/* ============================================================
   Yycloud — закрытое облачное хранилище
   Единая таблица стилей: лендинг, страница входа, личный кабинет
   ============================================================ */

:root {
  --bg: #0a0f1e;
  --bg-soft: #0e1528;
  --card: #121a30;
  --card-hover: #16203a;
  --border: #22304f;
  --text: #e8edf7;
  --text-dim: #93a1bd;
  --accent: #6d5cff;
  --accent-2: #21c8f6;
  --gradient: linear-gradient(135deg, #6d5cff 0%, #21c8f6 100%);
  --danger: #ff6b81;
  --ok: #2ee6a8;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(4, 8, 20, .45);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a { color: var(--accent-2); text-decoration: none; }
a:hover { text-decoration: underline; }

img, svg { vertical-align: middle; }

.container {
  width: min(1160px, 92%);
  margin: 0 auto;
}

.mono { font-variant-numeric: tabular-nums; }

/* ---------- Кнопки ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 10px;
  border: 1px solid transparent;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
  white-space: nowrap;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 8px 20px rgba(109, 92, 255, .35);
}
.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}
.btn-ghost:hover { border-color: var(--accent-2); }
.btn-sm { padding: 7px 14px; font-size: 13px; }

/* ---------- Шапка лендинга ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10, 15, 30, .82);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.site-header .container {
  display: flex;
  align-items: center;
  gap: 32px;
  height: 68px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: .3px;
}
.brand:hover { text-decoration: none; }
.brand .logo-badge {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--gradient);
  display: grid;
  place-items: center;
  color: #fff;
}
.main-nav {
  display: flex;
  gap: 26px;
  margin-left: auto;
}
.main-nav a {
  color: var(--text-dim);
  font-size: 15px;
}
.main-nav a:hover { color: var(--text); text-decoration: none; }
.nav-toggle {
  display: none;
  margin-left: auto;
  background: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  padding: 8px 10px;
  cursor: pointer;
}

/* ---------- Герой ---------- */
.hero {
  padding: 96px 0 72px;
  background:
    radial-gradient(700px 340px at 15% 0%, rgba(109, 92, 255, .22), transparent 60%),
    radial-gradient(700px 340px at 85% 10%, rgba(33, 200, 246, .16), transparent 60%);
}
.hero .container {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 56px;
  align-items: center;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg-soft);
  color: var(--text-dim);
  font-size: 13px;
}
.badge .dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 10px var(--ok);
}
.hero h1 {
  font-size: clamp(32px, 4.6vw, 52px);
  line-height: 1.12;
  margin: 22px 0 18px;
  letter-spacing: -.5px;
}
.hero h1 .grad {
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero p.lead {
  font-size: 18px;
  color: var(--text-dim);
  max-width: 560px;
  margin: 0 0 32px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-note {
  margin-top: 18px;
  font-size: 13px;
  color: var(--text-dim);
}

.hero-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 26px;
}
.hero-card h3 { margin: 0 0 16px; font-size: 15px; color: var(--text-dim); font-weight: 600; }
.file-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-radius: 10px;
  background: var(--bg-soft);
  border: 1px solid transparent;
  margin-bottom: 10px;
  font-size: 14px;
}
.file-row:hover { border-color: var(--border); }
.file-row .fname { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file-row .fsize { color: var(--text-dim); font-size: 12.5px; }
.file-row .fok {
  font-size: 11px;
  color: var(--ok);
  border: 1px solid rgba(46, 230, 168, .4);
  border-radius: 6px;
  padding: 2px 8px;
}
.hero-card .sync-line {
  margin-top: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  color: var(--text-dim);
}
.sync-bar { flex: 1; height: 6px; border-radius: 3px; background: var(--bg); overflow: hidden; }
.sync-bar i { display: block; height: 100%; width: 68%; background: var(--gradient); border-radius: 3px; }

