@import url('https://fonts.googleapis.com/css2?family=Comfortaa:wght@400;500;600;700&display=swap');

:root[data-theme="light"] {
  --bg: #f7f8fc;
  --bg-card: #ffffff;
  --text: #1c1c28;
  --text-soft: #666a80;
  --primary: #6c5ce7;
  --primary-soft: #eae7fd;
  --accent: #00b894;
  --border: #e4e6f0;
  --danger: #ff6b6b;
  --shadow: 0 4px 20px rgba(30,30,60,0.06);
}
:root[data-theme="dark"] {
  --bg: #10101a;
  --bg-card: #191927;
  --text: #f1f1f6;
  --text-soft: #a0a0b8;
  --primary: #a29bfe;
  --primary-soft: #2a2740;
  --accent: #55efc4;
  --border: #2b2b40;
  --danger: #ff8787;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
}
:root[data-theme="pastel"] {
  --bg: #fdf6f0;
  --bg-card: #fffaf5;
  --text: #4a3f45;
  --text-soft: #8a7a82;
  --primary: #f2a6c4;
  --primary-soft: #fbe3ee;
  --accent: #a8dfd0;
  --border: #f2e0e8;
  --danger: #e88ba0;
  --shadow: 0 4px 20px rgba(210,170,190,0.15);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: 'Comfortaa', sans-serif;
  background: var(--bg);
  color: var(--text);
  transition: background .3s, color .3s;
  line-height: 1.7;
  letter-spacing: .1px;
}
a { color: inherit; text-decoration: none; }

.container { max-width: 1000px; margin: 0 auto; padding: 0 20px; }

/* ---- Header ---- */
header.site-header {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 100;
  box-shadow: var(--shadow);
}
.header-inner {
  max-width: 1000px; margin: 0 auto; padding: 14px 20px;
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand img {
  width: 44px; height: 44px; border-radius: 50%; object-fit: cover;
  border: 2px solid var(--primary);
}
.brand .name { font-weight: 800; font-size: 1.15rem; }
.brand .level {
  font-size: .7rem; background: var(--primary-soft); color: var(--primary);
  padding: 2px 8px; border-radius: 10px; margin-left: 6px; font-weight: 700;
}
nav.main-nav { display: flex; gap: 6px; flex-wrap: wrap; }
nav.main-nav a {
  padding: 8px 14px; border-radius: 10px; font-weight: 600; font-size: .92rem;
  color: var(--text-soft); transition: .2s;
}
nav.main-nav a:hover, nav.main-nav a.active {
  background: var(--primary-soft); color: var(--primary);
}
.controls { display: flex; gap: 8px; align-items: center; }
.controls button {
  border: 1px solid var(--border); background: var(--bg-card); color: var(--text);
  border-radius: 8px; padding: 7px 10px; cursor: pointer; font-weight: 700; font-size: .85rem;
  transition: .2s;
}
.controls button:hover { border-color: var(--primary); color: var(--primary); }

/* ---- Cards / general ---- */
.card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 16px;
  padding: 22px; box-shadow: var(--shadow); margin-bottom: 20px;
}
.hero {
  text-align: center; padding: 60px 20px 40px;
}
.hero img.avatar {
  width: 120px; height: 120px; border-radius: 50%; object-fit: cover;
  border: 4px solid var(--primary); box-shadow: var(--shadow);
}
.hero h1 { font-size: 2rem; margin: 16px 0 4px; }
.hero p.subtitle { color: var(--text-soft); font-size: 1.05rem; }
.badge-level {
  display: inline-block; margin-top: 10px; background: var(--primary);
  color: #fff; font-weight: 800; padding: 6px 16px; border-radius: 20px; font-size: .9rem;
}

h1, h2, h3 { font-weight: 800; }
section { padding: 24px 0; }

/* ---- Buttons ---- */
.btn {
  display: inline-block; background: var(--primary); color: #fff !important;
  padding: 10px 18px; border-radius: 10px; font-weight: 700; border: none; cursor: pointer;
  transition: .2s; font-size: .95rem;
}
.btn:hover { opacity: .88; transform: translateY(-1px); }
.btn.outline { background: transparent; color: var(--primary) !important; border: 2px solid var(--primary); }
.btn.small { padding: 6px 12px; font-size: .8rem; border-radius: 8px; }

