primary);
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 5px 14px;
  border-radius: var(--radius-full);
  margin-bottom: 20px;
}

.hero h1 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.5px;
  color: var(--text);
  margin: 0 0 20px;
}

.hero-sub {
  font-size: 18px;
  line-height: 1.7;
  color: var(--text-muted);
  margin: 0 0 36px;
  max-width: 480px;
}

.hero-sub strong {
  color: var(--text-secondary);
  font-weight: 600;
}

.hero-ctas {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* Browser Mockup */
.hero-mockup {
  perspective: 1200px;
}

.mockup-window {
  background: var(--bg-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg), 0 0 0 1px rgba(0,0,0,0.06);
  overflow: hidden;
  transform: rotateY(-4deg) rotateX(2deg);
  transition: transform 0.4s ease;
}

.mockup-window:hover {
  transform: rotateY(0deg) rotateX(0deg);
}

.mockup-bar {
  background: #e8e7e3;
  padding: 10px 16px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  flex-shrink: 0;
}
.dot-red    { background: #ff5f57; }
.dot-yellow { background: #febc2e; }
.dot-green  { background: #28c840; }

.mockup-url {
  font-family: var(--font-sans);
  font-size: 12px;
  color: var(--text-muted);
  background: rgba(0,0,0,0.06);
  padding: 3px 12px;
  border-radius: var(--radius-full);
  margin-left: 10px;
}

.mockup-content {
  background: var(--bg);
  padding: 32px 28px 28px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.mockup-logo img {
  width: 48px;
  height: auto;
  margin: 0 auto;
}

.mockup-meta {
  font-family: var(--font-sans);
  font-size: 11px;
  color: var(--text-light);
  letter-spacing: 0.5px;
}

.mockup-heading {
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 1.2px;
}

.mockup-quote {
  background: #fafafa;
  border-left: 3px solid var(--primary);
  border-radius: 8px;
  padding: 14px 18px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--text-secondary);
  text-align: left;
  width: 100%;
}

.mockup-quote p {
  margin: 0 0 6px;
}
.mockup-quote p:last-child {
  margin: 0;
}

.mockup-explanation {
  font-size: 12px;
  color: var(--text-light);
  font-style: italic;
  line-height: 1.5;
  max-width: 280px;
}

.mockup-author {
  font-size: 12px;
  color: var(--text-muted);
  font-style: italic;
}

/* ===========================================
   STATS BAR
   =========================================== */

.proof-bar {
  background: var(--primary);
  color: #ffffff;
  padding: 28px 32px;
}

.proof-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
}

.proof-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: 8px 40px;
  text-align: center;
}

.proof-item strong {
  font-family: var(--font-sans);
  font-size: 24px;
  font-weight: 700;
  line-height: 1;
}

.proof-item span {
  font-family: var(--font-sans);
  font-size: 12px;
  opacity: 0.8;
  letter-spacing: 0.3px;
}

.proof-divider {
  width: 1px;
  height: 40px;
  background: rgba(255, 255, 255, 0.25);
}

/* ===========================================
   SHARED SECTION STYLES
   =========================================== */

.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
}

.features,
.preview,
.how-it-works {
  padding: 80px 0;
}

.features { background: var(--bg-white); }
.preview  { background: var(--bg); }
.how-it-works { background: var(--bg-section); }

.features h2,
.preview h2,
.how-it-works h2 {
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  font-weight: 600;
  color: var(--text);
  margin: 0 0 12px;
  text-align: center;
}

.section-sub {
  font-size: 17px;
  color: var(--text-muted);
  text-align: center;
  max-width: 560px;
  margin: 0 auto 52px;
  line-height: 1.7;
}

/* ===========================================
   FEATURES GRID
   =========================================== */

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: all var(--transition);
}

.feature-card:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.feature-icon {
  color: var(--primary);
  margin-bottom: 14px;
  display: flex;
}

.feature-card h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  margin: 0 0 10px;
}

.feature-card p {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.65;
  margin: 0;
}

/* ===========================================
   CONTENT PREVIEW TABS
   =========================================== */

.preview-tabs {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 32px;
}

.tab-btn {
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  padding: 8px 22px;
  border: 2px solid var(--border);
  border-radius: var(--radius-full);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition);
}

.tab-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.tab-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #ffffff;
}

