:root {
  --bg: #f6f8fb;
  --surface: #ffffff;
  --ink: #0f172a;
  --muted: #64748b;
  --line: #e2e8f0;
  --brand: #0f766e;
  --brand-strong: #0b5f59;
  --accent: #10b981;
  --accent-ink: #ffffff;
  --danger: #dc2626;
  --danger-bg: #fef2f2;
  --warn: #b45309;
  --warn-bg: #fffbeb;
  --ok: #15803d;
  --ok-bg: #f0fdf4;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
  --font: "Segoe UI", system-ui, -apple-system, Roboto, Helvetica, Arial,
    sans-serif;
  --mono: "Cascadia Code", "SFMono-Regular", Consolas, monospace;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--brand);
  text-decoration: none;
}

.container {
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Navbar */
.nav {
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 50;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--ink);
}

.brand .logo {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--brand), var(--accent));
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
}

.nav-links a {
  color: var(--muted);
  font-weight: 600;
  font-size: 0.95rem;
}

.nav-links a:hover {
  color: var(--ink);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: 10px;
  border: 1px solid transparent;
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  transition: transform 0.05s ease, background 0.15s ease, box-shadow 0.15s ease;
  text-decoration: none;
}

.btn:active {
  transform: translateY(1px);
}

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

.btn-primary:hover {
  background: #0ea371;
}

.btn-dark {
  background: var(--ink);
  color: #fff;
}

.btn-dark:hover {
  background: #1e293b;
}

.btn-outline {
  background: transparent;
  border-color: var(--line);
  color: var(--ink);
}

.btn-outline:hover {
  border-color: var(--brand);
  color: var(--brand);
}

.btn-block {
  width: 100%;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Hero */
.hero {
  padding: 72px 0 56px;
  text-align: center;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  line-height: 1.15;
  margin: 0 auto 18px;
  max-width: 820px;
  letter-spacing: -0.02em;
}

.hero p.lead {
  font-size: 1.15rem;
  color: var(--muted);
  max-width: 640px;
  margin: 0 auto 28px;
}

.hero .actions {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Sections */
.section {
  padding: 56px 0;
}

.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 40px;
}

.section-head h2 {
  font-size: 1.8rem;
  letter-spacing: -0.01em;
  margin: 0 0 10px;
}

.section-head p {
  color: var(--muted);
  margin: 0;
}

/* Feature grid */
.grid {
  display: grid;
  gap: 20px;
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

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

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

.feature h3 {
  margin: 0 0 8px;
  font-size: 1.05rem;
}

.feature p {
  color: var(--muted);
  margin: 0;
  font-size: 0.95rem;
}

.icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: #ecfdf5;
  color: var(--brand);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  margin-bottom: 14px;
}

/* Steps */
.step {
  position: relative;
  padding-left: 56px;
}

.step .num {
  position: absolute;
  left: 0;
  top: 0;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--ink);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
}

.step h3 {
  margin: 0 0 6px;
}

.step p {
  color: var(--muted);
  margin: 0;
}

/* Pricing */
.pricing {
  max-width: 460px;
  margin: 0 auto;
  text-align: center;
}

.pricing .price {
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 8px 0 2px;
}

.pricing .period {
  color: var(--muted);
}

.pricing ul {
  list-style: none;
  padding: 0;
  margin: 24px 0;
  text-align: left;
}

.pricing li {
  padding: 8px 0 8px 28px;
  position: relative;
  color: #334155;
}

.pricing li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 800;
}

/* Pricing grid */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 20px;
  max-width: 1100px;
  margin: 0 auto;
  align-items: stretch;
}

.plan-card {
  text-align: center;
  display: flex;
  flex-direction: column;
}

.plan-card h3 {
  margin: 0 0 4px;
  font-size: 1.25rem;
}

.plan-card .price {
  font-size: 2.4rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 8px 0 2px;
}