/* ---- Contacts / footer ---- */
footer.site-footer {
  border-top: 1px solid var(--border); margin-top: 40px; padding: 30px 0; background: var(--bg-card);
}
.contacts-grid {
  display: flex; flex-wrap: wrap; gap: 14px; justify-content: center;
}
.contact-chip {
  display: flex; align-items: center; gap: 8px; background: var(--primary-soft);
  color: var(--primary); padding: 8px 16px; border-radius: 20px; font-weight: 700; font-size: .88rem;
}

/* ---- Tabs ---- */
.tabs { display: flex; gap: 8px; margin-bottom: 20px; border-bottom: 2px solid var(--border); }
.tab-btn {
  padding: 10px 20px; font-weight: 700; cursor: pointer; color: var(--text-soft);
  border-bottom: 3px solid transparent; margin-bottom: -2px; background: none; border-top:none; border-left:none; border-right:none;
  font-size: 1rem; font-family: inherit;
}
.tab-btn.active { color: var(--primary); border-bottom-color: var(--primary); }
.tab-content { display: none; }
.tab-content.active { display: block; }

/* ---- Search / filters ---- */
.search-bar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 18px; }
.search-bar input, .search-bar select {
  flex: 1; min-width: 160px; padding: 10px 14px; border-radius: 10px;
  border: 1px solid var(--border); background: var(--bg); color: var(--text); font-size: .95rem;
}
.quick-filters { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 18px; }
.quick-filters button {
  padding: 6px 14px; border-radius: 20px; border: 1px solid var(--border);
  background: var(--bg-card); color: var(--text-soft); cursor: pointer; font-weight: 700; font-size: .82rem;
}
.quick-filters button.active { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ---- Word / grammar list ---- */
.word-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; }
.word-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 14px; padding: 16px;
  transition: .2s;
}
.word-card:hover { border-color: var(--primary); transform: translateY(-2px); }
.word-card .kr { font-size: 1.25rem; font-weight: 800; }
.word-card .en { color: var(--primary); font-weight: 700; margin-top: 2px; }
.word-card .ru { color: var(--text-soft); font-size: .9rem; margin-top: 2px; }
.word-card .tag {
  display: inline-block; margin-top: 8px; background: var(--primary-soft); color: var(--primary);
  font-size: .72rem; padding: 3px 9px; border-radius: 10px; font-weight: 700;
}
.multi-badge {
  display: inline-block; margin-left: 6px; background: var(--accent); color: #063;
  font-size: .68rem; padding: 2px 8px; border-radius: 10px; font-weight: 800;
}
:root[data-theme="dark"] .multi-badge { color: #04261d; }

.grammar-card h3 { margin: 0 0 6px; color: var(--primary); display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.grammar-card .expl { font-size: .92rem; margin: 8px 0; }
.grammar-card .ex { font-size: .88rem; color: var(--text-soft); font-style: italic; }
.grammar-card .g-tag {
  display: inline-block; background: var(--primary-soft); color: var(--primary);
  font-size: .68rem; padding: 3px 9px; border-radius: 10px; font-weight: 700; vertical-align: middle;
}
.grammar-card .g-level {
  display: inline-block; background: var(--accent); color: #063;
  font-size: .68rem; padding: 3px 9px; border-radius: 10px; font-weight: 800; vertical-align: middle;
}
:root[data-theme="dark"] .grammar-card .g-level { color: #04261d; }

/* ---- Grammar tag cloud (distribution + filter) ---- */
.tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; margin: 14px 0; }
.tag-cloud button {
  border: 1px solid var(--border); border-radius: 20px; padding: 6px 12px; font-size: .8rem;
  background: var(--bg-card); color: var(--text-soft); cursor: pointer; font-weight: 700;
  display: flex; align-items: center; gap: 6px; transition: .15s;
}
.tag-cloud button:hover { border-color: var(--primary); color: var(--primary); }
.tag-cloud button.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.tag-cloud button .cnt {
  background: rgba(0,0,0,.12); border-radius: 8px; padding: 0 6px; font-size: .72rem;
}
.tag-cloud button.active .cnt { background: rgba(255,255,255,.25); }

/* ---- Stats ---- */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px,1fr)); gap: 14px; margin-bottom: 24px; }
.stat-box { text-align: center; padding: 20px; }
.stat-box .num { font-size: 2rem; font-weight: 800; color: var(--primary); }
.stat-box .label { color: var(--text-soft); font-size: .85rem; margin-top: 4px; }
.bar-row { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
.bar-label { width: 130px; font-size: .85rem; flex-shrink: 0; }
.bar-track { flex: 1; background: var(--primary-soft); border-radius: 6px; height: 16px; overflow: hidden; }
.bar-fill { height: 100%; background: var(--primary); border-radius: 6px; }
.bar-count { width: 40px; text-align: right; font-weight: 700; font-size: .82rem; }

