:root {
  --bg: #f5f8fc;
  --surface: #ffffff;
  --surface-alt: #eaf0f8;
  --text: #10243f;
  --text-muted: #4a5c75;
  --primary: #0f6f9c;
  --primary-dark: #0a4f70;
  --accent: #1f9f86;
  --border: #c9d6e4;
  --shadow: 0 16px 40px rgba(16, 36, 63, 0.1);
}

body.dark {
  --bg: #0c1726;
  --surface: #122033;
  --surface-alt: #0f1b2c;
  --text: #e7eef8;
  --text-muted: #a6b6cb;
  --primary: #33a7d6;
  --primary-dark: #2382aa;
  --accent: #3bc8ab;
  --border: #2a3a51;
  --shadow: 0 20px 45px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Plus Jakarta Sans", "Segoe UI", sans-serif;
  background: radial-gradient(circle at top right, rgba(31, 159, 134, 0.18), transparent 42%),
    linear-gradient(180deg, var(--bg), var(--surface-alt));
  color: var(--text);
  line-height: 1.6;
  transition: background 0.3s ease, color 0.3s ease;
}

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

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

.container {
  width: min(1120px, 92%);
  margin: 0 auto;
}

.section {
  padding: 5rem 0;
}

.eyebrow {
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

h1,
h2,
h3 {
  font-family: "Manrope", "Segoe UI", sans-serif;
  line-height: 1.2;
  margin-top: 0;
}

h1 {
  font-size: clamp(2rem, 5vw, 3.6rem);
  margin-bottom: 1rem;
}

h2 {
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  margin-bottom: 1.1rem;
}

h3 {
  font-size: 1.15rem;
  margin-bottom: 0.75rem;
}

p {
  margin-top: 0;
  color: var(--text-muted);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  border: 1px solid transparent;
  background: var(--primary);
  color: #fff;
  font-weight: 700;
  padding: 0.78rem 1.2rem;
  border-radius: 0.7rem;
  transition: transform 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
  background: var(--primary-dark);
  box-shadow: var(--shadow);
}

.btn-sm {
  padding: 0.6rem 0.95rem;
  font-size: 0.92rem;
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}

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

.btn-outline:hover {
  background: var(--surface);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  border-bottom: 1px solid var(--border);
}

.navbar {
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  font-family: "Manrope", "Segoe UI", sans-serif;
  font-size: 1.12rem;
  font-weight: 800;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.1rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-menu a {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-muted);
  position: relative;
}

.nav-menu a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width 0.25s ease;
}

.nav-menu a:hover::after,
.nav-menu a:focus-visible::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

.theme-toggle {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: 999px;
  padding: 0.42rem;
  font-size: 0.78rem;
  min-width: 84px;
  cursor: pointer;
  display: inline-flex;
  justify-content: space-around;
  gap: 0.35rem;
}

.theme-toggle .moon {
  color: var(--text-muted);
}

body.dark .theme-toggle .sun {
  color: var(--text-muted);
}

body.dark .theme-toggle .moon {
  color: var(--text);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text);
}

.hero {
  padding-top: 6rem;
}

.hero-layout {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 2rem;
  align-items: center;
}

.lead {
  font-size: 1.08rem;
  max-width: 60ch;
}

.hero-cta {
  display: flex;
  gap: 0.8rem;
  margin: 1.5rem 0 1.7rem;
  flex-wrap: wrap;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8rem;
}

.hero-stats article {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.85rem;
  padding: 0.9rem;
  box-shadow: var(--shadow);
}

.hero-stats h2 {
  margin-bottom: 0.3rem;
  font-size: 1.35rem;
}

.hero-stats p {
  margin: 0;
  font-size: 0.88rem;
}

.hero-card {
  background: linear-gradient(135deg, color-mix(in srgb, var(--primary) 20%, transparent), var(--surface));
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.5rem;
  box-shadow: var(--shadow);
}

.hero-card ul {
  margin: 0 0 1rem;
  padding-left: 1.1rem;
  color: var(--text-muted);
}

.link-arrow {
  color: var(--primary);
  font-weight: 700;
}

.two-col {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.3rem;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.2rem;
  box-shadow: 0 8px 20px rgba(16, 36, 63, 0.08);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.card:hover {
  transform: translateY(-5px);
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
  box-shadow: var(--shadow);
}

.project-card a {
  font-weight: 700;
  color: var(--primary);
}

.testimonial-card span {
  display: block;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.cta {
  padding-top: 2rem;
}

.cta-box {
  background: linear-gradient(120deg, var(--primary), var(--accent));
  color: #fff;
  border-radius: 1.1rem;
  padding: 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.cta-box p,
.cta-box .eyebrow {
  color: rgba(255, 255, 255, 0.9);
}

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

.contact-form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.2rem;
  box-shadow: var(--shadow);
  display: grid;
  gap: 0.9rem;
}

.form-row {
  display: grid;
  gap: 0.35rem;
}

label {
  font-weight: 600;
  font-size: 0.94rem;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 0.6rem;
  background: color-mix(in srgb, var(--surface) 80%, var(--surface-alt));
  color: var(--text);
  padding: 0.75rem;
  font: inherit;
}

input:focus,
textarea:focus {
  outline: 2px solid color-mix(in srgb, var(--accent) 55%, white);
  border-color: var(--accent);
}

.form-note {
  margin: 0;
  min-height: 1.1rem;
  font-size: 0.9rem;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.4rem 0;
  margin-top: 3rem;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.social-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  gap: 0.9rem;
}

.social-links a {
  color: var(--primary);
  font-weight: 700;
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 980px) {
  .hero-layout,
  .two-col,
  .cards-grid {
    grid-template-columns: 1fr;
  }

  .hero-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .nav-menu {
    position: fixed;
    top: 74px;
    right: 0;
    width: min(260px, 80vw);
    background: var(--surface);
    border-left: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    padding: 1.1rem;
    flex-direction: column;
    align-items: flex-start;
    transform: translateX(100%);
    transition: transform 0.3s ease;
  }

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

  .menu-toggle {
    display: inline-flex;
  }
}

@media (max-width: 720px) {
  .navbar {
    min-height: 68px;
  }

  .nav-actions {
    margin-left: auto;
  }

  .btn {
    width: auto;
  }

  .hero-stats {
    grid-template-columns: 1fr;
  }

  .cta-box {
    flex-direction: column;
    align-items: flex-start;
  }

  .section {
    padding: 4rem 0;
  }
}