/* ===== AI SEO Marketing Site ===== */
:root {
  --bg: #0f172a;
  --bg-dark: #020617;
  --card: #111827;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --accent: #22d3ee;
  --accent-blue: #3b82f6;
  --border: #1f2937;
  --input-bg: #020617;
  --radius: 12px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: Inter, system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ===== Nav ===== */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1rem;
  padding-bottom: 1rem;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text);
  text-decoration: none;
}

.logo span {
  color: var(--accent);
}

.nav-cta {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid var(--accent);
  padding: 0.5rem 1.25rem;
  border-radius: 8px;
  transition: background 0.2s, color 0.2s;
}

.nav-cta:hover {
  background: var(--accent);
  color: var(--bg);
}

/* ===== Hero ===== */
.hero {
  padding: 6rem 0 5rem;
  text-align: center;
  background: linear-gradient(180deg, var(--bg) 0%, var(--bg-dark) 100%);
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

.gradient-text {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-blue) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--muted);
  max-width: 600px;
  margin: 0 auto 2.5rem;
  line-height: 1.7;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border: none;
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.95rem;
  font-family: inherit;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.15s, box-shadow 0.15s;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(34, 211, 238, 0.2);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-blue) 100%);
  color: #022c22;
  padding: 0.75rem 2rem;
}

.btn-lg {
  padding: 1rem 2.5rem;
  font-size: 1.05rem;
}

.btn-full {
  width: 100%;
}

/* ===== Sections ===== */
.section {
  padding: 5rem 0;
}

.section-dark {
  background: var(--bg-dark);
}

.section-title {
  font-size: clamp(1.5rem, 3.5vw, 2.25rem);
  font-weight: 800;
  text-align: center;
  margin-bottom: 1rem;
  letter-spacing: -0.01em;
}

.section-sub {
  text-align: center;
  color: var(--muted);
  max-width: 650px;
  margin: 0 auto 3rem;
  font-size: 1.05rem;
  line-height: 1.7;
}

/* ===== Stats ===== */
.stat-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.stat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem 1.5rem;
  text-align: center;
}

.stat-value {
  font-size: 2.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-blue) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.5rem;
}

.stat-label {
  color: var(--muted);
  font-size: 0.95rem;
}

/* ===== Service Cards ===== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem 1.5rem;
  transition: border-color 0.2s, transform 0.2s;
}

.card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.card-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.card p {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ===== Steps ===== */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
}

.step {
  text-align: center;
  padding: 1rem;
}

.step-number {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-blue) 100%);
  color: var(--bg);
  font-size: 1.5rem;
  font-weight: 800;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.step h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.step p {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.6;
  max-width: 300px;
  margin: 0 auto;
}

/* ===== Audit Form ===== */
.audit-form {
  max-width: 640px;
  margin: 0 auto;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.5rem 2rem;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group:first-child {
  grid-column: 1 / -1;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--muted);
}

.optional {
  font-weight: 400;
  color: #6b7280;
}

.form-group input {
  border: 1px solid #334155;
  border-radius: 8px;
  background: var(--input-bg);
  color: var(--text);
  padding: 0.75rem 1rem;
  font-size: 0.95rem;
  font-family: inherit;
  outline: none;
  transition: border-color 0.15s;
}

.form-group input:focus {
  border-color: var(--accent);
}

.form-group input::placeholder {
  color: #4b5563;
}

/* ===== Form Success ===== */
.form-success {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 3rem 2rem;
}

.success-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.form-success h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.form-success p {
  color: var(--muted);
  font-size: 1rem;
}

.hidden {
  display: none !important;
}

/* ===== Footer ===== */
.footer {
  border-top: 1px solid var(--border);
  padding: 3rem 0;
}

.footer-inner {
  text-align: center;
}

.footer-inner .logo {
  display: inline-block;
  margin-bottom: 0.75rem;
}

.footer-inner p {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}

.footer-contact a {
  color: var(--accent);
  text-decoration: none;
}

.footer-contact a:hover {
  text-decoration: underline;
}

/* ===== Responsive ===== */
@media (max-width: 640px) {
  .hero {
    padding: 4rem 0 3rem;
  }

  .section {
    padding: 3.5rem 0;
  }

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

  .audit-form {
    padding: 1.5rem 1.25rem;
  }

  .stat-row {
    grid-template-columns: 1fr;
  }
}