/* ============================================
   Ridge8 — Landing Page Styles
   ============================================ */

:root {
  --color-bg: #fafafa;
  --color-surface: #ffffff;
  --color-text: #1a1a2e;
  --color-text-secondary: #555570;
  --color-primary: #4f46e5;
  --color-primary-dark: #4338ca;
  --color-primary-light: #eef2ff;
  --color-accent: #06b6d4;
  --color-border: #e5e5ef;
  --color-dark: #0f0f23;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

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

/* ---- Header ---- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 16px 0;
  transition: background 0.3s, box-shadow 0.3s, padding 0.3s;
}

.header-scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-sm);
  padding: 10px 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

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

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

.nav a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color 0.2s;
}

.nav a:hover {
  color: var(--color-text);
}

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.mobile-menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

.mobile-menu-btn.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.mobile-menu-btn.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: inherit;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 12px 28px;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-sm {
  padding: 8px 20px;
  font-size: 0.85rem;
  border-radius: 8px;
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1rem;
}

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

.btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(79, 70, 229, 0.3);
}

.btn-outline {
  background: transparent;
  color: var(--color-text);
  border: 1.5px solid var(--color-border);
}

.btn-outline:hover {
  border-color: var(--color-text);
}

/* ---- Hero ---- */
.hero {
  padding: 160px 0 100px;
  text-align: center;
  background: linear-gradient(180deg, var(--color-primary-light) 0%, var(--color-bg) 100%);
}

.hero-content {
  max-width: 720px;
  margin: 0 auto;
}

.hero-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  background: white;
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 24px;
  border: 1px solid var(--color-border);
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--color-text-secondary);
  max-width: 540px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 64px;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
}

.stat strong {
  display: block;
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.stat span {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

/* ---- Section shared ---- */
.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.section-desc {
  color: var(--color-text-secondary);
  max-width: 520px;
  font-size: 1.05rem;
  line-height: 1.7;
}

/* ---- Services ---- */
.services {
  padding: 100px 0;
}

.services .section-desc {
  margin-bottom: 56px;
}

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

.service-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px;
  transition: box-shadow 0.3s, transform 0.2s;
}

.service-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.service-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: 14px;
  margin-bottom: 20px;
}

.service-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.service-card > p {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  margin-bottom: 20px;
  line-height: 1.6;
}

.service-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.service-features li {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  padding-left: 20px;
  position: relative;
}

.service-features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  background: var(--color-primary);
  border-radius: 50%;
}

/* ---- Why Us ---- */
.why-us {
  padding: 100px 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.why-us-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.why-us-content > p {
  color: var(--color-text-secondary);
  margin-bottom: 32px;
  line-height: 1.7;
}

.benefits {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.benefit {
  display: flex;
  gap: 16px;
}

.benefit-icon {
  width: 36px;
  height: 36px;
  min-width: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: 10px;
}

.benefit strong {
  display: block;
  font-size: 0.95rem;
  margin-bottom: 2px;
}

.benefit p {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}

/* Visual card */
.visual-card {
  background: var(--color-dark);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 40px;
}

.visual-metric {
  margin-bottom: 32px;
}

.metric-value {
  display: block;
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: #818cf8;
}

.metric-label {
  font-size: 0.95rem;
  color: #9999b0;
  margin-top: 4px;
  display: block;
}

.visual-bar-group {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.visual-bar span {
  display: block;
  font-size: 0.8rem;
  color: #9999b0;
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.bar {
  height: 12px;
  background: #1e1e3a;
  border-radius: 6px;
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  background: #555580;
  border-radius: 6px;
  transition: width 1s ease;
}

.bar-fill-accent {
  background: linear-gradient(90deg, #818cf8, #06b6d4);
}

/* ---- Process ---- */
.process {
  padding: 100px 0;
  text-align: center;
}

.process .section-title {
  margin-bottom: 56px;
}

.process-steps {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
}

.step {
  flex: 1;
  max-width: 220px;
  padding: 0 16px;
}

.step-num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.step h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.step p {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
}

.step-connector {
  width: 48px;
  min-width: 48px;
  height: 2px;
  background: var(--color-border);
  margin-top: 24px;
}

/* ---- CTA ---- */
.cta {
  padding: 100px 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
}

.cta-box {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.cta-box h2 {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.cta-box > p {
  color: var(--color-text-secondary);
  margin-bottom: 36px;
  font-size: 1.05rem;
}

.cta-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
  text-align: left;
}

.form-row {
  display: flex;
  gap: 12px;
}

.cta-form input,
.cta-form textarea {
  width: 100%;
  padding: 14px 18px;
  font-family: inherit;
  font-size: 0.95rem;
  border: 1.5px solid var(--color-border);
  border-radius: 10px;
  background: var(--color-bg);
  color: var(--color-text);
  outline: none;
  transition: border-color 0.2s;
}

.cta-form input:focus,
.cta-form textarea:focus {
  border-color: var(--color-primary);
}

.cta-form textarea {
  resize: vertical;
}

.cta-form .btn {
  width: 100%;
  margin-top: 4px;
}

.cta-success {
  color: var(--color-primary);
  font-weight: 600;
  font-size: 1.05rem;
  margin-top: 16px;
}

/* ---- Footer ---- */
.footer {
  background: var(--color-dark);
  color: #b0b0c8;
  padding: 64px 0 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 48px;
  padding-bottom: 48px;
}

.footer-brand .logo {
  color: #fff;
  margin-bottom: 12px;
  display: inline-block;
}

.footer-brand p {
  max-width: 280px;
  font-size: 0.9rem;
  line-height: 1.6;
}

.footer-links {
  display: flex;
  gap: 64px;
}

.footer-links h4 {
  color: #fff;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 16px;
}

.footer-links a {
  display: block;
  font-size: 0.9rem;
  margin-bottom: 10px;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: #fff;
}

.footer-bottom {
  border-top: 1px solid #1e1e3a;
  padding: 24px 0;
  text-align: center;
  font-size: 0.85rem;
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(12px);
    padding: 24px;
    gap: 16px;
    border-bottom: 1px solid var(--color-border);
  }

  .nav-open {
    display: flex;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .hero {
    padding: 130px 0 72px;
  }

  .hero h1 {
    font-size: 2.25rem;
  }

  .hero-desc {
    font-size: 1rem;
  }

  .hero-stats {
    gap: 24px;
  }

  .stat strong {
    font-size: 1.35rem;
  }

  .section-title {
    font-size: 1.75rem;
  }

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

  .why-us-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .process-steps {
    flex-direction: column;
    align-items: center;
    gap: 8px;
  }

  .step {
    max-width: 320px;
  }

  .step-connector {
    width: 2px;
    height: 24px;
    margin: 0;
  }

  .form-row {
    flex-direction: column;
  }

  .footer-inner {
    flex-direction: column;
    gap: 36px;
  }

  .footer-links {
    gap: 40px;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.85rem;
  }

  .hero-stats {
    flex-direction: column;
    gap: 16px;
  }

  .service-card {
    padding: 28px;
  }

  .visual-card {
    padding: 28px;
  }

  .metric-value {
    font-size: 2.25rem;
  }
}