.plan-card .period {
  color: var(--muted);
  margin-bottom: 12px;
}

.plan-card ul {
  list-style: none;
  padding: 0;
  margin: 0 0 20px;
  text-align: left;
  flex: 1;
}

.plan-card li {
  padding: 8px 0 8px 28px;
  position: relative;
  color: #334155;
}

.plan-card li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 800;
}

.plan-card.featured {
  border-color: var(--accent);
  box-shadow: 0 10px 30px rgba(15, 118, 110, 0.12);
}

.plan-card .btn-block {
  margin-top: auto;
}

/* FAQ */
.faq-item {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  padding: 18px 20px;
}

.faq-item h3 {
  margin: 0 0 6px;
  font-size: 1rem;
}

.faq-item p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

/* Forms */
.form-card {
  max-width: 520px;
  margin: 0 auto;
}

.field {
  margin-bottom: 18px;
}

.field label {
  display: block;
  font-weight: 600;
  margin-bottom: 6px;
  font-size: 0.92rem;
}

.field input {
  width: 100%;
  padding: 11px 13px;
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: 1rem;
  font-family: inherit;
  background: #fff;
}

.field input:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.12);
}

textarea {
  width: 100%;
  padding: 11px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  font: inherit;
  resize: vertical;
}

.field select {
  width: 100%;
  padding: 11px 36px 11px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background-color: #fff;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%2364748b' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  color: var(--ink);
  font: inherit;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  cursor: pointer;
}

.field select:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.12);
}

.field select::-ms-expand {
  display: none;
}

.field .hint {
  font-size: 0.82rem;
  color: var(--muted);
  margin-top: 4px;
}

/* Alerts */
.alert {
  border-radius: 10px;
  padding: 13px 15px;
  font-size: 0.95rem;
  margin: 16px 0;
  display: none;
}

.alert.show {
  display: block;
}

.alert-error {
  background: var(--danger-bg);
  color: var(--danger);
  border: 1px solid #fecaca;
}

.alert-info {
  background: #eff6ff;
  color: #1d4ed8;
  border: 1px solid #bfdbfe;
}

.alert-ok {
  background: var(--ok-bg);
  color: var(--ok);
  border: 1px solid #bbf7d0;
}

/* License key */
.license-box {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--ink);
  color: #e2e8f0;
  border-radius: 12px;
  padding: 14px 16px;
  font-family: var(--mono);
  font-size: 0.95rem;
  word-break: break-all;
}

.license-box button {
  flex-shrink: 0;
}

.license-box .btn-outline {
  color: #ffffff;
  border-color: #475569;
}

.license-box .btn-outline:hover {
  background: #ffffff;
  color: var(--brand);
  border-color: #ffffff;
}

.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.badge-active {
  background: var(--ok-bg);
  color: var(--ok);
}

.badge-suspended {
  background: var(--warn-bg);
  color: var(--warn);
}

.badge-revoked {
  background: var(--danger-bg);
  color: var(--danger);
}

.badge-paid {
  background: var(--ok-bg);
  color: var(--ok);
}

.badge-pending {
  background: var(--warn-bg);
  color: var(--warn);
}

/* Spinner */
.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--line);
  border-top-color: var(--brand);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
  margin: 0 auto 16px;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* License list */
.license-item {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  padding: 18px;
  margin-bottom: 14px;
}

.license-item .top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}

.license-item .meta {
  color: var(--muted);
  font-size: 0.9rem;
}

/* Footer */
.footer {
  border-top: 1px solid var(--line);
  background: var(--surface);
  padding: 32px 0;
  margin-top: 40px;
  color: var(--muted);
  text-align: center;
  font-size: 0.9rem;
}

.muted {
  color: var(--muted);
}

.center {
  text-align: center;
}

.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 40px; }
.mb-0 { margin-bottom: 0; }

.hidden {
  display: none !important;
}

@media (max-width: 760px) {
  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }

  .nav-links a:not(.btn) {
    display: none;
  }

  .hero {
    padding: 48px 0 40px;
  }
}