/* ==========================================================================
   Flash Archive — тёмная тема, «печатная плата» + стекло (glassmorphism)
   ========================================================================== */

:root{
  --bg-0:#06070c;
  --bg-1:#0c1018;
  --panel: rgba(255,255,255,0.045);
  --panel-strong: rgba(255,255,255,0.07);
  --panel-border: rgba(255,255,255,0.09);
  --accent:#45e0c4;
  --accent-dim: rgba(69,224,196,0.18);
  --accent-2:#f2b134;
  --danger:#ff6b6b;
  --text-hi:#eef2f6;
  --text-lo:#93a0b4;
  --radius-lg: 18px;
  --radius-md: 12px;
  --font-head: 'Space Grotesk', 'Inter', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

*{ box-sizing: border-box; }

html,body{
  margin:0; padding:0; min-height:100%;
  background: var(--bg-0);
  color: var(--text-hi);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
}

/* Фоновая "печатная плата": едва заметная сетка + два мягких пятна свечения */
.bg-grid{
  position: fixed; inset:0; z-index:-1;
  background-color: var(--bg-0);
  background-image:
    radial-gradient(circle at 12% 8%, rgba(69,224,196,0.10), transparent 40%),
    radial-gradient(circle at 88% 82%, rgba(242,177,52,0.07), transparent 42%),
    linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: auto, auto, 42px 42px, 42px 42px;
}

a{ color: inherit; text-decoration:none; }
code{ font-family: var(--font-mono); }
.accent{ color: var(--accent); }
.muted{ color: var(--text-lo); }

/* Стекло/блюр — общий класс */
.glass{
  background: var(--panel);
  border: 1px solid var(--panel-border);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border-radius: var(--radius-lg);
}

/* ---------- Шапка ---------- */
.site-header{
  position: sticky; top: 12px; z-index: 20;
  margin: 12px auto 0; max-width: 1180px;
  padding: 0 8px;
}
.header-row{
  display:flex; align-items:center; justify-content:space-between;
  padding: 12px 18px;
}
.logo{
  font-family: var(--font-head); font-weight:700; font-size: 1.15rem;
  letter-spacing: 0.02em;
}
.logo-bracket{ color: var(--text-lo); }

.site-nav{ display:flex; align-items:center; gap: 22px; }
.site-nav a{ font-size: 0.95rem; color: var(--text-lo); transition: color .15s; }
.site-nav a:hover{ color: var(--text-hi); }
.nav-cta{
  color: var(--bg-0) !important;
  background: var(--accent);
  padding: 8px 16px; border-radius: 999px; font-weight:600;
}
.nav-cta:hover{ opacity:.88; }
.nav-muted{ font-size:0.85rem; }

.menu-toggle{
  display:none; flex-direction:column; gap:5px;
  background:none; border:none; cursor:pointer; padding: 6px;
}
.menu-toggle span{ width:22px; height:2px; background: var(--text-hi); display:block; border-radius:2px; }

/* ---------- Общая раскладка страницы ---------- */
.page{ max-width: 1180px; margin: 0 auto; padding: 40px 20px 80px; }

.hero{ padding: 24px 4px 34px; }
.hero h1{
  font-family: var(--font-head); font-weight:700;
  font-size: clamp(1.7rem, 4vw, 2.6rem);
  line-height:1.15; margin: 0 0 14px;
}
.hero-sub{ color: var(--text-lo); max-width: 640px; line-height:1.6; margin:0 0 26px; }

.search-bar{
  display:flex; gap:10px; padding: 10px; flex-wrap: wrap;
}
.search-bar input[type="text"]{
  flex: 1 1 260px;
}
.search-bar select{ flex: 0 0 auto; }
.limit-note{ margin: 10px 2px 0; font-size: 0.85rem; color: var(--text-lo); }
.limit-note a{ text-decoration: underline; }

input[type="text"], input[type="password"], select, .upload-form input{
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--panel-border);
  color: var(--text-hi);
  padding: 12px 14px;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 0.95rem;
  outline: none;
}
input[type="text"]:focus, input[type="password"]:focus, select:focus{
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding: 12px 20px; border-radius: var(--radius-md);
  font-weight:600; font-size:0.92rem; border:none; cursor:pointer;
  transition: transform .12s ease, opacity .15s ease;
}
.btn:active{ transform: scale(0.97); }
.btn-primary{ background: var(--accent); color: var(--bg-0); }
.btn-primary:hover{ opacity:.9; }
.btn-download{ background: var(--panel-strong); border:1px solid var(--panel-border); color: var(--text-hi); width:100%; }
.btn-download:hover{ border-color: var(--accent); color: var(--accent); }
.btn-locked{ background: transparent; border:1px dashed var(--panel-border); color: var(--text-lo); width:100%; }
.btn-locked:hover{ border-color: var(--accent-2); color: var(--accent-2); }

/* ---------- Результаты / карточки файлов ---------- */
.results-head{ display:flex; align-items:baseline; justify-content:space-between; margin: 6px 0 18px; }
.results-head h2{ font-family: var(--font-head); font-size:1.2rem; margin:0; }

.file-grid{
  display:grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 16px;
}

.file-card{
  padding: 18px; display:flex; flex-direction:column; gap:10px;
  transition: transform .15s ease, border-color .15s ease;
}
.file-card:hover{ transform: translateY(-3px); border-color: var(--panel-strong); }

