/* ============================================================
   VerLake Marketing Site — styles.css
   Dark theme, responsive, zero dependencies
   ============================================================ */

/* --- Reset & Base ------------------------------------------ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #0a0e27;
  --bg-alt:    #0f1538;
  --bg-card:   #131a3d;
  --bg-card-h: #1a2252;
  --border:    #1e2a5a;
  --text:      #e2e8f0;
  --text-dim:  #94a3b8;
  --text-head: #f1f5f9;
  --accent:    #3b82f6;
  --accent-h:  #60a5fa;
  --green:     #22c55e;
  --red:       #ef4444;
  --radius:    12px;
  --radius-sm: 8px;
  --shadow:    0 4px 24px rgba(0,0,0,.35);
  --font:      -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }
a { color: var(--accent-h); text-decoration: none; transition: color .2s; }
a:hover { color: #93c5fd; }
ul { list-style: none; }

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Fade-in animation ------------------------------------ */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .6s ease, transform .6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Header / Nav ----------------------------------------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(10, 14, 39, .85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-head);
}
.nav-logo:hover { color: var(--text-head); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-links a {
  color: var(--text-dim);
  font-size: .9rem;
  font-weight: 500;
  transition: color .2s;
}
.nav-links a:hover { color: var(--text-head); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform .3s, opacity .3s;
}
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* --- Buttons ---------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font);
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all .2s;
  text-decoration: none;
}
.btn-sm { padding: 6px 18px; font-size: .85rem; }
.btn-lg { padding: 14px 32px; font-size: 1rem; }
.btn-block { width: 100%; }

.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.btn-primary:hover {
  background: var(--accent-h);
  border-color: var(--accent-h);
  color: #fff;
  box-shadow: 0 0 20px rgba(59, 130, 246, .35);
}

.btn-outline {
  background: transparent;
  color: var(--accent-h);
  border-color: var(--border);
}
.btn-outline:hover {
  border-color: var(--accent);
  color: #fff;
}

/* --- Hero ------------------------------------------------- */
.hero {
  padding: 140px 0 80px;
  overflow: hidden;
}
.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.hero h1 {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.15;
  color: var(--text-head);
  letter-spacing: -.02em;
}
.hero-subtitle {
  margin-top: 20px;
  font-size: 1.18rem;
  color: var(--text-dim);
  max-width: 520px;
}
.hero-actions {
  margin-top: 32px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.hero-note {
  margin-top: 16px;
  font-size: .85rem;
  color: var(--text-dim);
}

/* Terminal mock */
.terminal {
  background: #0d1117;
  border: 1px solid #21262d;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.terminal-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: #161b22;
  border-bottom: 1px solid #21262d;
}
.terminal-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.terminal-dot.red   { background: #ff5f56; }
.terminal-dot.yellow { background: #ffbd2e; }
.terminal-dot.green  { background: #27c93f; }
.terminal-title {
  margin-left: 8px;
  font-size: .8rem;
  color: #8b949e;
  font-family: "SF Mono", "Fira Code", monospace;
}
.terminal-body {
  padding: 20px;
  font-family: "SF Mono", "Fira Code", "Cascadia Code", monospace;
  font-size: .85rem;
  line-height: 2;
}
.terminal-line {
  display: flex;
  align-items: center;
  gap: 10px;
}
.terminal-line .t-dim {
  margin-left: auto;
}
.terminal-line.result {
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid #21262d;
  font-weight: 600;
}
.t-green { color: var(--green); }
.t-red   { color: var(--red); }
.t-dim   { color: #6e7681; }

/* --- Section headers -------------------------------------- */
.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 56px;
}
.section-header h2 {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--text-head);
  line-height: 1.2;
  letter-spacing: -.015em;
}
.section-header p {
  margin-top: 16px;
  font-size: 1.1rem;
  color: var(--text-dim);
}

/* --- Problem / Comparison --------------------------------- */
.problem {
  padding: 96px 0;
  background: var(--bg-alt);
}
.comparison {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  max-width: 800px;
  margin: 0 auto;
}
.comparison-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
}
.comparison-card h3 {
  font-size: 1.15rem;
  color: var(--text-head);
  margin-bottom: 20px;
}
.comparison-card li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 8px 0;
  font-size: .95rem;
  color: var(--text-dim);
}
.comparison-card.new {
  border-color: var(--accent);
  box-shadow: 0 0 30px rgba(59, 130, 246, .1);
}
.comparison-card.new li { color: var(--text); }

