@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&display=swap');

:root {
  --bg: #ffffff;
  --ink: #000000;
  --muted: #4a4a4a;
  --accent: #FFFF00;
  --line: #e0e0e0;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0a0a0a;
    --ink: #ffffff;
    --muted: #b0b0b0;
    --line: #2a2a2a;
  }
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* HEADER */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
  padding: 1rem 0;
}

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

.logo-link {
  display: block;
  line-height: 0;
}

.logo-link img {
  display: block;
  height: 40px;
  width: auto;
}

nav {
  display: flex;
  gap: 2rem;
  align-items: center;
}

nav a {
  color: var(--ink);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9375rem;
  transition: color 0.2s;
}

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

.btn-nav {
  background: var(--accent);
  color: var(--ink);
  padding: 0.5rem 1.25rem;
  border-radius: 6px;
  font-weight: 700;
  transition: transform 0.1s, box-shadow 0.2s;
}

.btn-nav:hover {
  color: var(--ink);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(255, 255, 0, 0.3);
}

.btn-nav:active {
  transform: translateY(1px);
}

/* TYPOGRAPHY */
h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  margin-bottom: 1.5rem;
}

h1 em {
  font-style: normal;
  color: var(--accent);
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-decoration-thickness: 3px;
  text-underline-offset: 4px;
}

h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin-bottom: 1rem;
}

h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

p {
  color: var(--muted);
  margin-bottom: 1rem;
}

/* BUTTONS */
.btn-primary {
  display: inline-block;
  background: var(--accent);
  color: var(--ink);
  padding: 0.875rem 2rem;
  border-radius: 8px;
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: transform 0.1s, box-shadow 0.2s;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 255, 0, 0.4);
}

.btn-primary:active {
  transform: translateY(1px);
}

/* HERO */
.hero {
  padding: 6rem 0 8rem;
  text-align: center;
}

.hero-lead {
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  max-width: 700px;
  margin: 0 auto 2.5rem;
  color: var(--muted);
}

/* SERVICES */
.services {
  padding: 6rem 0;
  background: var(--bg);
}

.services h2 {
  text-align: center;
  margin-bottom: 4rem;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.service-card {
  padding: 2rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  transition: border-color 0.3s, transform 0.2s;
}

.service-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
}

.service-icon {
  width: 48px;
  height: 48px;
  color: var(--accent);
  margin-bottom: 1.25rem;
}

.service-card h3 {
  color: var(--ink);
}

.service-card p {
  font-size: 0.9375rem;
  line-height: 1.7;
}

/* WHY US */
.why-us {
  padding: 6rem 0;
  background: var(--bg);
}

.why-us .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.why-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.why-list li {
  padding-left: 2rem;
  position: relative;
  color: var(--muted);
  line-height: 1.7;
}

.why-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.5rem;
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
}

.why-list strong {
  color: var(--ink);
  font-weight: 700;
}

.why-visual {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.stat-block {
  padding: 2.5rem;
  border: 2px solid var(--line);
  border-radius: 12px;
  text-align: center;
}

.stat-number {
  font-size: 4rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 1rem;
  color: var(--muted);
  font-weight: 600;
}

@media (max-width: 768px) {
  .why-us .container {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
}

/* CONTACT */
.contact {
  padding: 6rem 0;
  background: var(--bg);
  text-align: center;
}

.contact h2 {
  margin-bottom: 1rem;
}

.contact-lead {
  font-size: 1.125rem;
  max-width: 600px;
  margin: 0 auto 3rem;
}

.contact-form {
  max-width: 600px;
  margin: 0 auto;
  text-align: left;
}

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

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

.form-group label {
  font-weight: 600;
  font-size: 0.9375rem;
  margin-bottom: 0.5rem;
  color: var(--ink);
}

.form-group input,
.form-group textarea {
  padding: 0.875rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  font-family: var(--font-body);
  font-size: 1rem;
  background: var(--bg);
  color: var(--ink);
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.contact-form .btn-primary {
  width: 100%;
  margin-top: 1rem;
}

@media (max-width: 640px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

/* FOOTER */
.site-footer {
  padding: 2rem 0;
  border-top: 1px solid var(--line);
  text-align: center;
}

.site-footer p {
  color: var(--muted);
  font-size: 0.875rem;
  margin: 0;
}

/* RESPONSIVE NAV */
@media (max-width: 640px) {
  nav {
    gap: 1rem;
  }
  
  nav a:not(.btn-nav) {
    display: none;
  }
}

/* ACCESSIBILITY */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}