/* ---------- Полоса статистики ---------- */
.stats-strip {
  border-block: 1px solid var(--border);
  background: var(--bg-soft);
}
.stats-strip .container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding: 30px 0;
}
.stat b { display: block; font-size: 26px; letter-spacing: -.5px; }
.stat span { color: var(--text-dim); font-size: 13.5px; }

/* ---------- Секции ---------- */
.section { padding: 88px 0; }
.section.alt { background: var(--bg-soft); border-block: 1px solid var(--border); }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 56px; }
.section-head .kicker {
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 12px;
  font-weight: 700;
  color: var(--accent-2);
}
.section-head h2 { font-size: clamp(26px, 3vw, 36px); margin: 12px 0 14px; letter-spacing: -.5px; }
.section-head p { color: var(--text-dim); margin: 0; }

/* ---------- Возможности ---------- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.feature {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  transition: border-color .2s ease, transform .2s ease;
}
.feature:hover { border-color: var(--accent); transform: translateY(-3px); }
.feature .icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: rgba(109, 92, 255, .14);
  color: var(--accent-2);
  display: grid;
  place-items: center;
  margin-bottom: 18px;
}
.feature h3 { margin: 0 0 8px; font-size: 17px; }
.feature p { margin: 0; color: var(--text-dim); font-size: 14.5px; }

/* ---------- Шаги доступа ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  counter-reset: step;
}
.step {
  position: relative;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 26px 26px;
}
.step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  position: absolute;
  top: 18px;
  right: 22px;
  font-size: 34px;
  font-weight: 800;
  color: rgba(147, 161, 189, .18);
}
.step h3 { margin: 0 0 10px; font-size: 17px; }
.step p { margin: 0; color: var(--text-dim); font-size: 14.5px; }

/* ---------- Тарифы ---------- */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  align-items: stretch;
}
.plan {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  position: relative;
}
.plan.featured { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent), var(--shadow); }
.plan .tag {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 999px;
  white-space: nowrap;
}
.plan h3 { margin: 0 0 4px; font-size: 19px; }
.plan .price { font-size: 40px; font-weight: 800; letter-spacing: -1px; margin: 14px 0 2px; }
.plan .price small { font-size: 15px; color: var(--text-dim); font-weight: 500; }
.plan .desc { color: var(--text-dim); font-size: 14px; margin: 0 0 22px; }
.plan ul {
  list-style: none;
  margin: 0 0 26px;
  padding: 0;
  display: grid;
  gap: 11px;
  font-size: 14.5px;
  flex: 1;
}
.plan ul li { display: flex; gap: 10px; align-items: flex-start; }
.plan ul li::before {
  content: "";
  flex: 0 0 16px;
  height: 16px;
  margin-top: 4px;
  border-radius: 50%;
  background:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%232ee6a8' stroke-width='3'%3E%3Cpath d='M5 13l4 4L19 7'/%3E%3C/svg%3E") center/contain no-repeat;
}
.pricing-note {
  text-align: center;
  color: var(--text-dim);
  font-size: 13.5px;
  margin-top: 26px;
}

/* ---------- Безопасность ---------- */
.security-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}
.security-item {
  display: flex;
  gap: 18px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}
.security-item .icon {
  flex: 0 0 46px;
  width: 46px; height: 46px;
  border-radius: 12px;
  background: rgba(33, 200, 246, .12);
  color: var(--accent-2);
  display: grid;
  place-items: center;
}
.security-item h3 { margin: 0 0 6px; font-size: 16px; }
.security-item p { margin: 0; color: var(--text-dim); font-size: 14px; }

/* ---------- FAQ ---------- */
.faq-list { max-width: 780px; margin: 0 auto; display: grid; gap: 12px; }
.faq-list details {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px 22px;
}
.faq-list summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 15.5px;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after {
  content: "+";
  font-size: 22px;
  color: var(--accent-2);
  transition: transform .2s ease;
}
.faq-list details[open] summary::after { transform: rotate(45deg); }
.faq-list details p { margin: 14px 0 2px; color: var(--text-dim); font-size: 14.5px; }

