:root {
  --bg: #ffffff;
  --bg-alt: #f5f5f5;
  --border: #e0e0e0;
  --border-dark: #1a1a1a;
  --text: #0a0a0a;
  --text-muted: #666666;
  --text-light: #999999;
  --font: "Inter", system-ui, sans-serif;
  --mono: "JetBrains Mono", monospace;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
}

a { color: var(--text); text-underline-offset: 3px; }
a:hover { opacity: 0.7; }

.container { width: min(1080px, calc(100% - 2.5rem)); margin: 0 auto; }

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 0;
  gap: 1rem;
}

.logo {
  font-weight: 800;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.nav-links { display: flex; gap: 1.25rem; align-items: center; flex-wrap: wrap; }
.nav-links a { text-decoration: none; font-size: 0.92rem; font-weight: 500; }

.hero {
  border-bottom: 1px solid var(--border-dark);
  background: var(--bg-alt);
  padding: 3.5rem 0 3rem;
}

.hero-label {
  margin: 0 0 0.75rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-light);
}

.hero h1 {
  margin: 0 0 1rem;
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
}

.hero-text {
  margin: 0 0 1.5rem;
  color: var(--text-muted);
  max-width: 52ch;
  font-size: 1.05rem;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.25rem;
  font-family: var(--font);
  font-size: 0.92rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid var(--border-dark);
  cursor: pointer;
  background: var(--bg);
  color: var(--text);
  transition: opacity 0.2s;
}

.btn:hover { opacity: 0.75; }
.btn-primary { background: var(--border-dark); color: var(--bg); }
.btn-block { width: 100%; }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }

.section { padding: 3rem 0; border-bottom: 1px solid var(--border); }
.section h2 {
  margin: 0 0 1.25rem;
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.feature {
  border: 1px solid var(--border);
  padding: 1.25rem;
  background: var(--bg);
}

.feature h3 { margin: 0 0 0.5rem; font-size: 1rem; }
.feature p { margin: 0; color: var(--text-muted); font-size: 0.92rem; }

.auth-page {
  min-height: calc(100dvh - 60px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
}

.auth-card {
  width: min(420px, 100%);
  border: 1px solid var(--border-dark);
  padding: 1.75rem;
}

.auth-card h1 {
  margin: 0 0 0.35rem;
  font-size: 1.5rem;
  font-weight: 800;
}

.auth-sub { margin: 0 0 1.5rem; color: var(--text-muted); font-size: 0.92rem; }

.field { margin-bottom: 1rem; }
.field label {
  display: block;
  margin-bottom: 0.35rem;
  font-family: var(--mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-light);
}

.field input {
  width: 100%;
  padding: 0.75rem 0.85rem;
  border: 1px solid var(--border-dark);
  font-family: var(--font);
  font-size: 1rem;
  background: var(--bg);
}

.field input:focus { outline: 2px solid var(--border-dark); outline-offset: 1px; }

.field-hint {
  margin: 0.35rem 0 0;
  font-size: 0.78rem;
  color: var(--text-light);
}

.user-badge {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-family: var(--mono);
}

.form-msg {
  margin: 0.75rem 0 0;
  font-size: 0.88rem;
  color: #b00020;
  min-height: 1.2em;
}

.form-msg.ok { color: #0a6b0a; }

.auth-footer {
  margin-top: 1.25rem;
  font-size: 0.9rem;
  color: var(--text-muted);
  text-align: center;
}

.cabinet-grid {
  display: grid;
  gap: 1rem;
  max-width: 640px;
  margin: 2rem auto;
  padding: 0 1.25rem 3rem;
}

.card {
  border: 1px solid var(--border-dark);
  padding: 1.25rem;
}

.card-muted { background: var(--bg-alt); border-color: var(--border); }

.card-label {
  margin: 0 0 0.5rem;
  font-family: var(--mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-light);
}

.status-title { margin: 0; font-size: 1.35rem; font-weight: 700; }
.status-meta { margin: 0.35rem 0 0; color: var(--text-muted); font-size: 0.92rem; }

.mono-box {
  margin: 0 0 0.85rem;
  padding: 0.75rem;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 0.72rem;
  word-break: break-all;
  line-height: 1.5;
  max-height: 5rem;
  overflow-y: auto;
}

.plans-list { display: grid; gap: 0.65rem; }
.plan-item {
  border: 1px solid var(--border-dark);
  padding: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}
.plan-item strong { display: block; }
.plan-item span { color: var(--text-muted); font-size: 0.9rem; }

.payment-box { margin-top: 1rem; padding-top: 1rem; border-top: 1px solid var(--border); }
.payment-box p { margin: 0.35rem 0; font-size: 0.9rem; }
.payment-box code { font-family: var(--mono); font-size: 0.82rem; }
.payment-note { margin-top: 0.75rem; color: var(--text-muted); font-size: 0.88rem; }
.payment-note.ok-msg { color: #0a6b0a; font-weight: 600; }

.steps { margin: 0; padding-left: 1.2rem; color: var(--text-muted); }
.steps li { margin-bottom: 0.4rem; }

.footer {
  padding: 2rem 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--border);
}

.hidden { display: none !important; }

@media (max-width: 600px) {
  .nav-links .hide-mobile { display: none; }
}