/* =============================================
   Inflecta — styles.css
   Design: Clean, light, trustworthy. Steve Jobs minimal.
   ============================================= */

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

:root {
  --white:       #FFFFFF;
  --off-white:   #F8FAFC;
  --border:      #E2E8F0;
  --text-primary:   #0F172A;
  --text-secondary: #64748B;
  --text-muted:     #94A3B8;
  --accent:      #1D4ED8;
  --accent-hover:#1E40AF;
  --accent-light:#EFF6FF;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --radius: 12px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.07), 0 2px 6px rgba(0,0,0,0.04);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.09), 0 4px 12px rgba(0,0,0,0.05);
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font);
  color: var(--text-primary);
  background: var(--white);
  line-height: 1.6;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---- Typography ---- */
h1 {
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}

h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

h3 {
  font-size: 1.15rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-primary);
}

p {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.75;
}

a {
  color: inherit;
  text-decoration: none;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font);
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: 8px;
  padding: 12px 24px;
  cursor: pointer;
  transition: all 0.18s ease;
  border: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: var(--white);
}
.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(29, 78, 216, 0.28);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}
.btn-ghost:hover {
  background: var(--off-white);
  border-color: #CBD5E1;
  color: var(--text-primary);
}

.btn-nav {
  background: var(--accent);
  color: var(--white);
  padding: 9px 18px;
  font-size: 0.88rem;
}
.btn-nav:hover {
  background: var(--accent-hover);
}

.btn-large {
  padding: 15px 32px;
  font-size: 1rem;
  font-weight: 600;
}

.btn-full {
  width: 100%;
}

/* ---- Navigation ---- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a:not(.btn) {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 450;
  transition: color 0.15s;
}
.nav-links a:not(.btn):hover {
  color: var(--text-primary);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all 0.2s ease;
}
.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); }

.nav-mobile {
  display: none;
  flex-direction: column;
  padding: 16px 24px 20px;
  gap: 4px;
  border-top: 1px solid var(--border);
  background: var(--white);
}
.nav-mobile a {
  font-size: 1rem;
  color: var(--text-secondary);
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-weight: 450;
}
.nav-mobile a:last-child {
  border-bottom: none;
  color: var(--accent);
  font-weight: 500;
}
.nav-mobile.open {
  display: flex;
}

/* ---- Hero ---- */
.hero {
  padding: 160px 0 120px;
  text-align: center;
}

.eyebrow {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 24px;
}

.hero h1 {
  margin-bottom: 24px;
}

.br-desktop { display: inline; }

.hero-sub {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 580px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---- Pain ---- */
.pain {
  padding: 100px 0;
  background: var(--off-white);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.pain h2 {
  text-align: center;
  margin-bottom: 52px;
}

.pain-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 52px;
}

.pain-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  box-shadow: var(--shadow-sm);
}

.pain-icon {
  font-size: 1.6rem;
  margin-bottom: 16px;
}

.pain-card p {
  font-size: 0.97rem;
  line-height: 1.7;
}

.pain-closer {
  text-align: center;
  font-size: 1.05rem;
  max-width: 580px;
  margin: 0 auto;
  line-height: 1.75;
}

/* ---- How It Works ---- */
.how {
  padding: 100px 0;
}

.how h2 {
  text-align: center;
  margin-bottom: 12px;
}

.section-sub {
  text-align: center;
  font-size: 1.05rem;
  max-width: 520px;
  margin: 0 auto 60px;
}

.steps {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 720px;
  margin: 0 auto;
}

.step {
  padding: 40px 0;
}

.step-divider {
  height: 1px;
  background: var(--border);
}

.step-number {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 14px;
}

.step h3 {
  font-size: 1.25rem;
  margin-bottom: 12px;
}

.step p {
  font-size: 1rem;
  max-width: 580px;
}

/* ---- Services ---- */
.services {
  padding: 100px 0;
  background: var(--off-white);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.services h2 {
  text-align: center;
  margin-bottom: 12px;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.service-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 32px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}
.service-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.service-card h3 {
  font-size: 1.1rem;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.service-card p {
  font-size: 0.96rem;
}

/* ---- Examples ---- */
.examples {
  padding: 100px 0;
}

.examples h2 {
  text-align: center;
  margin-bottom: 12px;
}

.examples-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 820px;
  margin: 0 auto;
}

.example {
  padding: 48px 0;
  border-bottom: 1px solid var(--border);
}
.example:last-child {
  border-bottom: none;
}

.example-label {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}

.example h3 {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 14px;
  color: var(--text-primary);
  line-height: 1.35;
}

.example p {
  font-size: 1rem;
  max-width: 680px;
}

/* ---- Why Inflecta ---- */
.why {
  padding: 100px 0;
  background: var(--off-white);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.why-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.why-text h2 {
  margin-bottom: 28px;
}

.why-text p {
  margin-bottom: 18px;
  font-size: 1rem;
}
.why-text p:last-child {
  margin-bottom: 0;
}

.why-stats {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.stat {
  border-left: 3px solid var(--accent);
  padding-left: 24px;
}

.stat-number {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  line-height: 1.1;
  margin-bottom: 6px;
}

.stat-label {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ---- Contact ---- */
.contact {
  padding: 100px 0;
}

.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.contact-text h2 {
  margin-bottom: 20px;
}

.contact-text p {
  margin-bottom: 32px;
  font-size: 1rem;
}

.contact-alt {
  margin-top: 20px;
  font-size: 0.9rem;
  margin-bottom: 0 !important;
}

.contact-alt a {
  color: var(--accent);
  font-weight: 500;
}
.contact-alt a:hover {
  text-decoration: underline;
}

/* ---- Form ---- */
.contact-form {
  background: var(--off-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 36px;
  box-shadow: var(--shadow-sm);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 7px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  font-family: var(--font);
  font-size: 0.95rem;
  color: var(--text-primary);
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 11px 14px;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(29, 78, 216, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 110px;
}

/* ---- Footer ---- */
.footer {
  background: var(--text-primary);
  padding: 60px 0;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: start;
  gap: 40px;
}

.footer-brand .logo {
  color: var(--white);
  font-size: 1.1rem;
  display: block;
  margin-bottom: 8px;
}

.footer-brand p {
  color: #94A3B8;
  font-size: 0.875rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: center;
}

.footer-links a {
  font-size: 0.875rem;
  color: #94A3B8;
  transition: color 0.15s;
}
.footer-links a:hover {
  color: var(--white);
}

.footer-location {
  text-align: right;
}

.footer-location p {
  color: #94A3B8;
  font-size: 0.875rem;
}

.footer-copy {
  margin-top: 8px;
  color: #64748B !important;
  font-size: 0.8rem !important;
}

/* ---- Responsive ---- */
@media (max-width: 900px) {
  .why-inner,
  .contact-inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .pain-grid {
    grid-template-columns: 1fr;
  }
  .services-grid {
    grid-template-columns: 1fr;
  }
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-links {
    align-items: flex-start;
  }
  .footer-location {
    text-align: left;
  }
}

@media (max-width: 680px) {
  .nav-links {
    display: none;
  }
  .nav-toggle {
    display: flex;
  }
  .hero {
    padding: 120px 0 80px;
  }
  .br-desktop {
    display: none;
  }
  .hero-actions {
    flex-direction: column;
    align-items: center;
  }
  .hero-actions .btn {
    width: 100%;
    max-width: 320px;
  }
  .contact-form {
    padding: 28px 20px;
  }
  h2 {
    font-size: 1.8rem;
  }
  .pain, .how, .services, .examples, .why, .contact {
    padding: 72px 0;
  }
}