/* ==========================================================================
   Vida Gergely · Szoftverfejlesztő – minimalista onepage
   ========================================================================== */

:root {
  --bg: #ffffff;
  --bg-soft: #f6f7f9;
  --text: #14161a;
  --text-soft: #5b616e;
  --border: #e6e8ec;
  --accent: #4f46e5;
  --accent-hover: #4338ca;
  --card: #ffffff;
  --shadow: 0 1px 2px rgba(20, 22, 26, 0.04), 0 8px 24px rgba(20, 22, 26, 0.06);
  --radius: 14px;
  --max: 1080px;
  --transition: 0.25s ease;
}

[data-theme="dark"] {
  --bg: #0e0f12;
  --bg-soft: #16181d;
  --text: #eceef2;
  --text-soft: #9aa1ae;
  --border: #23262d;
  --accent: #7c76f0;
  --accent-hover: #918cf5;
  --card: #16181d;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.35);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  transition: background var(--transition), color var(--transition);
}

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

.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 24px; }

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

/* Buttons ----------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform var(--transition), background var(--transition),
    border-color var(--transition), color var(--transition);
}
.btn:active { transform: translateY(1px); }

.btn--primary { background: var(--accent); color: #fff; }
.btn--primary:hover { background: var(--accent-hover); }

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

/* Header / Nav ------------------------------------------------------------ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), background var(--transition);
}
.site-header.scrolled { border-bottom-color: var(--border); }

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.nav__logo { font-weight: 700; font-size: 1.25rem; letter-spacing: -0.02em; }
.nav__logo .dot { color: var(--accent); }

.nav__menu { display: flex; align-items: center; gap: 30px; }
.nav__menu a { font-size: 0.95rem; font-weight: 500; color: var(--text-soft); transition: color var(--transition); }
.nav__menu a:hover { color: var(--text); }

.nav__cta {
  padding: 9px 20px;
  border-radius: 999px;
  background: var(--accent);
  color: #fff !important;
}
.nav__cta:hover { background: var(--accent-hover); }

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition);
}
.theme-toggle:hover { border-color: var(--accent); color: var(--accent); }
.theme-toggle .icon-moon { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-moon { display: block; }

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav__toggle span {
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.nav__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Hero -------------------------------------------------------------------- */
.hero { padding: 96px 24px 88px; text-align: center; }
.hero__eyebrow {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 20px;
}
.hero__title {
  font-size: clamp(2.4rem, 6vw, 4rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
  font-weight: 700;
  margin-bottom: 24px;
}
.hero__lead {
  max-width: 620px;
  margin: 0 auto 36px;
  font-size: 1.12rem;
  color: var(--text-soft);
}
.hero__actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* Sections ---------------------------------------------------------------- */
.section { padding: 72px 24px; }
.section__head { margin-bottom: 44px; max-width: 640px; }
.section__num {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}
.section__title {
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  letter-spacing: -0.02em;
  font-weight: 700;
  line-height: 1.15;
}
.section__sub { color: var(--text-soft); margin-top: 10px; font-size: 1.05rem; }

/* Grid -------------------------------------------------------------------- */
.grid { display: grid; gap: 20px; }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }

/* Cards ------------------------------------------------------------------- */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: transparent; }
.card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  color: var(--accent);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 18px;
}
.card h3 { font-size: 1.2rem; margin-bottom: 10px; letter-spacing: -0.01em; }
.card p { color: var(--text-soft); font-size: 0.98rem; }

/* About ------------------------------------------------------------------- */
.about { display: grid; grid-template-columns: 1.4fr 1fr; gap: 56px; align-items: start; }
.about__text p { color: var(--text-soft); margin-bottom: 18px; font-size: 1.05rem; }
.about__text p:last-child { margin-bottom: 0; }
.about__skills h3 { font-size: 1.1rem; margin-bottom: 18px; }

.tags { display: flex; flex-wrap: wrap; gap: 10px; }
.tags li {
  padding: 7px 15px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-soft);
  transition: border-color var(--transition), color var(--transition);
}
.tags li:hover { border-color: var(--accent); color: var(--accent); }

/* Projects ---------------------------------------------------------------- */
.project {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 28px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.project:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: transparent; }
.project__meta { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.project__type {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
}
.project__year { font-size: 0.85rem; color: var(--text-soft); }
.project h3 { font-size: 1.25rem; margin-bottom: 10px; letter-spacing: -0.01em; }
.project p { color: var(--text-soft); font-size: 0.98rem; margin-bottom: 18px; }
.project__tech { display: flex; flex-wrap: wrap; gap: 8px; }
.project__tech span {
  font-size: 0.8rem;
  padding: 4px 11px;
  border-radius: 6px;
  background: var(--bg-soft);
  color: var(--text-soft);
}

/* Contact ----------------------------------------------------------------- */
.contact { max-width: 620px; margin: 0 auto; text-align: center; }
.contact .section__head { margin: 0 auto 40px; }
.contact__form { display: grid; gap: 18px; text-align: left; }
.field { display: grid; gap: 7px; }
.field label { font-size: 0.9rem; font-weight: 500; }
.field input, .field textarea {
  width: 100%;
  padding: 13px 15px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg);
  color: var(--text);
  font: inherit;
  font-size: 0.98rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.field input:focus, .field textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent);
}
.field textarea { resize: vertical; }
.contact__form .btn { justify-self: start; margin-top: 4px; }
.form__status { font-size: 0.92rem; font-weight: 500; min-height: 1.2em; }
.form__status.ok { color: #16a34a; }
.form__status.err { color: #dc2626; }

.contact__direct { margin-top: 34px; }
.contact__direct a {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--accent);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition);
}
.contact__direct a:hover { border-bottom-color: var(--accent); }

/* Footer ------------------------------------------------------------------ */
.footer { border-top: 1px solid var(--border); padding: 28px 0; margin-top: 40px; }
.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  font-size: 0.9rem;
  color: var(--text-soft);
}
.footer__top { font-weight: 500; transition: color var(--transition); }
.footer__top:hover { color: var(--accent); }

/* Scroll reveal ----------------------------------------------------------- */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.visible { opacity: 1; transform: none; }

/* Responsive -------------------------------------------------------------- */
@media (max-width: 860px) {
  .grid--3 { grid-template-columns: 1fr 1fr; }
  .about { grid-template-columns: 1fr; gap: 36px; }
}

@media (max-width: 680px) {
  .nav__toggle { display: flex; }
  .nav__menu {
    position: fixed;
    inset: 68px 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 12px 24px 24px;
    transform: translateY(-120%);
    transition: transform 0.3s ease;
  }
  .nav__menu.open { transform: none; }
  .nav__menu li { padding: 6px 0; }
  .nav__menu a { display: block; padding: 8px 0; font-size: 1.05rem; }
  .nav__cta { text-align: center; margin-top: 8px; }
  .theme-toggle { margin-top: 8px; }

  .grid--3, .grid--2 { grid-template-columns: 1fr; }
  .hero { padding: 64px 24px 56px; }
  .section { padding: 56px 24px; }
  .footer__inner { flex-direction: column; text-align: center; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}