:root {
  --bg: #f4f5f7;
  --bg-card: #ffffff;
  --text: #1a1d23;
  --muted: #6b7280;
  --border: #e5e7eb;
  --red: #e11d2e;
  --red-dark: #b91524;
  --red-soft: rgba(225, 29, 46, 0.1);
  --grey: #6b7280;
  --grey-dark: #374151;
  --dark: #111827;
  --ok: #059669;
  --warn: #d97706;
  --radius: 16px;
  --shadow: 0 10px 30px rgba(17, 24, 39, 0.08);
  --font: "Segoe UI", system-ui, -apple-system, Roboto, Ubuntu, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
}

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

.container { width: min(1100px, 92%); margin: 0 auto; }

/* Header */
.header {
  background: #fff;
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 50;
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 0; gap: 12px;
}
.logo {
  font-size: 1.45rem; font-weight: 800; letter-spacing: -0.02em;
  text-decoration: none !important;
}
.logo .medo { color: var(--red); }
.logo .credit { color: var(--grey-dark); }

.nav { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border: none; border-radius: 12px; padding: 12px 18px;
  font-weight: 700; font-size: 0.95rem; cursor: pointer;
  transition: .15s ease;
}
.btn-primary { background: var(--red); color: #fff; }
.btn-primary:hover { background: var(--red-dark); }
.btn-outline {
  background: #fff; color: var(--text);
  border: 1.5px solid var(--border);
}
.btn-outline:hover { border-color: var(--grey); }
.btn-dark { background: var(--dark); color: #fff; }
.btn-block { width: 100%; }
.btn:disabled { opacity: .55; cursor: not-allowed; }

/* Hero + calculator */
.hero {
  padding: 40px 0 20px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 28px;
  align-items: start;
}
@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; }
}

.hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  line-height: 1.15; margin: 0 0 12px; letter-spacing: -0.03em;
}
.hero h1 span { color: var(--red); }
.lead { color: var(--muted); font-size: 1.05rem; margin: 0 0 22px; }

.bullets { list-style: none; padding: 0; margin: 0 0 20px; }
.bullets li {
  display: flex; gap: 10px; align-items: flex-start;
  margin-bottom: 10px; color: var(--grey-dark); font-size: 0.95rem;
}
.bullets li::before {
  content: "✓"; color: var(--red); font-weight: 800; flex-shrink: 0;
}

.calc-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: var(--shadow);
  padding: 22px;
}
.calc-card h3 { margin: 0 0 16px; font-size: 1.15rem; }

.range-row { margin-bottom: 18px; }
.range-row .top {
  display: flex; justify-content: space-between; margin-bottom: 8px;
  font-size: 0.9rem; color: var(--muted);
}
.range-row .val { color: var(--text); font-weight: 800; font-size: 1.15rem; }
input[type=range] {
  width: 100%; accent-color: var(--red);
}

.summary {
  background: #f9fafb; border-radius: 14px; padding: 14px;
  margin: 8px 0 16px; border: 1px solid var(--border);
}
.summary .row {
  display: flex; justify-content: space-between; margin: 6px 0;
  font-size: 0.95rem;
}
.summary .row.total { font-weight: 800; font-size: 1.1rem; color: var(--red); margin-top: 10px; padding-top: 10px; border-top: 1px dashed var(--border); }

.features {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px;
  padding: 10px 0 40px;
}
@media (max-width: 800px) { .features { grid-template-columns: 1fr; } }
.feature {
  background: #fff; border: 1px solid var(--border); border-radius: 16px; padding: 18px;
}
.feature .ico { font-size: 1.4rem; margin-bottom: 8px; }
.feature h4 { margin: 0 0 6px; }
.feature p { margin: 0; color: var(--muted); font-size: 0.9rem; }

/* Auth */
.auth-wrap {
  min-height: calc(100vh - 70px);
  display: flex; align-items: center; justify-content: center;
  padding: 28px 16px;
}
.auth-card {
  width: 100%; max-width: 420px;
  background: #fff; border: 1px solid var(--border);
  border-radius: 20px; padding: 28px 24px; box-shadow: var(--shadow);
}
.auth-card h2 { margin: 0 0 6px; }
.auth-card .sub { color: var(--muted); margin: 0 0 20px; font-size: 0.92rem; }

.form-group { margin-bottom: 14px; }
.form-group label {
  display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 6px; color: var(--grey-dark);
}
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 12px 14px; border-radius: 12px;
  border: 1.5px solid var(--border); font-size: 1rem; background: #fff;
}
.form-group input:focus, .form-group textarea:focus {
  outline: none; border-color: var(--red); box-shadow: 0 0 0 3px var(--red-soft);
}
.phone-input { display: flex; gap: 0; }
.phone-prefix {
  background: #f3f4f6; border: 1.5px solid var(--border); border-right: 0;
  border-radius: 12px 0 0 12px; padding: 12px 10px; font-weight: 700; color: var(--grey-dark);
}
.phone-input input { border-radius: 0 12px 12px 0; }
.error-msg { color: var(--red); font-size: 0.8rem; margin-top: 4px; display: none; }