/* --- How It Works ----------------------------------------- */
.how-it-works {
  padding: 96px 0;
}
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}
.step {
  text-align: center;
  padding: 32px 24px;
}
.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 20px;
}
.step-icon {
  margin: 0 auto 16px;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(59, 130, 246, .1);
  border-radius: 50%;
}
.step h3 {
  font-size: 1.15rem;
  color: var(--text-head);
  margin-bottom: 12px;
}
.step p {
  font-size: .95rem;
  color: var(--text-dim);
}

/* --- Features --------------------------------------------- */
.features {
  padding: 96px 0;
  background: var(--bg-alt);
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: border-color .3s, box-shadow .3s;
}
.feature-card:hover {
  border-color: var(--accent);
  box-shadow: 0 0 24px rgba(59, 130, 246, .08);
}
.feature-icon {
  margin-bottom: 16px;
}
.feature-card h3 {
  font-size: 1.1rem;
  color: var(--text-head);
  margin-bottom: 10px;
}
.feature-card p {
  font-size: .9rem;
  color: var(--text-dim);
  line-height: 1.7;
}

/* --- Pricing ---------------------------------------------- */
.pricing {
  padding: 96px 0;
}
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: start;
}
.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
  position: relative;
  transition: border-color .3s;
}
.pricing-card.featured {
  border-color: var(--accent);
  box-shadow: 0 0 40px rgba(59, 130, 246, .12);
  transform: scale(1.03);
}
.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: #fff;
  font-size: .75rem;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: .05em;
}
.pricing-tier {
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent-h);
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: 12px;
}
.pricing-price {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--text-head);
  line-height: 1;
}
.pricing-price span {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-dim);
}
.pricing-desc {
  margin-top: 8px;
  font-size: .9rem;
  color: var(--text-dim);
  margin-bottom: 24px;
}
.pricing-features {
  margin-bottom: 28px;
}
.pricing-features li {
  padding: 6px 0;
  font-size: .9rem;
  color: var(--text);
  position: relative;
  padding-left: 20px;
}
.pricing-features li::before {
  content: "\2713";
  position: absolute;
  left: 0;
  color: var(--green);
  font-weight: 700;
}
.pricing-example {
  text-align: center;
  margin-top: 40px;
  font-size: .95rem;
  color: var(--text-dim);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}
.pricing-example strong {
  color: var(--text);
}

/* --- FAQ -------------------------------------------------- */
.faq {
  padding: 96px 0;
  background: var(--bg-alt);
}
.faq-list {
  max-width: 720px;
  margin: 0 auto;
}
.faq-item {
  border-bottom: 1px solid var(--border);
}
.faq-item summary {
  padding: 20px 0;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-head);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: color .2s;
}
.faq-item summary:hover { color: var(--accent-h); }
.faq-item summary::after {
  content: "+";
  font-size: 1.4rem;
  color: var(--accent);
  transition: transform .3s;
}
.faq-item[open] summary::after {
  transform: rotate(45deg);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item p {
  padding: 0 0 20px;
  font-size: .95rem;
  color: var(--text-dim);
  line-height: 1.7;
}

/* --- CTA -------------------------------------------------- */
.cta {
  padding: 96px 0;
  text-align: center;
}
.cta h2 {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--text-head);
  margin-bottom: 16px;
}
.cta p {
  font-size: 1.1rem;
  color: var(--text-dim);
  margin-bottom: 32px;
}

/* --- Footer ----------------------------------------------- */
.site-footer {
  padding: 64px 0 32px;
  border-top: 1px solid var(--border);
  background: var(--bg);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
}
.footer-brand p {
  margin-top: 12px;
  font-size: .9rem;
  color: var(--text-dim);
}
.footer-col h4 {
  font-size: .85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--text-head);
  margin-bottom: 16px;
}
.footer-col a {
  display: block;
  padding: 4px 0;
  font-size: .9rem;
  color: var(--text-dim);
}
.footer-col a:hover { color: var(--text); }
.footer-bottom {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: .85rem;
  color: var(--text-dim);
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 900px) {
  .hero .container {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .hero h1 { font-size: 2.2rem; }
  .hero { padding: 120px 0 60px; }

  .comparison { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; gap: 24px; }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .pricing-grid { grid-template-columns: 1fr; max-width: 400px; margin-left: auto; margin-right: auto; }
  .pricing-card.featured { transform: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }

  .section-header h2 { font-size: 1.75rem; }
  .cta h2 { font-size: 1.75rem; }
}

@media (max-width: 600px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(10, 14, 39, .97);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-120%);
    transition: transform .3s ease;
  }
  .nav-links.open { transform: translateY(0); }

  .hero h1 { font-size: 1.8rem; }
  .hero-subtitle { font-size: 1rem; }
  .feature-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
}