/* === Variables === */
:root {
  --bg: #f8f9fa;
  --surface: #ffffff;
  --text: #1a1a2e;
  --text-muted: #5a5a7a;
  --primary: #0a5e73;
  --primary-light: #0d7a96;
  --accent: #00c2a8;
  --radius: 12px;
}

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

html {
  scroll-behavior: smooth;
}

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

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }

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

/* === Header === */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: 3px;
  color: var(--primary);
}

.nav {
  display: flex;
  gap: 32px;
}

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

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

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

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

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

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

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

/* === Hero === */
.hero {
  position: relative;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 50%, #0a8a7a 100%);
  color: #fff;
  padding: 160px 0 120px;
  text-align: center;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 50%, rgba(0, 194, 168, 0.15) 0%, transparent 60%),
              radial-gradient(circle at 70% 80%, rgba(255, 255, 255, 0.05) 0%, transparent 40%);
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 700;
  line-height: 1.2;
  max-width: 700px;
  margin: 0 auto 20px;
  position: relative;
}

.highlight {
  color: var(--accent);
}

.hero-sub {
  font-size: 1.1rem;
  opacity: 0.85;
  max-width: 520px;
  margin: 0 auto 36px;
  position: relative;
}

.btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 14px 36px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
  position: relative;
}

.btn:hover {
  background: #00a891;
  transform: translateY(-1px);
}

.hero-wave {
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  line-height: 0;
}

.hero-wave svg {
  width: 100%;
  height: 80px;
}

/* === Services === */
.services {
  padding: 80px 0;
}

.services h2,
.about h2,
.contact h2 {
  text-align: center;
  font-size: 2rem;
  margin-bottom: 12px;
  color: var(--text);
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 48px;
}

.card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 36px 28px;
  border: 1px solid rgba(0, 0, 0, 0.06);
  transition: box-shadow 0.3s, transform 0.3s;
}

.card:hover {
  box-shadow: 0 8px 30px rgba(10, 94, 115, 0.1);
  transform: translateY(-4px);
}

.card-icon {
  width: 48px;
  height: 48px;
  color: var(--primary);
  margin-bottom: 20px;
}

.card-icon svg {
  width: 100%;
  height: 100%;
}

.card h3 {
  font-size: 1.15rem;
  margin-bottom: 10px;
  color: var(--text);
}

.card p {
  font-size: 0.93rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* === About === */
.about {
  padding: 80px 0;
  background: var(--surface);
}

.about-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-text p {
  color: var(--text-muted);
  margin-top: 16px;
  font-size: 0.95rem;
  line-height: 1.7;
}

.about-text p:first-of-type {
  margin-top: 24px;
}

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

.stat {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  background: var(--bg);
  border-radius: var(--radius);
}

.stat-icon {
  width: 36px;
  height: 36px;
  color: var(--primary);
  flex-shrink: 0;
}

.stat-icon svg {
  width: 100%;
  height: 100%;
}

.stat-label {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text);
}

/* === Contact === */
.contact {
  padding: 80px 0;
}

.contact-sub {
  text-align: center;
  color: var(--text-muted);
  margin-bottom: 40px;
}

.contact-form {
  max-width: 600px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid rgba(0, 0, 0, 0.1);
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.9rem;
  background: var(--surface);
  color: var(--text);
  transition: border-color 0.2s;
  outline: none;
}

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

.contact-form textarea {
  resize: vertical;
}

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

/* === Footer === */
.footer {
  background: var(--text);
  color: rgba(255, 255, 255, 0.6);
  padding: 32px 0;
}

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

.footer .logo {
  color: #fff;
}

.footer p {
  font-size: 0.85rem;
}

/* === Mobile === */
@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
  }

  .nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(12px);
    flex-direction: column;
    align-items: center;
    gap: 0;
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  }

  .nav.open {
    max-height: 300px;
    padding: 16px 0;
  }

  .nav a {
    padding: 12px 0;
    font-size: 1rem;
  }

  .hero {
    padding: 140px 0 100px;
  }

  .about-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

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