/* ============ DARK THEME & BASE ============ */
:root {
  --bg: #0f1115;
  --bg-elevated: #171a20;
  --surface: #1b1f27;
  --border: #2a2f3a;
  --text: #e6e8ec;
  --text-muted: #9aa3b2;
  --accent: #5b8cff;
  --accent-dark: #3f6fe0;
  --focus: #7aa2ff;
}

*, *::before, *::after { 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: 1.65;
  font-size: 17px;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--focus); text-decoration: underline; }

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

.container { max-width: 720px; margin: 0 auto; padding: 0 24px; }

:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }

.skip-link {
  position: absolute; left: -9999px; top: 0;
  background: var(--accent); color: #fff;
  padding: 8px 16px; z-index: 100; font-weight: 600;
}
.skip-link:focus { left: 0; }

/* ============ HEADER / NAV ============ */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(15, 17, 21, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 920px; margin: 0 auto; padding: 14px 24px;
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 12px;
}
.brand { font-weight: 700; font-size: 1.15rem; }
.main-nav ul { list-style: none; display: flex; gap: 20px; margin: 0; padding: 0; flex-wrap: wrap; }
.main-nav a { color: var(--text); font-weight: 500; }
.main-nav a:hover { color: var(--accent); text-decoration: none; }
.main-nav a[aria-current] { color: var(--accent); }

.lang-switch { display: flex; gap: 4px; }
.lang-switch button {
  background: transparent; color: var(--text-muted);
  border: 1px solid var(--border); padding: 4px 10px;
  border-radius: 6px; cursor: pointer; font-size: 0.85rem; font-weight: 600;
}
.lang-switch button:hover { color: var(--text); border-color: var(--accent); }
.lang-switch button[aria-pressed="true"] { background: var(--accent); color: #fff; border-color: var(--accent); }

/* ============ MAIN ============ */
main { padding: 48px 0 40px; }

.hero h1 { font-size: 2.4rem; line-height: 1.2; margin: 0 0 10px; }
.hero .tagline { font-size: 1.2rem; color: var(--text-muted); margin: 0 0 4px; }
.avatar { width: 92px; height: 92px; border-radius: 50%; object-fit: cover; margin-bottom: 14px; border: 2px solid var(--border); }

.hero-status {
  display: flex; flex-wrap: wrap; gap: 16px;
  margin: 18px 0 0; padding: 0;
  font-size: 0.95rem; color: var(--text-muted);
  list-style: none;
}
.hero-status span { display: inline-flex; align-items: center; gap: 6px; }
.hero-status [data-i18n] { color: var(--text); font-weight: 500; }

.hero-social { display: flex; gap: 16px; margin: 16px 0 0; }
.hero-social a {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--surface); border: 1px solid var(--border);
  color: var(--text); font-size: 1.05rem; text-decoration: none;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.hero-social a:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }

section { margin: 0 0 64px; }
section h2 { font-size: 1.7rem; margin: 0 0 6px; }
.section-lead { color: var(--text-muted); margin: 0 0 16px; }

/* ============ CARDS / GALLERY ============ */
.card-grid { display: grid; gap: 18px; }
@media (min-width: 640px) { .card-grid { grid-template-columns: repeat(3, 1fr); } }
.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 12px; padding: 22px; display: flex; flex-direction: column; gap: 8px;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.card:hover { border-color: var(--accent); transform: translateY(-2px); }
.card h3 { margin: 0; font-size: 1.25rem; }
.card p { margin: 0; color: var(--text-muted); flex-grow: 1; }
.card .card-link { font-weight: 600; }

/* skills */
.skills { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; margin: 8px 0 0; padding: 0; }
.skills li { background: var(--surface); border: 1px solid var(--border); padding: 4px 12px; border-radius: 999px; font-size: 0.9rem; }

/* articles (projects / blog) */
article { border-top: 1px solid var(--border); padding: 22px 0; }
article h3 { margin: 0 0 4px; font-size: 1.3rem; }
article .meta { color: var(--text-muted); font-size: 0.95rem; margin: 0 0 8px; }
article p { margin: 6px 0; }

/* buttons */
.btn {
  display: inline-block; background: var(--accent); color: #fff;
  padding: 10px 18px; border-radius: 8px; font-weight: 600;
}
.btn:hover { background: var(--accent-dark); color: #fff; text-decoration: none; }

/* back link */
.back-link { display: inline-block; margin-top: 8px; font-weight: 600; }

/* ============ FOOTER ============ */
.site-footer { border-top: 1px solid var(--border); padding: 24px 24px 32px; color: var(--text-muted); text-align: center; }
.site-footer ul { list-style: none; display: flex; justify-content: center; gap: 16px; padding: 0; margin: 0 0 10px; flex-wrap: wrap; }
.site-footer a { color: var(--text-muted); }
.site-footer a:hover { color: var(--text); }

@media (max-width: 560px) {
  .hero h1 { font-size: 1.9rem; }
  .nav-inner { flex-direction: column; align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}