@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
  --bg: #fafafa;
  --ink: #111;
  --ink-2: #444;
  --ink-3: #888;
  --panel: #fff;
  --line: #e5e5e5;
  --accent: #111;
  --accent-soft: #f5f5f5;
  --danger: #e11;
  --danger-soft: #fef2f2;
  --good: #16a34a;
  --good-soft: #f0fdf4;
  --radius: 10px;
}

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

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  font-family: 'Inter', -apple-system, system-ui, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  max-width: 1060px;
  margin: 0 auto;
  padding: 0 24px 36px;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 64px;
  border-bottom: 1px solid var(--line);
}

.logo {
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  gap: 4px;
  align-items: center;
}

.nav-links a,
.nav-links button {
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--ink-2);
  transition: background 0.12s, color 0.12s;
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
}

.nav-links a:hover,
.nav-links button:hover {
  background: var(--accent-soft);
  color: var(--ink);
}

.btn,
button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: 8px;
  padding: 10px 18px;
  font-size: 0.85rem;
  font-weight: 600;
  font-family: inherit;
  line-height: 1;
  cursor: pointer;
  transition: opacity 0.12s, transform 0.1s;
}

.btn:hover,
button:hover {
  opacity: 0.85;
}

.btn:active,
button:active {
  transform: scale(0.98);
}

.btn:disabled,
button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

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

.btn-secondary {
  background: var(--panel);
  color: var(--ink);
  border: 1px solid var(--line);
}

.btn-ghost {
  background: none;
  color: var(--ink-3);
  border: none;
}

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

.card h2,
.card h3,
.card h4 {
  margin-top: 0;
}

.form-group {
  margin-bottom: 16px;
}

label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--ink-2);
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 0.88rem;
  font-family: inherit;
  background: var(--panel);
  color: var(--ink);
}

input::placeholder,
textarea::placeholder {
  color: #bbb;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--ink);
}

textarea {
  min-height: 220px;
  resize: vertical;
  line-height: 1.65;
}

.auth-wrap {
  max-width: 400px;
  margin: 80px auto 0;
}

.auth-wrap h2 {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0;
}

.auth-wrap .sub {
  color: var(--ink-3);
  font-size: 0.86rem;
  margin-top: 6px;
  margin-bottom: 22px;
}

.auth-footer {
  text-align: center;
  margin-top: 18px;
  font-size: 0.82rem;
  color: var(--ink-3);
}

.auth-footer a {
  font-weight: 600;
  color: var(--ink);
}

.inline-banner {
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 0.82rem;
  margin-bottom: 14px;
}

.inline-banner.error {
  background: var(--danger-soft);
  color: #b91c1c;
  border: 1px solid #fecaca;
}

.inline-banner.success {
  background: var(--good-soft);
  color: #166534;
  border: 1px solid #bbf7d0;
}

.hidden {
  display: none !important;
}

.hero {
  padding: 72px 0 40px;
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.hero h1 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.08;
  margin: 0 0 14px;
}

.hero p {
  color: var(--ink-3);
  font-size: 0.98rem;
  line-height: 1.6;
  margin: 0 auto 26px;
  max-width: 62ch;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: 26px;
}

.stat-tile {
  background: var(--panel);
  padding: 18px;
  text-align: left;
}

.stat-tile strong {
  display: block;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
}

.stat-tile span {
  font-size: 0.78rem;
  color: var(--ink-3);
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: 24px;
}

.step {
  background: var(--panel);
  padding: 18px;
}

.step strong {
  display: block;
  font-size: 0.8rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--ink-2);
}

.step span {
  display: block;
  margin-top: 6px;
  font-size: 0.83rem;
  color: var(--ink-3);
  line-height: 1.45;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: 16px;
}

.feature {
  background: var(--panel);
  padding: 20px;
}

.feature h3 {
  margin: 0 0 8px;
  font-size: 0.9rem;
  font-weight: 600;
}

.feature p {
  margin: 0;
  font-size: 0.84rem;
  color: var(--ink-3);
  line-height: 1.5;
}

.page-header {
  text-align: center;
  padding: 50px 0 10px;
}

.page-header h1 {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin: 0;
}

.page-header p {
  color: var(--ink-3);
  font-size: 0.9rem;
  margin-top: 8px;
}

.plan-table {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: 30px;
}

.plan-card {
  background: var(--panel);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.plan-card.featured {
  background: var(--accent-soft);
}

.plan-card h3 {
  margin: 0;
  font-size: 0.86rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-2);
}

.plan-price {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
}

.plan-price span {
  font-size: 0.84rem;
  font-weight: 500;
  color: var(--ink-3);
}

.plan-features {
  list-style: none;
  margin: 4px 0;
  padding: 0;
  flex: 1;
}

.plan-features li {
  font-size: 0.85rem;
  color: var(--ink-2);
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}

.plan-features li:last-child {
  border-bottom: none;
}

.account-strip {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.account-meta {
  display: grid;
  gap: 2px;
}

.account-meta strong {
  font-size: 0.95rem;
}

.account-meta span {
  font-size: 0.82rem;
  color: var(--ink-3);
}

.usage-pills {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.pill {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--ink-2);
  background: var(--panel);
}

.billing-box {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px 14px;
  margin-top: 14px;
  background: var(--panel);
}

.billing-box .row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
}

.dashboard-layout {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 16px;
  margin-top: 16px;
}

.score {
  display: flex;
  align-items: center;
  gap: 14px;
}

.score-circle {
  width: 96px;
  height: 96px;
  border-radius: 999px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  border: 1px solid var(--line);
  background: var(--panel);
  flex-shrink: 0;
}

.score-circle span:first-child {
  font-size: 1.38rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.score-circle span:last-child {
  font-size: 0.64rem;
  color: var(--ink-3);
  font-weight: 600;
}

.score-high {
  border-color: #fecaca;
  background: #fff1f2;
  color: #b91c1c;
}

.score-mid {
  border-color: #fde68a;
  background: #fffbeb;
  color: #a16207;
}

.score-low {
  border-color: #bbf7d0;
  background: #f0fdf4;
  color: #15803d;
}

.result-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  flex-wrap: wrap;
}

.result-columns {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-top: 18px;
}

.list-block {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  background: var(--panel);
}

.list-block h4 {
  margin: 0 0 8px;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ink-2);
}

.list-block ul {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 6px;
  color: var(--ink-2);
  font-size: 0.84rem;
  line-height: 1.45;
}

.history-list {
  display: grid;
  gap: 8px;
}

.history-item {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px;
  background: var(--panel);
}

.history-head {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  align-items: flex-start;
}

.history-head strong {
  font-size: 0.84rem;
}

.history-tag {
  display: inline-block;
  margin-top: 6px;
  margin-right: 4px;
  padding: 2px 8px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.7rem;
  color: var(--ink-2);
  font-weight: 600;
}

.footer {
  padding: 40px 0;
  border-top: 1px solid var(--line);
  color: var(--ink-3);
  font-size: 0.78rem;
  margin-top: 40px;
  text-align: center;
}

.footer p {
  margin: 0;
}

.muted {
  color: var(--ink-3);
}

@media (max-width: 768px) {
  .hero {
    padding: 44px 0 32px;
  }

  .hero h1 {
    font-size: 1.8rem;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-stats,
  .steps,
  .feature-grid,
  .plan-table,
  .dashboard-layout,
  .result-columns {
    grid-template-columns: 1fr;
  }

  .navbar {
    height: auto;
    padding: 12px 0;
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }

  .card,
  .plan-card {
    padding: 18px;
  }

  .container {
    padding: 0 16px 30px;
  }
}