:root {
  --bg: #0b0f14;
  --bg-alt: #10161d;
  --surface: #141b23;
  --border: #232e3a;
  --text: #e7edf3;
  --text-dim: #9aabb9;
  --accent: #3ddc97;
  --accent-dim: #2a9d73;
  --radius: 12px;
  --max-w: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a {
  color: inherit;
}

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

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

/* Header */
header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(11, 15, 20, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  position: relative;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.15rem;
  text-decoration: none;
  letter-spacing: -0.02em;
}

.brand img {
  border-radius: 50%;
}

.brand span {
  color: var(--accent);
}

.nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-dim);
  font-weight: 500;
  transition: color 0.15s ease;
}

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

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  background: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  padding: 8px;
  cursor: pointer;
}

.nav-toggle svg {
  width: 20px;
  height: 20px;
}

/* Hero */
.hero {
  padding: 96px 0 72px;
  text-align: center;
  background: radial-gradient(circle at 50% -10%, rgba(61, 220, 151, 0.12), transparent 60%);
}

.hero h1 {
  font-size: clamp(2.1rem, 5vw, 3.4rem);
  margin: 0 0 18px;
  letter-spacing: -0.03em;
}

.hero p {
  color: var(--text-dim);
  font-size: 1.15rem;
  max-width: 620px;
  margin: 0 auto 32px;
}

.btn {
  display: inline-block;
  background: var(--accent);
  color: #06120c;
  font-weight: 600;
  text-decoration: none;
  padding: 13px 28px;
  border-radius: 999px;
  transition: transform 0.15s ease, background 0.15s ease;
}

.btn:hover {
  background: var(--accent-dim);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  margin-left: 12px;
}

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

/* Page header (non-home pages) */
.page-head {
  padding: 64px 0 40px;
  text-align: center;
  border-bottom: 1px solid var(--border);
}

.page-head h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  margin: 0 0 12px;
  letter-spacing: -0.02em;
}

.page-head p {
  color: var(--text-dim);
  max-width: 560px;
  margin: 0 auto;
}

/* Sections */
section {
  padding: 64px 0;
}

.section-head {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 44px;
}

.section-head h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  margin: 0 0 12px;
  letter-spacing: -0.02em;
}

.section-head p {
  color: var(--text-dim);
  margin: 0;
}

/* Cards grid */
.grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

.card {
  display: block;
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  font: inherit;
  text-align: left;
  color: inherit;
  cursor: pointer;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.card:hover {
  border-color: var(--accent-dim);
  transform: translateY(-3px);
}

.card .icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: rgba(61, 220, 151, 0.12);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 16px;
}

.icon svg {
  width: 22px;
  height: 22px;
}

.card h3 {
  margin: 0 0 10px;
  font-size: 1.1rem;
}

.card p {
  color: var(--text-dim);
  margin: 0;
  font-size: 0.95rem;
}

/* About page */
.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: start;
}

.about-grid h2 {
  margin-top: 0;
}

.stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
  margin-top: 24px;
}

.stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.stat strong {
  display: block;
  font-size: 1.7rem;
  color: var(--accent);
}

.stat span {
  color: var(--text-dim);
  font-size: 0.9rem;
}

.values {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.values li {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
}

.values li strong {
  color: var(--accent);
  display: block;
  margin-bottom: 4px;
}

/* Contact page */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

.contact-grid-wide {
  grid-template-columns: 1.3fr 0.7fr;
}

.contact-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px;
}

.contact-card .icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(61, 220, 151, 0.12);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 16px;
}

.contact-card h3 {
  margin: 0 0 8px;
}

.contact-card p,
.contact-card a {
  color: var(--text-dim);
  text-decoration: none;
  margin: 0;
}

.contact-card a:hover {
  color: var(--accent);
}

.map-embed {
  margin-top: 18px;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--border);
  aspect-ratio: 4 / 3;
}

.map-embed iframe {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
  filter: invert(92%) hue-rotate(180deg) brightness(0.95) contrast(0.9);
}

.contact-form {
  display: grid;
  gap: 16px;
  margin-top: 4px;
}

.contact-form label {
  display: grid;
  gap: 6px;
  color: var(--text-dim);
  font-size: 0.9rem;
  font-weight: 500;
}

.contact-form input,
.contact-form textarea {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 11px 14px;
  color: var(--text);
  font: inherit;
  resize: vertical;
}

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

.contact-form .btn {
  justify-self: start;
  border: none;
  cursor: pointer;
}

.form-status {
  min-height: 1.3em;
  margin: 0;
  font-size: 0.9rem;
}

.form-status.success {
  color: var(--accent);
}

.form-status.error {
  color: #ef6767;
}

/* Footer */
footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.9rem;
}

footer a {
  text-decoration: none;
  color: var(--text-dim);
}

footer a:hover {
  color: var(--accent);
}

.modal {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0;
  max-width: 480px;
  width: calc(100% - 48px);
}

.modal::backdrop {
  background: rgba(5, 8, 11, 0.7);
  backdrop-filter: blur(2px);
}

.modal-content {
  position: relative;
  padding: 32px;
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: none;
  color: var(--text-dim);
  font-size: 1.2rem;
  line-height: 1;
  cursor: pointer;
}

.modal-close:hover {
  color: var(--text);
  border-color: var(--accent);
}

#modal-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: rgba(61, 220, 151, 0.12);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

#modal-icon svg {
  width: 24px;
  height: 24px;
}

#modal-title {
  margin: 0 32px 14px 0;
  font-size: 1.3rem;
}

#modal-desc {
  margin: 0;
  color: var(--text-dim);
}

.modal-points {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.modal-points li {
  padding-left: 20px;
  position: relative;
  font-size: 0.92rem;
  color: var(--text-dim);
}

.modal-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

.modal-cta {
  display: inline-block;
  margin-top: 22px;
  border: none;
  cursor: pointer;
}

@media (max-width: 860px) {
  .grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .about-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-alt);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 16px 24px;
    gap: 16px;
    display: none;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-toggle {
    display: flex;
  }

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

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

  .btn-outline {
    margin-left: 0;
    margin-top: 12px;
  }
}