/* Лендинг, оболочка и переключение видов (плюс стили формы из 1.0) */
:root {
  --bg: #f5f7fb;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --border: #e5e7eb;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --danger: #dc2626;
  --danger-hover: #b91c1c;
  --success: #16a34a;
  --success-hover: #15803d;
  --success-bg: #ecfdf5;
  --success-text: #065f46;
  --success-border: #a7f3d0;
  --paid-bg: #f0fdf4;
  --paid-border: #86efac;
  --paid-text: #166534;
  --critical-bg: #fef2f2;
  --critical-text: #991b1b;
  --critical-border: #fecaca;
  --neutral-bg: #f3f4f6;
  --neutral-text: #374151;
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
  --radius: 18px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, Helvetica, sans-serif;
  background: var(--bg);
  color: var(--text);
}

body {
  min-height: 100vh;
}

body.view-landing #app {
  display: none;
}

body.view-app #landing {
  display: none;
}

.app-shell {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--card) 88%, transparent);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(10px);
}

.topbar__inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 14px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand__logo {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), #1d4ed8);
  box-shadow: 0 8px 18px rgba(37, 99, 235, 0.25);
  flex-shrink: 0;
}

.brand__text {
  min-width: 0;
}

.brand__title {
  font-size: 16px;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.brand__subtitle {
  margin-top: 2px;
  font-size: 13px;
  color: var(--muted);
}

.topbar__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
}

.landing {
  padding: 28px 0 48px;
}

.hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  align-items: start;
  margin-bottom: 28px;
}

.hero__title {
  margin: 0;
  font-size: clamp(28px, 4.4vw, 40px);
  line-height: 1.1;
  font-weight: 900;
  letter-spacing: -0.03em;
}

.hero__lead {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.55;
  max-width: 62ch;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.hero__note {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.pill {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
  border-radius: 999px;
  padding: 6px 10px;
  font-size: 13px;
  font-weight: 700;
}

.mini-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 16px;
}

.mini-card__title {
  font-weight: 800;
  margin-bottom: 10px;
}

.mini-card__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}

.mini-kpi {
  border: 1px solid var(--border);
  background: #f8fafc;
  border-radius: 14px;
  padding: 10px 12px;
}

.mini-kpi__label {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.mini-kpi__value {
  margin-top: 2px;
  font-weight: 900;
  font-size: 16px;
}

.mini-kpi--accent {
  background: #eff6ff;
  border-color: #bfdbfe;
}

.mini-card__hint {
  margin-top: 10px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.45;
}

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

.feature {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px;
  box-shadow: 0 6px 18px rgba(15, 23, 42, 0.05);
}

.feature__title {
  font-weight: 900;
  font-size: 16px;
  margin-bottom: 6px;
}

.feature__text {
  color: var(--muted);
  line-height: 1.5;
  font-size: 14px;
}

.footer {
  border-top: 1px solid var(--border);
  background: #fff;
}

.footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 16px 14px 22px;
}

.footer__left {
  color: var(--muted);
  font-size: 14px;
}

@media (min-width: 900px) {
  .hero {
    grid-template-columns: 1.1fr 0.9fr;
  }

  .features {
    grid-template-columns: repeat(3, 1fr);
  }

  .mini-card__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Калькулятор */
.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 20px 14px 40px;
}

.app-header {
  margin-bottom: 18px;
}

.app-title {
  margin: 0;
  font-size: clamp(28px, 4vw, 38px);
  line-height: 1.15;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.app-subtitle {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 15px;
}

.grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px;
}

.card-title {
  margin: 0 0 14px;
  font-size: 20px;
  font-weight: 700;
}

.section-subtitle {
  margin: 0 0 10px;
  font-size: 16px;
  font-weight: 700;
}

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

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.field label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

.field input[type="text"],
.field input[type="tel"] {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px 14px;
  font-size: 16px;
  color: var(--text);
  background: #fff;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}

