:root {
  --bg: #f3fcf6;
  --surface: #ffffff;
  --accent: #16a34a;
  --accent-soft: #bbf7d0;
  --accent-strong: #15803d;
  --text: #14291d;
  --muted: #5c6d63;
  --border: #d8ebdf;
  --danger: #b91c1c;
  --shadow: 0 10px 30px rgba(22, 163, 74, 0.08);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

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

.topbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-weight: 700;
  font-size: 20px;
  color: var(--accent-strong);
  letter-spacing: 0.5px;
}

.logo-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  background: var(--accent);
  border-radius: 50%;
  margin-right: 8px;
  vertical-align: middle;
}

.topnav {
  font-size: 14px;
  color: var(--muted);
}
.topnav a { color: var(--muted); text-decoration: none; margin-left: 18px; }
.topnav a:hover { color: var(--accent-strong); }

.content {
  flex: 1;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 48px 20px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
  padding: 36px 36px 32px;
  width: 100%;
  max-width: 520px;
}

.card h1 {
  font-size: 26px;
  margin: 0 0 8px;
  color: var(--text);
}

.card .subtitle {
  color: var(--muted);
  margin: 0 0 24px;
  font-size: 15px;
}

.field { margin-bottom: 16px; }

.field label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

.field input[type="text"],
.field input[type="tel"],
.field input[type="email"],
.field select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fbfefc;
  font-size: 15px;
  color: var(--text);
  transition: border-color 0.15s, background 0.15s;
}

.field input:focus,
.field select:focus {
  outline: none;
  border-color: var(--accent);
  background: #fff;
}

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

.checkbox {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 13px;
  color: var(--muted);
  margin: 18px 0;
}
.checkbox input {
  margin-top: 2px;
  accent-color: var(--accent);
  width: 16px;
  height: 16px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 14px 20px;
  background: var(--accent);
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  border: 0;
  border-radius: 10px;
  cursor: pointer;
  transition: background 0.15s, transform 0.05s;
}
.btn:hover { background: var(--accent-strong); }
.btn:active { transform: translateY(1px); }

.prefilled-badge {
  display: inline-block;
  font-size: 11px;
  padding: 2px 8px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  border-radius: 999px;
  margin-left: 6px;
  font-weight: 600;
  letter-spacing: 0.3px;
  vertical-align: middle;
}

.tabs {
  display: flex;
  gap: 6px;
  background: #ecf7f1;
  padding: 4px;
  border-radius: 10px;
  margin-bottom: 24px;
}
.tabs a {
  flex: 1;
  text-align: center;
  padding: 10px 12px;
  border-radius: 8px;
  text-decoration: none;
  color: var(--muted);
  font-size: 14px;
  font-weight: 500;
}
.tabs a.active {
  background: var(--surface);
  color: var(--accent-strong);
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.footer {
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  padding: 24px;
  border-top: 1px solid var(--border);
  background: var(--surface);
}

.thanks {
  text-align: center;
  padding: 20px 0 8px;
}
.thanks-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: var(--accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-strong);
  font-size: 36px;
}

.error {
  background: #fef2f2;
  color: var(--danger);
  border: 1px solid #fecaca;
  border-radius: 10px;
  padding: 12px 14px;
  margin-bottom: 18px;
  font-size: 14px;
}

.tariff-card {
  background: linear-gradient(135deg, #ecfdf5 0%, #f0fdf4 100%);
  border: 1px solid var(--accent-soft);
  border-radius: 12px;
  padding: 16px 18px;
  margin-bottom: 20px;
}

.tariff-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.tariff-name {
  font-size: 18px;
  font-weight: 700;
  color: var(--accent-strong);
}

.tariff-cost {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  background: var(--surface);
  padding: 4px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
}

.tariff-details {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tariff-tag {
  font-size: 13px;
  color: var(--muted);
  background: var(--surface);
  padding: 4px 10px;
  border-radius: 6px;
  border: 1px solid var(--border);
}

@media (max-width: 520px) {
  .card { padding: 24px 20px; }
  .field-row { grid-template-columns: 1fr; }
  .topbar { padding: 14px 16px; }
  .content { padding: 24px 12px; }
}