/* ---------- CTA + футер ---------- */
.cta-band { text-align: center; }
.cta-band h2 { font-size: clamp(26px, 3vw, 36px); margin: 0 0 14px; letter-spacing: -.5px; }
.cta-band p { color: var(--text-dim); margin: 0 0 30px; }

.site-footer {
  border-top: 1px solid var(--border);
  background: var(--bg-soft);
  padding: 44px 0 34px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 34px;
}
.footer-grid h4 { margin: 0 0 14px; font-size: 14px; color: var(--text); }
.footer-grid ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 9px; font-size: 14px; }
.footer-grid ul a { color: var(--text-dim); }
.footer-grid .about { color: var(--text-dim); font-size: 14px; margin: 12px 0 0; max-width: 300px; }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 22px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  color: var(--text-dim);
  font-size: 13px;
}

/* ---------- Страница входа ---------- */
.auth-body {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
  background:
    radial-gradient(600px 320px at 20% 10%, rgba(109, 92, 255, .25), transparent 60%),
    radial-gradient(600px 320px at 80% 90%, rgba(33, 200, 246, .18), transparent 60%),
    var(--bg);
}
.auth-card {
  width: min(420px, 100%);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 40px 36px;
}
.auth-card .brand { justify-content: center; width: 100%; margin-bottom: 8px; }
.auth-card h1 { text-align: center; font-size: 22px; margin: 18px 0 6px; }
.auth-card .sub { text-align: center; color: var(--text-dim); font-size: 14px; margin: 0 0 28px; }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 13px; color: var(--text-dim); margin-bottom: 7px; }
.field input {
  width: 100%;
  padding: 13px 15px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--bg-soft);
  color: var(--text);
  font-size: 15px;
  outline: none;
  transition: border-color .15s ease;
}
.field input:focus { border-color: var(--accent); }
.field .wrap { position: relative; }
.field .wrap input { padding-right: 46px; }
.eye {
  position: absolute;
  right: 8px; top: 50%;
  transform: translateY(-50%);
  background: none; border: none; color: var(--text-dim);
  cursor: pointer; padding: 6px;
}
.auth-error {
  display: none;
  background: rgba(255, 107, 129, .1);
  border: 1px solid rgba(255, 107, 129, .45);
  color: var(--danger);
  border-radius: 10px;
  padding: 11px 14px;
  font-size: 13.5px;
  margin-bottom: 18px;
}
.auth-error.show { display: block; }
.auth-submit { width: 100%; justify-content: center; }
.auth-links {
  display: flex;
  justify-content: space-between;
  margin-top: 20px;
  font-size: 13.5px;
}
.demo-note {
  margin-top: 26px;
  border-top: 1px dashed var(--border);
  padding-top: 18px;
  font-size: 12.5px;
  color: var(--text-dim);
  text-align: center;
}
.demo-note code {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2px 7px;
  color: var(--accent-2);
}

/* ---------- Личный кабинет ---------- */
.app-layout {
  display: grid;
  grid-template-columns: 264px 1fr;
  min-height: 100vh;
}
.sidebar {
  background: var(--bg-soft);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 22px 16px;
  position: sticky;
  top: 0;
  height: 100vh;
}
.sidebar .brand { padding: 4px 10px 22px; font-size: 18px; }
.side-nav { display: grid; gap: 4px; }
.side-nav a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 12px;
  border-radius: 10px;
  color: var(--text-dim);
  font-size: 14.5px;
}
.side-nav a:hover { background: var(--card); color: var(--text); text-decoration: none; }
.side-nav a.active { background: rgba(109, 92, 255, .16); color: var(--text); }
.side-user {
  margin-top: auto;
  border-top: 1px solid var(--border);
  padding-top: 16px;
  display: grid;
  gap: 12px;
}
.side-user .who { display: flex; align-items: center; gap: 12px; }
.avatar {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--gradient);
  color: #fff;
  font-weight: 700;
  font-size: 14px;
  display: grid;
  place-items: center;
}
.side-user b { display: block; font-size: 14px; }
.side-user span { font-size: 12px; color: var(--text-dim); }