/* Cabinet */
.cab-grid {
  display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 18px;
  padding: 24px 0 40px;
}
@media (max-width: 800px) { .cab-grid { grid-template-columns: 1fr; } }
.card {
  background: #fff; border: 1px solid var(--border); border-radius: 18px;
  padding: 20px; box-shadow: var(--shadow);
}
.card h3 { margin: 0 0 14px; }
.badge {
  display: inline-block; padding: 4px 10px; border-radius: 999px;
  font-size: 0.78rem; font-weight: 700;
}
.badge-pending { background: #fef3c7; color: #92400e; }
.badge-need { background: #fee2e2; color: #991b1b; }
.badge-active { background: #d1fae5; color: #065f46; }
.badge-overdue { background: #fecaca; color: #7f1d1d; }
.badge-closed { background: #e5e7eb; color: #374151; }
.badge-rejected { background: #f3f4f6; color: #6b7280; }

.stat-row { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px solid #f3f4f6; }
.stat-row:last-child { border-bottom: 0; }

/* Modal */
.modal-backdrop {
  position: fixed; inset: 0; background: rgba(17,24,39,.55);
  display: none; align-items: center; justify-content: center; z-index: 100; padding: 16px;
}
.modal-backdrop.show { display: flex; }
.modal {
  background: #fff; border-radius: 18px; padding: 22px; width: min(440px, 100%);
  box-shadow: 0 20px 50px rgba(0,0,0,.25);
}
.modal h3 { margin: 0 0 8px; }
.modal p { color: var(--muted); margin: 0 0 14px; }

.toast {
  position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%);
  background: var(--dark); color: #fff; padding: 12px 18px; border-radius: 12px;
  display: none; z-index: 200; font-size: 0.92rem;
}
.toast.show { display: block; }
.toast.err { background: var(--red); }

.footer {
  border-top: 1px solid var(--border); padding: 24px 0; color: var(--muted);
  font-size: 0.85rem; text-align: center;
}

.section { padding: 12px 0 36px; }
.section h2 { margin: 0 0 18px; font-size: 1.45rem; letter-spacing: -0.02em; }
.steps {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px;
}
@media (max-width: 800px) { .steps { grid-template-columns: 1fr 1fr; } }
@media (max-width: 520px) { .steps { grid-template-columns: 1fr; } }
.step {
  background: #fff; border: 1px solid var(--border); border-radius: 16px; padding: 16px;
}
.step .n {
  width: 32px; height: 32px; border-radius: 10px; background: var(--red-soft);
  color: var(--red); font-weight: 800; display: flex; align-items: center; justify-content: center;
  margin-bottom: 10px;
}
.step h4 { margin: 0 0 6px; }
.step p { margin: 0; color: var(--muted); font-size: 0.9rem; }

.faq details {
  background: #fff; border: 1px solid var(--border); border-radius: 14px;
  padding: 12px 16px; margin-bottom: 8px;
}
.faq summary { cursor: pointer; font-weight: 700; }
.faq p { margin: 8px 0 0; color: var(--muted); font-size: 0.92rem; }

.footer-links { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-bottom: 8px; }
.footer-links a { color: var(--grey-dark); }

/* Admin dark-ish */
.admin-body { background: #0f1419; color: #e8eef0; }
.admin-body .header { background: #151b22; border-color: #243040; }
.admin-body .logo .credit { color: #9ca3af; }
.admin-card {
  background: #151b22; border: 1px solid #243040; border-radius: 14px; padding: 16px; margin-bottom: 14px;
}
.admin-table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
.admin-table th, .admin-table td {
  padding: 10px 8px; border-bottom: 1px solid #243040; text-align: left; vertical-align: top;
}
.admin-table th { color: #9ca3af; font-weight: 600; }
.admin-stats { display: flex; flex-wrap: wrap; gap: 10px; margin: 16px 0; }
.admin-stat {
  background: #151b22; border: 1px solid #243040; border-radius: 12px;
  padding: 12px 16px; min-width: 120px;
}
.admin-stat b { display: block; font-size: 1.3rem; color: #fff; }
.admin-stat span { color: #9ca3af; font-size: 0.8rem; }
.btn-sm { padding: 7px 10px; font-size: 0.8rem; border-radius: 8px; }
.btn-ok { background: #059669; color: #fff; }
.btn-warn { background: #d97706; color: #fff; }
.btn-danger { background: var(--red); color: #fff; }