/* ---- Quiz ---- */
.flashcard {
  max-width: 420px; margin: 0 auto; text-align: center; padding: 40px 20px 10px;
  min-height: 140px; display: flex; flex-direction: column; justify-content: center; align-items: center;
}
.flashcard .kr-big { font-size: 2.4rem; font-weight: 800; }
.flashcard .answer { margin-top: 14px; color: var(--primary); font-size: 1.3rem; font-weight: 700; display: none; }
.flashcard .answer.show { display: block; }
.flashcard .hint { margin-top: 20px; font-size: .8rem; color: var(--text-soft); }
.quiz-controls { display: flex; justify-content: center; gap: 12px; margin-top: 20px; }
.quiz-score { display: flex; justify-content: center; gap: 18px; flex-wrap: wrap; margin-top: 18px; color: var(--text-soft); font-weight: 700; font-size: .9rem; }

.quiz-progress-text { text-align: center; font-weight: 700; color: var(--text-soft); font-size: .85rem; margin-bottom: 6px; }
.quiz-progress-bar { max-width: 420px; margin: 0 auto 10px; height: 6px; background: var(--primary-soft); border-radius: 6px; overflow: hidden; }
.quiz-progress-fill { height: 100%; background: var(--primary); transition: width .3s; }

.quiz-options { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; max-width: 420px; margin: 10px auto 0; }
.quiz-opt {
  padding: 16px 10px; border-radius: 12px; border: 2px solid var(--border); background: var(--bg-card);
  color: var(--text); font-family: inherit; font-weight: 700; font-size: .95rem; cursor: pointer; transition: .15s;
}
.quiz-opt:hover:not(.disabled) { border-color: var(--primary); transform: translateY(-2px); }
.quiz-opt.disabled { cursor: default; }
.quiz-opt.correct { background: var(--accent); border-color: var(--accent); color: #063; }
.quiz-opt.wrong { background: var(--danger); border-color: var(--danger); color: #fff; }
:root[data-theme="dark"] .quiz-opt.correct { color: #04261d; }

.flashcard.result { gap: 8px; }
.result-emoji { font-size: 2.6rem; }
.quiz-final-score { font-size: 1.7rem; font-weight: 800; color: var(--primary); }
.quiz-final-actions { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; margin-top: 6px; }

/* ---- Swipe quiz mode ---- */
.swipe-card-wrap {
  max-width: 320px; margin: 20px auto 0; height: 220px;
  display: flex; align-items: center; justify-content: center; position: relative;
}
.swipe-card {
  width: 100%; height: 100%; border-radius: 20px; background: var(--bg-card);
  border: 2px solid var(--border); box-shadow: var(--shadow);
  display: flex; align-items: center; justify-content: center; text-align: center;
  padding: 20px; cursor: grab; user-select: none; touch-action: pan-y;
  position: relative; font-size: 1.8rem; font-weight: 800;
  transition: transform .15s ease, border-color .2s;
}
.swipe-card.dragging { cursor: grabbing; transition: none; }
.swipe-card.flipped { border-color: var(--primary); color: var(--primary); }
.swipe-card-face { pointer-events: none; word-break: break-word; }
.swipe-label {
  position: absolute; top: 14px; padding: 4px 12px; border-radius: 10px;
  font-weight: 800; font-size: .85rem; opacity: 0; pointer-events: none;
  border: 2px solid currentColor;
}
.swipe-label.know { right: 14px; color: var(--accent); transform: rotate(8deg); }
.swipe-label.dontknow { left: 14px; color: var(--danger); transform: rotate(-8deg); }
.swipe-hint { text-align: center; color: var(--text-soft); font-size: .8rem; margin: 10px 0 0; }
.swipe-buttons { display: flex; justify-content: center; gap: 14px; margin-top: 18px; }
.swipe-btn {
  border: 2px solid var(--border); background: var(--bg-card); color: var(--text);
  border-radius: 14px; padding: 12px 18px; font-family: inherit; font-weight: 700;
  font-size: .95rem; cursor: pointer; transition: .15s;
}
.swipe-btn:hover { transform: translateY(-2px); }
.swipe-btn.know { border-color: var(--accent); color: var(--accent); }
.swipe-btn.dontknow { border-color: var(--danger); color: var(--danger); }
.swipe-btn.flip { font-size: 1.2rem; padding: 12px 16px; }

