:root {
  --bg: #07111f;
  --surface: rgba(12, 19, 33, 0.78);
  --surface-2: rgba(18, 28, 47, 0.92);
  --text: #f3f7ff;
  --muted: #94a3b8;
  --line: rgba(255, 255, 255, 0.12);
  --accent: #4f8cff;
  --accent-2: #2dd4bf;
  --danger: #ef4444;
  --success: #22c55e;
  --warning: #f59e0b;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.35);
  --radius: 24px;
  --maxw: 1240px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, system-ui, sans-serif;
  background: radial-gradient(circle at top left, rgba(79,140,255,.18), transparent 35%), var(--bg);
  color: var(--text);
  min-height: 100vh;
}

a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button { cursor: pointer; }

.shell { width: min(var(--maxw), calc(100% - 40px)); margin: 0 auto; }
.section { padding: 34px 0 72px; }
.card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.soft-card { background: var(--surface); backdrop-filter: blur(18px); }
.gradient-card {
  background: linear-gradient(145deg, rgba(79,140,255,.28), rgba(45,212,191,.12));
  border: 1px solid rgba(255,255,255,.08);
}

.bg-grid {
  position: fixed; inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(circle at center, rgba(0,0,0,1), rgba(0,0,0,0.1));
  pointer-events: none; z-index: -2;
}
.bg-orb {
  position: fixed; width: 420px; height: 420px; border-radius: 50%; filter: blur(90px); opacity: .35; pointer-events: none; z-index: -1;
}
.orb-1 { top: -120px; right: -40px; background: #2f6fff; }
.orb-2 { bottom: -180px; left: -80px; background: #1bc5ad; }

.topbar {
  display: flex; align-items: center; justify-content: space-between;
  gap: 18px; padding: 24px 0; position: sticky; top: 0; z-index: 10;
  backdrop-filter: blur(18px);
}
.brand { display: flex; align-items: center; gap: 14px; }
.brand-mark {
  width: 46px; height: 46px; border-radius: 16px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--accent), #7c5cff);
  font-weight: 800; font-size: 24px;
}
.brand strong { display: block; font-size: 16px; }
.brand small { color: var(--muted); }
.topnav { display: flex; gap: 18px; color: var(--muted); }
.topnav a:hover { color: var(--text); }
.topbar-actions { display: flex; gap: 12px; }

.hero {
  padding: 26px 0 42px;
  display: grid;
  grid-template-columns: 1.2fr .9fr;
  gap: 24px;
}
.hero-copy, .hero-stats { padding: 34px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 999px; padding: 8px 12px;
  color: #d4e3ff; font-size: 13px; margin-bottom: 18px;
}
.hero h1 { font-size: clamp(38px, 5vw, 62px); line-height: 1.04; margin: 0 0 16px; }
.hero p { color: var(--muted); font-size: 17px; line-height: 1.7; margin: 0 0 24px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 22px; }
.hero-points { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; color: #e4eeff; }
.hero-points li::before { content: '•'; color: var(--accent-2); margin-right: 10px; }
.stat-chip {
  display: inline-flex; flex-direction: column; gap: 6px;
  background: rgba(255,255,255,.08); border-radius: 18px; padding: 16px 18px; margin-bottom: 20px;
}
.stat-chip span { color: #dbe7ff; font-size: 13px; }
.stat-chip strong { font-size: 18px; }
.stat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.stat-grid div { background: rgba(8, 13, 24, .25); padding: 18px; border-radius: 18px; }
.stat-grid span { display: block; color: #d8e4ff; font-size: 13px; margin-bottom: 8px; }
.stat-grid strong { font-size: 18px; }

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.feature-card { padding: 24px; }
.feature-card h3 { margin: 0 0 10px; }
.feature-card p { margin: 0; color: var(--muted); line-height: 1.7; }

.section-head { display: flex; justify-content: space-between; gap: 24px; align-items: end; margin-bottom: 26px; }
.section-head h2 { margin: 6px 0 0; font-size: clamp(28px, 4vw, 40px); }
.section-head p { max-width: 520px; color: var(--muted); line-height: 1.7; }

