/* ============================================
   LH Consulting — Styles
   ============================================ */

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

:root {
  --color-bg: #fafafa;
  --color-surface: #ffffff;
  --color-text: #1a1a1a;
  --color-text-secondary: #5a5a5a;
  --color-accent: #005d6c;
  --color-accent-light: #e4f0f2;
  --color-border: #e5e5e5;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --max-width: 1120px;
  --transition: 0.3s ease;
}

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

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  line-height: 1.25;
  letter-spacing: -0.02em;
}

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

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: transparent;
  transition: background var(--transition), box-shadow var(--transition);
}

.nav.scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: 0 1px 0 var(--color-border);
}

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-logo {
  display: flex;
  align-items: center;
}

.nav-logo-img {
  height: 48px;
  width: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color var(--transition);
}

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

.nav-cta {
  background: var(--color-accent);
  color: #fff !important;
  padding: 10px 20px;
  border-radius: 6px;
  transition: opacity var(--transition) !important;
}

.nav-cta:hover {
  opacity: 0.9;
}

.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(--color-text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.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);
}

/* --- Hero --- */
.hero {
  padding: 160px 0 120px;
  background: linear-gradient(180deg, var(--color-accent-light) 0%, var(--color-bg) 100%);
}

.hero-label {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: 20px;
}

.hero-title {
  font-size: clamp(36px, 5vw, 60px);
  font-weight: 700;
  margin-bottom: 24px;
  color: var(--color-text);
}

.hero-subtitle {
  font-size: 18px;
  color: var(--color-text-secondary);
  max-width: 560px;
  margin-bottom: 40px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* --- Buttons --- */
.btn {
  display: inline-block;
  padding: 14px 28px;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  font-family: var(--font-sans);
}

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

.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

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

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

/* --- Sections --- */
.section-label {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: 12px;
}

section h2 {
  font-size: clamp(28px, 3.5vw, 40px);
  font-weight: 700;
  margin-bottom: 20px;
}

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

.section-content p {
  color: var(--color-text-secondary);
  margin-bottom: 16px;
  font-size: 16px;
}

/* --- About --- */
.about {
  padding: 100px 0;
}

/* --- Services --- */
.services {
  padding: 100px 0;
  background: var(--color-surface);
}

.services h2 {
  margin-bottom: 48px;
}

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

.service-card {
  padding: 32px;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  transition: box-shadow var(--transition), transform var(--transition);
}

.service-card:hover {
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
  transform: translateY(-2px);
}

.service-icon {
  width: 48px;
  height: 48px;
  background: var(--color-accent-light);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  margin-bottom: 20px;
}

.service-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 10px;
}

.service-card p {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.65;
}

/* --- Approach --- */
.approach {
  padding: 100px 0;
}

.approach-steps {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.approach-step {
  display: flex;
  gap: 24px;
  align-items: flex-start;
}

.step-number {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-accent-light);
  min-width: 56px;
  letter-spacing: -0.02em;
  line-height: 1;
  padding-top: 4px;
  color: var(--color-accent);
  opacity: 0.25;
}

.approach-step h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.approach-step p {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.65;
}

/* --- Guarantee --- */
.guarantee {
  padding: 100px 0;
}

.guarantee-inner {
  max-width: 700px;
}

.guarantee-content p {
  color: var(--color-text-secondary);
  font-size: 16px;
  margin-bottom: 16px;
  line-height: 1.7;
}

/* --- Contact --- */
.contact {
  padding: 100px 0;
  background: var(--color-surface);
}

.contact-inner {
  max-width: 640px;
}

.contact-details {
  margin-bottom: 32px;
  line-height: 1.9;
}

.contact-details a {
  color: var(--color-accent);
  transition: opacity var(--transition);
}

.contact-details a:hover {
  opacity: 0.7;
}

.contact-text {
  font-size: 16px;
  color: var(--color-text-secondary);
  margin-bottom: 24px;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
}

.form-group input,
.form-group textarea {
  padding: 12px 14px;
  border: 1.5px solid var(--color-border);
  border-radius: 6px;
  font-size: 15px;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  transition: border-color var(--transition);
  outline: none;
}

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

.form-group textarea {
  resize: vertical;
}

.contact-form .btn {
  align-self: flex-start;
}

.form-status {
  font-size: 15px;
  font-weight: 500;
  margin-top: 4px;
}

/* --- Footer --- */
.footer {
  padding: 40px 0;
  border-top: 1px solid var(--color-border);
}

.footer-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-logo-img {
  height: 40px;
  width: auto;
}

.footer-copy {
  font-size: 13px;
  color: var(--color-text-secondary);
}

/* --- Responsive --- */
@media (max-width: 900px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .section-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

@media (max-width: 640px) {
  .nav-links {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 260px;
    background: var(--color-surface);
    flex-direction: column;
    padding: 80px 32px 32px;
    gap: 24px;
    transform: translateX(100%);
    transition: transform var(--transition);
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.08);
  }

  .nav-links.open {
    transform: translateX(0);
  }

  .nav-toggle {
    display: flex;
  }

  .nav-cta {
    text-align: center;
    width: 100%;
  }

  .hero {
    padding: 130px 0 80px;
  }

  .hero-title {
    font-size: 32px;
  }

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

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

  .footer-container {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

  .about,
  .services,
  .approach,
  .guarantee,
  .contact {
    padding: 72px 0;
  }
}