.file-card-top{ display:flex; align-items:center; justify-content:space-between; }
.badge{ font-size:0.72rem; font-weight:700; padding:4px 9px; border-radius:999px; letter-spacing:.03em; }
.badge-fit{ background: rgba(69,224,196,0.16); color: var(--accent); }
.badge-me{ background: rgba(242,177,52,0.16); color: var(--accent-2); }
.file-ext{ font-family: var(--font-mono); font-size:0.78rem; color: var(--text-lo); }

.file-name{
  margin:0; font-size:0.98rem; font-weight:600; line-height:1.35;
  word-break: break-word; font-family: var(--font-mono);
}

.tag-row{ display:flex; flex-wrap:wrap; gap:6px; }
.tag{
  font-family: var(--font-mono); font-size:0.72rem; padding:2px 7px;
  border:1px solid var(--panel-border); border-radius:6px; color: var(--text-lo);
  cursor: help;
}

.file-meta{ display:flex; justify-content:space-between; color: var(--text-lo); font-size:0.82rem; }

.empty-state{ padding: 30px; text-align:center; color: var(--text-lo); }

/* ---------- Справка ---------- */
.help-panel{ margin-top: 60px; padding: 30px; }
.help-panel h2{ font-family: var(--font-head); font-size:1.4rem; margin: 0 0 20px; }
.help-grid{ display:grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-bottom: 26px; }
.help-col h3{ font-size:1.02rem; margin:0 0 8px; color: var(--accent); }
.help-col p{ line-height:1.6; color: var(--text-lo); margin:0; }

.glossary-title{ margin: 26px 0 6px; font-size:1.05rem; }
.glossary-table-wrap{ overflow-x:auto; margin-top:12px; }
.glossary-table{ width:100%; border-collapse: collapse; font-size:0.88rem; }
.glossary-table th, .glossary-table td{ text-align:left; padding: 10px 12px; border-bottom:1px solid var(--panel-border); }
.glossary-table th{ color: var(--text-lo); font-weight:600; }
.glossary-table td:first-child{ font-family: var(--font-mono); color: var(--accent); white-space: nowrap; }

.alert{ margin-top: 20px; padding: 14px 16px; border-radius: var(--radius-md); font-size:0.9rem; line-height:1.5; }
.alert-warning{ background: rgba(242,177,52,0.10); border:1px solid rgba(242,177,52,0.3); color:#f2c568; }
.alert-error{ background: rgba(255,107,107,0.1); border:1px solid rgba(255,107,107,0.3); color:#ff9d9d; }
.alert-success{ background: rgba(69,224,196,0.1); border:1px solid rgba(69,224,196,0.3); color: var(--accent); }

/* ---------- Формы: логин / загрузка ---------- */
.auth-page{ display:flex; align-items:center; justify-content:center; min-height:100vh; padding: 20px; }
.auth-card{ width:100%; max-width: 400px; padding: 34px; text-align:center; }
.auth-sub{ color: var(--text-lo); font-size:0.9rem; margin: 10px 0 24px; line-height:1.5; }
.auth-form{ display:flex; flex-direction:column; gap:14px; text-align:left; }
.auth-form label{ display:flex; flex-direction:column; gap:6px; font-size:0.85rem; color: var(--text-lo); }
.back-link{ display:inline-block; margin-top:20px; font-size:0.85rem; color: var(--text-lo); }
.back-link:hover{ color: var(--accent); }

.upload-panel{ padding: 30px; max-width: 560px; margin: 0 auto; }
.upload-form{ display:flex; flex-direction:column; gap:16px; margin-top:20px; }
.upload-form label{ display:flex; flex-direction:column; gap:6px; font-size:0.85rem; color: var(--text-lo); }
.hint{ font-size:0.8rem; color: var(--text-lo); margin: -4px 0 4px; }

.site-footer{ text-align:center; color: var(--text-lo); font-size:0.8rem; padding: 30px 20px 50px; }

/* ==========================================================================
   Мобильная адаптация
   ========================================================================== */
@media (max-width: 860px){
  .help-grid{ grid-template-columns: 1fr; }
}

@media (max-width: 720px){
  .menu-toggle{ display:flex; }

  .site-nav{
    position: absolute; top: calc(100% + 8px); left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 4px;
    padding: 14px; margin: 0 8px;
    background: var(--bg-1); border: 1px solid var(--panel-border);
    border-radius: var(--radius-md);
    display: none;
  }
  .site-nav.open{ display:flex; }
  .site-nav a{ padding: 10px 8px; border-radius: 8px; }
  .site-nav a:hover{ background: var(--panel); }
  .nav-cta{ text-align:center; }

  .page{ padding: 24px 14px 60px; }
  .search-bar{ flex-direction: column; }
  /* В колонке flex-basis влияет на высоту, а не ширину — без сброса поле
     раздувается в квадрат. Явно задаём auto-высоту и 100% ширину. */
  .search-bar input[type="text"],
  .search-bar select,
  .search-bar button{
    flex: 0 0 auto;
    width: 100%;
    height: auto;
  }

  .file-grid{ grid-template-columns: 1fr 1fr; gap:12px; }
}

@media (max-width: 480px){
  .file-grid{ grid-template-columns: 1fr; }
  .header-row{ padding: 10px 14px; }
  .auth-card, .upload-panel{ padding: 24px 18px; }
  .glossary-table{ font-size:0.8rem; }
}

/* Уважение к reduced-motion */
@media (prefers-reduced-motion: reduce){
  .file-card, .btn{ transition: none; }
}

/* Видимый фокус для доступности */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible{
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}