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

:root {
  /* ── Brand Palette ── */
  --ink:        oklch(0.18 0.05 248);   /* Deep Navy */
  --ink-mid:    oklch(0.38 0.05 248);   /* Slate */
  --ink-muted:  oklch(0.55 0.03 248);   /* Muted */
  --signal:     oklch(0.54 0.17 172);   /* Signal Green — primary accent */
  --amber:      oklch(0.70 0.14 62);    /* Warm Amber — secondary accent */
  --paper:      oklch(0.97 0.01 80);    /* Warm White */
  --paper-mid:  oklch(0.93 0.01 80);    /* Light Grey */
  --paper-dark: oklch(0.88 0.01 248);   /* Cool Grey */

  --font-display: 'Space Grotesk', sans-serif;
  --font-body:    'DM Sans', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  line-height: 1.6;
  color: var(--ink);
  background: var(--paper);
}

header {
  background: var(--ink);
  color: var(--paper);
  padding: 1rem 0;
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

nav {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 2rem;
}

.logo {
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  font-family: var(--font-display);
  color: var(--paper);
}

nav ul {
  list-style: none;
  display: flex;
  gap: 2rem;
}

nav a {
  color: var(--paper);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
  position: relative;
}

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

nav a::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--signal);
  transition: width 0.3s ease;
}

nav a:hover::after {
  width: 100%;
}

.hero {
  background: var(--ink);
  color: var(--paper);
  padding: 150px 2rem 100px;
  text-align: center;
  margin-top: 60px;
}

.hero h1 {
  font-size: 3.5rem;
  margin-bottom: 1rem;
  font-weight: 800;
  font-family: var(--font-display);
  letter-spacing: -0.04em;
  line-height: 1.1;
}

.hero h1 span {
  color: var(--signal);
}

.hero p {
  font-size: 1.1rem;
  margin-bottom: 2rem;
  opacity: 0.9;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.btn {
  display: inline-block;
  padding: 13px 24px;
  background: var(--signal);
  color: #fff;
  text-decoration: none;
  border-radius: 10px;
  font-weight: 600;
  font-family: var(--font-body);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  cursor: pointer;
  border: none;
  font-size: 1rem;
}

.btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(46, 158, 122, 0.3);
}

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

.btn-secondary:hover {
  background: rgba(250, 250, 248, 0.1);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

section {
  padding: 80px 0;
}

.section-title {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 3rem;
  color: var(--ink);
  font-weight: 700;
  font-family: var(--font-display);
  letter-spacing: -0.03em;
}

.section-title span {
  color: var(--signal);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.card {
  background: #fff;
  padding: 2rem;
  border-radius: 16px;
  border: 1px solid var(--paper-dark);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
}

.card h3 {
  color: var(--ink);
  margin-bottom: 1rem;
  font-size: 1.3rem;
  font-weight: 700;
  font-family: var(--font-display);
}

.card p {
  color: var(--ink-muted);
  line-height: 1.8;
}

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

#services {
  background: var(--paper-mid);
}

#products {
  background: var(--paper);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--text-dark);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--paper-dark);
  border-radius: 10px;
  font-family: var(--font-body);
  font-size: 1rem;
  transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--signal);
  box-shadow: 0 0 0 3px rgba(46, 158, 122, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 150px;
}

.form-container {
  background: #fff;
  padding: 2rem;
  border-radius: 16px;
  border: 1px solid var(--paper-dark);
  max-width: 600px;
  margin: 0 auto;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

#contact {
  background: var(--paper-mid);
}

#book-service {
  background: var(--paper-mid);
}

footer {
  background: var(--ink);
  color: var(--paper);
  padding: 3rem 0 1rem;
  text-align: center;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding: 0 2rem;
}

.footer-section h4 {
  margin-bottom: 1rem;
  color: var(--signal);
  font-family: var(--font-display);
}

.footer-section a {
  color: oklch(0.55 0.03 248);
  text-decoration: none;
  transition: color 0.3s ease;
  display: block;
  margin-bottom: 0.5rem;
}

.footer-section a:hover {
  color: var(--signal);
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: #999;
}

.success-message {
  background: #d4edda;
  color: #155724;
  padding: 1rem;
  border-radius: 5px;
  margin-bottom: 1rem;
  display: none;
}

.error-message {
  background: #f8d7da;
  color: #721c24;
  padding: 1rem;
  border-radius: 5px;
  margin-bottom: 1rem;
  display: none;
}

@media (max-width: 768px) {
  nav ul {
    gap: 1rem;
    font-size: 0.9rem;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

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

  .section-title {
    font-size: 2rem;
  }

  section {
    padding: 50px 0;
  }
}