/* --- Variables --- */
:root {
  --bg: #0d1117;
  --bg-elevated: #161b22;
  --text: #e6edf3;
  --text-muted: #8b949e;
  --accent: #f0b429;
  --accent-hover: #f5c84d;
  --border: #30363d;
  --radius: 8px;
  --font-heading: "Outfit", system-ui, sans-serif;
  --font-body: "Source Sans 3", system-ui, sans-serif;
  --container: min(1120px, 100% - 2rem);
  --transition: 0.2s ease;
}

/* --- Reset & base --- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
img { max-width: 100%; height: auto; display: block; }

/* Skip link: visible on focus for keyboard users */
.skip-link {
  position: absolute;
  top: -3rem;
  left: 1rem;
  z-index: 1000;
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: var(--bg);
  font-weight: 600;
  border-radius: var(--radius);
  transition: top 0.2s ease;
}
.skip-link:focus {
  top: 1rem;
  outline: 2px solid var(--text);
  outline-offset: 2px;
}

/* --- Layout --- */
.container { width: var(--container); margin-inline: auto; padding-inline: 1rem; }

/* --- Header --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(13, 17, 23, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
}

.logo {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text);
}
.logo:hover { color: var(--accent); }

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--text-muted);
  font-weight: 500;
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--text); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}
.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 1px;
}

/* --- Hero --- */
.hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  padding-top: 4rem;
  overflow: hidden;
}

.hero__inner { position: relative; z-index: 1; }

.hero__title {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 700;
  line-height: 1.15;
  margin: 0 0 1rem;
  letter-spacing: -0.02em;
}

.hero__title em {
  font-style: normal;
  color: var(--accent);
}

.hero__lead {
  font-size: 1.25rem;
  color: var(--text-muted);
  max-width: 32ch;
  margin: 0 0 2rem;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.hero__gradient {
  position: absolute;
  top: -40%;
  right: -20%;
  width: 70%;
  height: 80%;
  background: radial-gradient(ellipse, rgba(240, 180, 41, 0.08) 0%, transparent 60%);
  pointer-events: none;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), transform var(--transition);
}

.btn--primary {
  background: var(--accent);
  color: var(--bg);
}
.btn--primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}
.btn:focus-visible,
.nav-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.btn--secondary {
  background: var(--bg-elevated);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn--secondary:hover {
  border-color: var(--text-muted);
  color: var(--text);
}

.btn--full { width: 100%; }

/* --- Sections --- */
.section {
  padding: 5rem 0;
  border-top: 1px solid var(--border);
}

.section__title {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 700;
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
}

.section__lead {
  color: var(--text-muted);
  font-size: 1.125rem;
  margin: 0 0 2.5rem;
}

/* --- Features --- */
.features__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.feature-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: border-color var(--transition), transform var(--transition);
}

.feature-card:hover {
  border-color: var(--text-muted);
  transform: translateY(-2px);
}

.feature-card__icon {
  display: block;
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.feature-card__title {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
}

.feature-card__text {
  color: var(--text-muted);
  margin: 0;
  font-size: 0.9375rem;
}

/* --- About --- */
.about__inner {
  display: grid;
  gap: 2.5rem;
}
@media (min-width: 768px) {
  .about__inner { grid-template-columns: 1fr auto; align-items: start; }
}

.about__text {
  color: var(--text-muted);
  margin: 0 0 1rem;
}
.about__text:last-of-type { margin-bottom: 0; }

.about__stats {
  display: flex;
  gap: 2rem;
  padding: 1.5rem 0;
}

.stat {
  display: flex;
  flex-direction: column;
}

.stat__value {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1.2;
}

.stat__label {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* --- Contact form --- */
.contact__inner { max-width: 28rem; }

.contact-form { margin-top: 1.5rem; position: relative; }

/* Honeypot: hidden from users, bots fill it */
.contact-form__honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
}

.form-row {
  margin-bottom: 1.25rem;
}

.form-row label {
  display: block;
  font-weight: 600;
  font-size: 0.9375rem;
  margin-bottom: 0.375rem;
}

.form-row input,
.form-row textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--text);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color var(--transition);
}

.form-row input::placeholder,
.form-row textarea::placeholder {
  color: var(--text-muted);
}

.form-row input:focus,
.form-row textarea:focus {
  border-color: var(--accent);
}
.form-row input:focus-visible,
.form-row textarea:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.form-row textarea { resize: vertical; min-height: 120px; }

.contact-form .btn { margin-top: 0.5rem; }

.contact-form.is-submitted { display: none; }

.contact-form__success {
  margin-top: 1.5rem;
  padding: 1rem 1.25rem;
  font-weight: 600;
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  border-radius: var(--radius);
}

.contact-form__error {
  margin-top: 1.5rem;
  padding: 1rem 1.25rem;
  font-weight: 600;
  color: #c23;
  background: color-mix(in srgb, #c23 12%, transparent);
  border-radius: var(--radius);
}

.contact-form__cooldown {
  margin-top: 1.5rem;
  padding: 1rem 1.25rem;
  font-weight: 600;
  color: var(--text-muted);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

/* --- Footer --- */
.footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
}

.footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.footer__copy {
  margin: 0;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.footer__links {
  display: flex;
  gap: 1.5rem;
}

.footer__links a {
  font-size: 0.875rem;
  color: var(--text-muted);
}
.footer__links a:hover { color: var(--text); }

/* --- Mobile nav --- */
@media (max-width: 640px) {
  .nav-links {
    position: fixed;
    top: 4rem;
    left: 0;
    right: 0;
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 1.5rem;
    gap: 0.5rem;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.25s ease, opacity 0.25s ease, visibility 0.25s;
  }

  .nav-links.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-toggle { display: flex; }

  .hero__cta { flex-direction: column; }
  .btn--full { width: 100%; }

  .about__stats { flex-direction: column; gap: 1rem; }
}