.main { padding: 26px 32px 48px; min-width: 0; }
.main-top {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 22px;
}
.breadcrumb { font-size: 15px; color: var(--text-dim); }
.breadcrumb b { color: var(--text); }
.breadcrumb a { color: var(--text-dim); }
.search-box {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 9px 14px;
  min-width: 240px;
}
.search-box input {
  background: none; border: none; outline: none;
  color: var(--text); font-size: 14px; width: 100%;
}
.main-actions { display: flex; gap: 10px; }

.usage-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 22px;
  margin-bottom: 22px;
  display: flex;
  align-items: center;
  gap: 18px;
}
.usage-card .label { font-size: 14px; color: var(--text-dim); white-space: nowrap; }
.usage-card .label b { color: var(--text); }
.usage-track { flex: 1; height: 10px; border-radius: 5px; background: var(--bg); overflow: hidden; }
.usage-track i {
  display: block; height: 100%; width: 68%;
  background: var(--gradient); border-radius: 5px;
  transition: width .4s ease;
}

.files-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.files-head, .files-row {
  display: grid;
  grid-template-columns: 1fr 120px 150px 90px;
  gap: 16px;
  align-items: center;
  padding: 13px 22px;
}
.files-head {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-dim);
  border-bottom: 1px solid var(--border);
}
.files-row { border-bottom: 1px solid rgba(34, 48, 79, .5); font-size: 14.5px; }
.files-row:last-child { border-bottom: none; }
.files-row:hover { background: var(--card-hover); }
.files-row .name { display: flex; align-items: center; gap: 12px; min-width: 0; }
.files-row .name span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.files-row .folder-link { cursor: pointer; color: var(--accent-2); }
.files-row .meta { color: var(--text-dim); font-size: 13px; }
.row-actions { display: flex; gap: 6px; justify-content: flex-end; }
.icon-btn {
  background: none;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  padding: 5px;
  border-radius: 7px;
}
.icon-btn:hover { color: var(--text); background: var(--bg-soft); }
.icon-btn.danger:hover { color: var(--danger); }
.files-empty {
  padding: 46px 22px;
  text-align: center;
  color: var(--text-dim);
  font-size: 14.5px;
}
.upload-progress {
  display: none;
  padding: 14px 22px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-soft);
  font-size: 13.5px;
  color: var(--text-dim);
}
.upload-progress.show { display: block; }
.upload-progress .bar { margin-top: 8px; height: 6px; border-radius: 3px; background: var(--bg); overflow: hidden; }
.upload-progress .bar i { display: block; height: 100%; width: 0; background: var(--gradient); transition: width .2s linear; }

/* ---------- Адаптив ---------- */
@media (max-width: 980px) {
  .hero .container { grid-template-columns: 1fr; gap: 40px; }
  .features-grid, .steps, .pricing-grid { grid-template-columns: 1fr 1fr; }
  .security-grid { grid-template-columns: 1fr; }
  .stats-strip .container { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .app-layout { grid-template-columns: 1fr; }
  .sidebar {
    position: static;
    height: auto;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
  }
  .sidebar .brand { padding: 0; }
  .side-nav { display: flex; flex-wrap: wrap; order: 3; width: 100%; }
  .side-user { margin: 0 0 0 auto; border: none; padding: 0; display: flex; align-items: center; }
}
@media (max-width: 640px) {
  .features-grid, .steps, .pricing-grid, .stats-strip .container { grid-template-columns: 1fr; }
  .main-nav {
    display: none;
    position: absolute;
    top: 68px; left: 0; right: 0;
    flex-direction: column;
    background: var(--bg-soft);
    border-bottom: 1px solid var(--border);
    padding: 18px 4%;
    gap: 14px;
  }
  .main-nav.open { display: flex; }
  .nav-toggle { display: block; }
  .files-head, .files-row { grid-template-columns: 1fr 90px 90px; }
  .files-head .h-actions, .files-row .row-actions { display: none; }
  .search-box { min-width: 0; width: 100%; order: 5; margin-left: 0; }
}