.tab-panel {
  max-width: 620px;
  margin: 0 auto;
  animation: fadeIn 0.2s ease-in-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.sample-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 40px;
  box-shadow: var(--shadow-sm);
  text-align: center;
}

.sample-tag {
  display: inline-block;
  background: var(--primary-bg);
  color: var(--primary);
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  margin-bottom: 16px;
}

.sample-intro {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 20px;
}

.sample-quote {
  font-size: 20px;
  font-style: italic;
  line-height: 1.65;
  color: var(--text-secondary);
  margin: 0 0 20px;
  padding: 0;
  border: none;
}

.sample-explanation {
  font-size: 14px;
  color: var(--text-muted);
  font-style: italic;
  line-height: 1.6;
  margin: 0 0 16px;
  padding: 14px 20px;
  background: var(--bg);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--primary-light);
  text-align: left;
}

.sample-attribution {
  font-size: 14px;
  color: var(--text-light);
  font-style: italic;
}

/* ===========================================
   HOW IT WORKS
   =========================================== */

.steps {
  list-style: none;
  padding: 0;
  margin: 0 0 48px;
  display: flex;
  flex-direction: column;
  gap: 28px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

.step {
  display: flex;
  align-items: flex-start;
  gap: 20px;
}

.step-num {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--primary);
  color: #ffffff;
  font-family: var(--font-sans);
  font-size: 17px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}

.step-text h3 {
  font-size: 17px;
  font-weight: 600;
  margin: 0 0 6px;
  color: var(--text);
}

.step-text p {
  font-size: 15px;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.6;
}

.how-cta {
  text-align: center;
  margin-top: 48px;
}

/* ===========================================
   FINAL CTA SECTION
   =========================================== */

.cta-section {
  background: var(--primary);
  padding: 80px 32px;
  text-align: center;
  color: #ffffff;
}

.cta-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.cta-logo {
  margin: 0 auto 8px;
  opacity: 0.95;
}

.cta-section h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
  font-weight: 600;
  margin: 0;
  color: #ffffff;
}

.cta-section p {
  font-family: var(--font-sans);
  font-size: 16px;
  opacity: 0.85;
  margin: 0;
}

.cta-section .btn-primary {
  background: #ffffff;
  color: var(--primary);
  border-color: #ffffff;
  margin-top: 8px;
}

.cta-section .btn-primary:hover {
  background: rgba(255, 255, 255, 0.9);
  border-color: rgba(255, 255, 255, 0.9);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

/* ===========================================
   FOOTER
   =========================================== */

.footer {
  background: var(--bg-section);
  border-top: 1px solid var(--border);
  padding: 32px;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.footer p {
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--text-muted);
  margin: 0;
}

.footer a {
  color: var(--primary);
  text-decoration: none;
  transition: opacity var(--transition);
}

.footer a:hover {
  opacity: 0.75;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--primary);
}

/* ===========================================
   RESPONSIVE
   =========================================== */

@media (max-width: 900px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 48px;
    text-align: center;
  }

  .hero-sub {
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
  }

  .hero-ctas {
    justify-content: center;
  }

  .hero-mockup {
    max-width: 480px;
    margin: 0 auto;
  }

  .mockup-window {
    transform: none;
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .proof-item {
    padding: 8px 24px;
  }
}

@media (max-width: 600px) {
  .nav-inner {
    padding: 12px 20px;
  }

  .hero {
    padding: 52px 20px 48px;
  }

  .hero h1 {
    font-size: 1.75rem;
  }

  .hero-ctas {
    flex-direction: column;
    align-items: center;
  }

  .btn-large {
    width: 100%;
    max-width: 320px;
    text-align: center;
  }

  .section-inner {
    padding: 0 20px;
  }

  .features,
  .preview,
  .how-it-works {
    padding: 60px 0;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .proof-bar {
    padding: 20px 16px;
  }

  .proof-inner {
    gap: 4px;
  }

  .proof-item {
    padding: 6px 16px;
  }

  .proof-divider {
    display: none;
  }

  .sample-card {
    padding: 28px 24px;
  }

  .sample-quote {
    font-size: 17px;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .footer-links {
    gap: 16px;
    flex-wrap: wrap;
  }

  .cta-section {
    padding: 60px 20px;
  }
}