.field input:focus {
  border-color: rgba(37, 99, 235, 0.65);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
}

.readonly-box {
  min-height: 48px;
  border: 1px dashed var(--border);
  border-radius: 14px;
  padding: 12px 14px;
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  background: #fafafa;
}

.hint-box {
  margin-bottom: 14px;
  padding: 12px 14px;
  border-radius: 14px;
  background: #f8fafc;
  border: 1px solid var(--border);
  font-size: 14px;
  color: var(--muted);
}

.dynamic-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 14px;
}

.dynamic-item {
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 12px;
  background: #fafcff;
  transition: border-color 0.2s, background 0.2s, box-shadow 0.2s, opacity 0.2s;
}

.dynamic-item.critical {
  background: var(--critical-bg);
  border-color: var(--critical-border);
  box-shadow: 0 0 0 1px rgba(220, 38, 38, 0.06);
}

.dynamic-item.paid {
  background: var(--paid-bg);
  border-color: var(--paid-border);
}

.dynamic-item.paid .field input {
  background: #f7fff9;
  color: #4b5563;
}

.dynamic-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  align-items: end;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.block-gap {
  margin-top: 18px;
}

button {
  border: none;
  border-radius: 14px;
  min-height: 46px;
  padding: 12px 16px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.05s ease, background 0.2s ease, opacity 0.2s ease;
}

button:active {
  transform: translateY(1px);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn-lg {
  min-height: 52px;
  padding: 14px 20px;
  font-size: 16px;
  border-radius: 16px;
}

.btn-ghost {
  background: #fff;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  background: #f8fafc;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-hover);
}

.btn-secondary {
  background: #eef2ff;
  color: #1e3a8a;
}

.btn-secondary:hover {
  background: #e0e7ff;
}

.btn-danger {
  background: var(--danger);
  color: #fff;
  width: 100%;
}

.btn-danger:hover {
  background: var(--danger-hover);
}

.btn-paid {
  background: var(--success);
  color: #fff;
  width: 100%;
}

.btn-paid:hover {
  background: var(--success-hover);
}

.btn-paid.is-paid {
  background: #dcfce7;
  color: var(--paid-text);
  border: 1px solid #86efac;
}

.summary-list {
  display: grid;
  gap: 10px;
}

.summary-item {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #fbfbfc;
}

.summary-item strong {
  font-size: 16px;
}

.summary-item span:last-child {
  font-size: 17px;
  font-weight: 800;
  text-align: right;
}

.summary-item.highlight {
  background: #eff6ff;
  border-color: #bfdbfe;
}

.status-box {
  margin-top: 14px;
  border-radius: 16px;
  padding: 16px;
  border: 1px solid transparent;
  font-weight: 800;
  font-size: 16px;
}

.status-success {
  background: var(--success-bg);
  color: var(--success-text);
  border-color: var(--success-border);
}

.status-warning {
  background: var(--critical-bg);
  color: var(--critical-text);
  border-color: var(--critical-border);
}

.footer-actions {
  margin-top: 16px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.muted {
  color: var(--muted);
  font-size: 14px;
}

.payment-status {
  margin-top: 8px;
  font-size: 13px;
  font-weight: 700;
  padding: 8px 10px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.payment-status.normal {
  background: var(--neutral-bg);
  color: var(--neutral-text);
}

.payment-status.critical {
  background: var(--critical-bg);
  color: var(--critical-text);
}

.payment-status.paid {
  background: #dcfce7;
  color: var(--paid-text);
}

@media (min-width: 720px) {
  .fields-grid.two-cols {
    grid-template-columns: 1fr 1fr;
  }

  .dynamic-grid.required-grid {
    grid-template-columns: 1.5fr 1fr 160px 150px 140px;
  }

  .dynamic-grid.additional-grid {
    grid-template-columns: 1.4fr 1fr 140px;
  }

  .btn-danger,
  .btn-paid {
    width: auto;
  }
}