.tariff-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.tariff-card { padding: 24px; display: flex; flex-direction: column; gap: 18px; }
.tariff-card.featured { border-color: rgba(79,140,255,.34); background: linear-gradient(180deg, rgba(79,140,255,.14), rgba(255,255,255,.04)); }
.tariff-top { display: flex; justify-content: space-between; gap: 12px; align-items: start; }
.tariff-title { font-size: 22px; font-weight: 700; }
.tariff-price { font-size: 34px; font-weight: 800; }
.tariff-submeta, .tariff-meta, .tariff-footnote { color: var(--muted); font-size: 14px; }
.tariff-desc { color: #dbe5f4; min-height: 48px; }
.tariff-badge {
  padding: 6px 10px; border-radius: 999px; background: rgba(79,140,255,.18); color: #dbe7ff; font-size: 12px; font-weight: 600;
}

.cabinet-layout { display: grid; grid-template-columns: 320px 1fr; gap: 22px; }
.cabinet-sidebar { padding: 24px; position: sticky; top: 92px; height: fit-content; }
.profile-box { display: flex; align-items: center; gap: 14px; padding-bottom: 18px; border-bottom: 1px solid var(--line); }
.avatar {
  width: 58px; height: 58px; border-radius: 18px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--accent), #7c5cff);
  font-weight: 800; font-size: 24px;
}
.profile-box p { margin: 4px 0 0; color: var(--muted); }
.oauth-box { padding: 18px 0; border-bottom: 1px solid var(--line); color: var(--muted); }
.oauth-chips { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 12px; }
.oauth-chip {
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.04);
  color: #d7e7ff; border-radius: 999px; padding: 9px 14px;
}
.oauth-chip:disabled { opacity: .68; cursor: not-allowed; }
.sidebar-actions { display: grid; gap: 12px; padding-top: 18px; }
.cabinet-content { display: grid; gap: 22px; }
.dashboard-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.card-head { display: flex; justify-content: space-between; gap: 14px; align-items: center; margin-bottom: 18px; }
.card h3 { margin: 0; font-size: 22px; }
.card-body, .list-box, .profiles-grid { min-height: 120px; }
.empty-state { color: var(--muted); display: grid; place-items: center; text-align: center; padding: 18px; }
.muted { color: var(--muted); }
.status-pill {
  padding: 8px 12px; border-radius: 999px; background: rgba(255,255,255,.08); color: #dbe7ff; font-size: 13px;
}
.notice { padding: 18px 20px; }
.notice p { margin: 10px 0 0; color: var(--muted); }
.link-form { display: flex; gap: 10px; margin-top: 14px; }
.link-form input {
  flex: 1; border: 1px solid rgba(255,255,255,.1); background: rgba(255,255,255,.04);
  color: white; border-radius: 14px; padding: 12px 14px; outline: none;
}
.action-rail { padding: 22px 24px; }
.action-card { display: flex; justify-content: space-between; gap: 18px; align-items: center; }
.action-card p { margin: 10px 0 0; color: var(--muted); line-height: 1.7; }
.inline-actions { display: flex; gap: 12px; align-items: center; }
.inline-actions.wrap { flex-wrap: wrap; }

.quick-connect { margin-bottom: 18px; }
.quick-connect-card {
  display: flex; justify-content: space-between; gap: 16px; align-items: center;
  background: rgba(79,140,255,.1); border: 1px solid rgba(79,140,255,.2);
  border-radius: 18px; padding: 18px;
}
.quick-connect-card p { margin: 8px 0 0; color: #dbe7ff; }

.profiles-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.profile-card, .payment-card, .howto-card, .subscription-card {
  border: 1px solid var(--line);
  background: rgba(255,255,255,.03);
  border-radius: 20px;
  padding: 18px;
}
.profile-card.primary-profile { border-color: rgba(45,212,191,.3); }
.profile-card header, .payment-card header { display: flex; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.profile-card strong, .payment-card strong { font-size: 18px; }
.payment-card small, .profile-card small { color: var(--muted); }
.profile-url, .mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; word-break: break-all; }
.profile-url {
  margin-top: 12px; padding: 10px 12px; border-radius: 14px; background: rgba(255,255,255,.04); color: #dbe7ff;
}
.payment-help { margin-top: 10px; color: var(--muted); font-size: 14px; }
.subscription-card dl { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 18px; margin: 0; }
.subscription-card dt { color: var(--muted); font-size: 13px; }
.subscription-card dd { margin: 4px 0 0; font-weight: 600; }
.subscription-actions { margin-top: 18px; }

