:root {
  --bg: #ffffff;
  --fg: #16181d;
  --muted: #6b7280;
  --line: #e5e7eb;
  --card: #fafafa;
  --accent: #2563eb;
  --ok: #15803d;
  --ok-bg: #f0fdf4;
  --err: #b91c1c;
  --err-bg: #fef2f2;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --fg: #e8e8ea;
    --muted: #9099a6;
    --line: #262a33;
    --card: #161920;
    --accent: #7aa2f7;
    --ok: #4ade80;
    --ok-bg: #10231a;
    --err: #f87171;
    --err-bg: #2a1416;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-text-size-adjust: 100%;
}

.container {
  max-width: 48rem;
  margin: 0 auto;
  padding: 0 1.25rem;
}

a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 2px; }
.muted { color: var(--muted); }

/* --- Шапка --- */

.site-header {
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 10;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 0.9rem;
  padding-bottom: 0.9rem;
  flex-wrap: wrap;
}

.site-header__name {
  font-weight: 650;
  color: var(--fg);
  text-decoration: none;
}

.site-nav { display: flex; gap: 1.1rem; flex-wrap: wrap; font-size: 0.925rem; }
.site-nav a { color: var(--muted); text-decoration: none; }
.site-nav a:hover { color: var(--accent); }

/* --- Секции --- */

section { margin: 3.5rem 0; }

h1 { font-size: 2.1rem; line-height: 1.2; margin: 0 0 0.5rem; letter-spacing: -0.02em; }
h2 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--muted);
  font-weight: 650;
  margin: 0 0 1.25rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--line);
}
h3 { font-size: 1.02rem; margin: 0 0 0.25rem; font-weight: 620; }

.hero { margin-top: 3rem; }
.hero__headline { font-size: 1.15rem; color: var(--muted); margin: 0 0 1.25rem; }

.meta {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.1rem;
  padding: 0;
  margin: 0;
  font-size: 0.925rem;
  color: var(--muted);
}

/* --- Записи с периодом слева --- */

.entry { display: flex; gap: 1.5rem; margin-bottom: 1.75rem; }

.entry__period {
  flex: 0 0 9.5rem;
  color: var(--muted);
  font-size: 0.85rem;
  padding-top: 0.15rem;
  font-variant-numeric: tabular-nums;
}

.entry__body { flex: 1; min-width: 0; }
.entry__body p { margin: 0.35rem 0 0; }

@media (max-width: 34rem) {
  .entry { flex-direction: column; gap: 0.25rem; }
  .entry__period { flex: none; }
}

/* --- Навыки --- */

.skill-group { display: flex; gap: 1.5rem; margin-bottom: 1rem; align-items: baseline; }
.skill-group__name { flex: 0 0 9.5rem; color: var(--muted); font-size: 0.85rem; }

.tags { list-style: none; display: flex; flex-wrap: wrap; gap: 0.4rem; padding: 0; margin: 0; }

.tag {
  display: inline-block;
  padding: 0.12rem 0.55rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.8rem;
  color: var(--muted);
  white-space: nowrap;
}

@media (max-width: 34rem) {
  .skill-group { flex-direction: column; gap: 0.4rem; }
  .skill-group__name { flex: none; }
}

/* --- Карточки проектов --- */

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.card {
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: 10px;
  padding: 1.1rem;
}

.card p { margin: 0.4rem 0 0; font-size: 0.925rem; }

.card__foot {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 0.9rem;
  font-size: 0.825rem;
}

/* --- Форма --- */

.contact-form { display: flex; flex-direction: column; gap: 0.9rem; max-width: 34rem; }
.contact-form__row { display: flex; gap: 0.9rem; flex-wrap: wrap; }
.contact-form__row label { flex: 1 1 12rem; }

.contact-form label {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  font-size: 0.875rem;
  color: var(--muted);
}

input[type="text"], input[type="email"], textarea {
  font: inherit;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg);
  color: var(--fg);
  width: 100%;
}

input:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: -1px; }

textarea { resize: vertical; }

button {
  font: inherit;
  font-weight: 550;
  padding: 0.6rem 1.3rem;
  border: 0;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  align-self: flex-start;
}

button:hover { filter: brightness(1.08); }

/* Поле-ловушка для ботов. display:none некоторые боты распознают,
   поэтому убираем поле из виду, оставляя его в потоке документа. */
.hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* --- Сообщения --- */

.flash {
  padding: 0.7rem 1rem;
  border-radius: 8px;
  border-left: 3px solid;
  margin: 1.5rem 0;
  font-size: 0.925rem;
}

.flash--ok { background: var(--ok-bg); border-color: var(--ok); color: var(--ok); }
.flash--error { background: var(--err-bg); border-color: var(--err); color: var(--err); }

/* --- Подвал --- */

.site-footer {
  border-top: 1px solid var(--line);
  margin-top: 4rem;
  padding: 1.75rem 0 3rem;
  font-size: 0.875rem;
}

.site-footer p { margin: 0.25rem 0; }