/* ---- Study Map ---- */
#worldmap { width: 100%; height: auto; display: block; margin-top: 4px; }
.map-land { fill: var(--border); }
.map-land.filled { fill: var(--primary); }
.map-meta { color: var(--text-soft); font-size: .82rem; margin: -6px 0 10px; }

.cal-wrap { overflow-x: auto; }
.cal-months { display: grid; grid-auto-flow: column; font-size: .68rem; color: var(--text-soft); margin-bottom: 4px; height: 14px; }
.cal-grid { display: grid; grid-template-rows: repeat(7, 12px); grid-auto-flow: column; grid-auto-columns: 12px; gap: 3px; }
.cal-day { width: 10px; height: 10px; border-radius: 3px; background: var(--primary-soft); }
.cal-day.done { background: var(--accent); }
.cal-day.pad { visibility: hidden; }

/* ---- Projects ---- */
.project-card { display: flex; gap: 16px; align-items: center; flex-wrap: wrap; }
.project-card img { width: 64px; height: 64px; border-radius: 14px; object-fit: cover; }
.project-card .info { flex: 1; min-width: 200px; }

[data-i18n], [data-i18n-ru] {}

/* ---- About Me ---- */
.about-grid { display: grid; grid-template-columns: 1fr 2fr; gap: 24px; align-items: start; }
@media (max-width: 720px) { .about-grid { grid-template-columns: 1fr; } }
.about-avatar-wrap { text-align: center; }
.about-avatar-wrap img {
  width: 160px; height: 160px; border-radius: 24px; object-fit: cover;
  border: 3px solid var(--primary); box-shadow: var(--shadow);
}
.about-langs { margin-top: 16px; display: flex; flex-direction: column; gap: 8px; }
.lang-row { display: flex; justify-content: space-between; align-items: center; background: var(--primary-soft); padding: 8px 14px; border-radius: 10px; font-weight: 700; font-size: .85rem; }
.lang-row .level-tag { background: var(--primary); color: #fff; padding: 2px 10px; border-radius: 10px; font-size: .72rem; }

.tech-table { width: 100%; border-collapse: collapse; margin-top: 10px; }
.tech-table td, .tech-table th { padding: 8px 12px; border-bottom: 1px solid var(--border); font-size: .88rem; text-align: left; }
.tech-table th { color: var(--text-soft); font-size: .78rem; text-transform: uppercase; letter-spacing: .5px; }
.tech-pill { display: inline-block; background: var(--primary-soft); color: var(--primary); padding: 3px 10px; border-radius: 10px; font-size: .78rem; font-weight: 700; margin: 2px 4px 2px 0; }
.status-pill { display: inline-block; background: var(--danger); color: #fff; padding: 3px 10px; border-radius: 10px; font-size: .72rem; font-weight: 700; margin: 2px 4px 2px 0; vertical-align: middle; }
.notice { border-left: 4px solid var(--danger); background: var(--primary-soft); border-radius: 10px; padding: 12px 16px; font-size: .9rem; color: var(--text); margin: 14px 0; }

/* ---- Project detail page ---- */
.project-hero { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }
.project-hero img { width: 88px; height: 88px; border-radius: 20px; object-fit: cover; box-shadow: var(--shadow); }
.project-hero h1 { margin: 0 0 4px; }
.project-hero .tagline { color: var(--text-soft); font-size: 1rem; }
.feature-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px,1fr)); gap: 14px; margin-top: 10px; }
.feature-item { background: var(--bg); border: 1px solid var(--border); border-radius: 12px; padding: 14px; }
.feature-item .emoji { font-size: 1.4rem; }
.feature-item h4 { margin: 6px 0 4px; font-size: .95rem; }
.feature-item p { margin: 0; font-size: .85rem; color: var(--text-soft); }
.step-list { counter-reset: step; list-style: none; padding: 0; }
.step-list li { counter-increment: step; margin-bottom: 10px; padding-left: 40px; position: relative; font-size: .92rem; }
.step-list li::before {
  content: counter(step); position: absolute; left: 0; top: -2px; background: var(--primary); color: #fff;
  width: 26px; height: 26px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: .82rem;
}
.code-block { background: var(--bg); border: 1px solid var(--border); border-radius: 10px; padding: 12px 16px; font-family: monospace; font-size: .85rem; overflow-x: auto; }
.stack-row { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 8px; }
.repo-meta { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 10px; font-size: .82rem; color: var(--text-soft); }
.repo-meta span { display: flex; align-items: center; gap: 4px; }