.platform-tabs { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 18px; }
.platform-tab {
  padding: 11px 14px; border-radius: 999px; border: 1px solid var(--line);
  background: rgba(255,255,255,.04); color: #dce8ff;
}
.platform-tab.active { background: linear-gradient(135deg, var(--accent), #7c5cff); border-color: transparent; }
.howto-grid { display: grid; grid-template-columns: 1fr; gap: 18px; }
.howto-card h3 { margin-top: 0; }
.howto-card.expanded { padding: 24px; }
.howto-card ol { padding-left: 18px; color: #dce6f7; line-height: 1.75; }
.howto-card p { color: var(--muted); }
.howto-support { margin-top: 18px; color: var(--muted); display: flex; gap: 10px; flex-wrap: wrap; }
.howto-support a { color: #cfe1ff; }

.primary-btn, .ghost-btn, .danger-btn {
  border: none; border-radius: 16px; padding: 14px 18px; font-weight: 700; transition: transform .18s ease, opacity .18s ease;
}
.primary-btn:hover, .ghost-btn:hover, .danger-btn:hover { transform: translateY(-1px); }
.primary-btn {
  background: linear-gradient(135deg, var(--accent), #7c5cff);
  color: white;
}
.ghost-btn {
  background: rgba(255,255,255,.06);
  color: white;
  border: 1px solid rgba(255,255,255,.12);
}
.danger-btn {
  background: rgba(239,68,68,.18);
  color: #ffe5e5;
  border: 1px solid rgba(239,68,68,.28);
}
.block { width: 100%; }
.hidden { display: none !important; }

.modal { position: fixed; inset: 0; z-index: 30; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(3, 8, 17, .72); backdrop-filter: blur(10px); }
.modal-dialog { position: relative; z-index: 1; width: min(560px, calc(100% - 28px)); margin: 6vh auto 0; padding: 28px; }
.modal-close {
  position: absolute; top: 16px; right: 16px; width: 38px; height: 38px; border-radius: 12px; border: none;
  background: rgba(255,255,255,.08); color: white; font-size: 22px;
}
.auth-tabs { display: flex; gap: 10px; margin-bottom: 22px; }
.auth-tab {
  flex: 1; padding: 12px; border-radius: 14px; border: 1px solid var(--line);
  background: rgba(255,255,255,.04); color: #dbe7ff; font-weight: 700;
}
.auth-tab.active { background: linear-gradient(135deg, var(--accent), #7c5cff); color: white; border-color: transparent; }
.auth-form { display: grid; gap: 14px; }
.auth-form h3 { margin: 0 0 6px; }
.auth-form p { margin: 0 0 8px; color: var(--muted); }
.auth-form label { display: grid; gap: 8px; }
.auth-form span { color: #d9e6ff; font-size: 14px; }
.auth-form input {
  border: 1px solid rgba(255,255,255,.1); background: rgba(255,255,255,.04);
  color: white; border-radius: 16px; padding: 14px 16px; outline: none;
}
.oauth-promo { margin-top: 20px; color: var(--muted); }

.toast {
  position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%);
  background: rgba(8, 12, 22, .92); border: 1px solid var(--line);
  border-radius: 16px; padding: 14px 18px; z-index: 40; box-shadow: var(--shadow);
}

@media (max-width: 1080px) {
  .hero, .cabinet-layout, .dashboard-grid, .tariff-grid, .feature-grid, .profiles-grid, .action-card, .quick-connect-card {
    grid-template-columns: 1fr;
    flex-direction: column;
    align-items: stretch;
  }
  .cabinet-sidebar { position: static; }
  .section-head, .topbar { flex-direction: column; align-items: start; }
  .topnav { flex-wrap: wrap; }
}

@media (max-width: 640px) {
  .shell { width: min(var(--maxw), calc(100% - 24px)); }
  .hero-copy, .hero-stats, .cabinet-sidebar, .modal-dialog, .action-rail { padding: 22px; }
  .hero h1 { font-size: 34px; }
  .topbar-actions { width: 100%; }
  .topbar-actions .primary-btn, .topbar-actions .ghost-btn { flex: 1; }
  .link-form { flex-direction: column; }
  .subscription-card dl { grid-template-columns: 1fr; }
}