/* ─── Nudge site — design system ─────────────────────────────────────
 *
 * Self-contained CSS for the marketing + auth site.  No framework,
 * no external dependencies (besides Google Fonts for Inter).
 * Brand-matched to the desktop app: teal/amber accents, dark theme,
 * Inter font, soft gradients, accent-tinted borders.
 *
 * Sections:
 *   1. Reset + base
 *   2. Design tokens (colors, type, spacing)
 *   3. Layout primitives (container, nav, footer)
 *   4. Components (button, card, input, etc.)
 *   5. Page-specific scoped rules
 *   6. Utility classes
 * ──────────────────────────────────────────────────────────────────── */

/* ── 1. Reset + base ────────────────────────────────────────────── */

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  background: #10131a;
  color: #F5F7FA;
  font-size: 15px;
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img { max-width: 100%; height: auto; display: block; }
a { color: #6cebeb; text-decoration: none; transition: color 140ms ease; }
a:hover { color: #aef5f5; }
h1, h2, h3, h4, h5, h6 { margin: 0 0 0.5em; line-height: 1.25; letter-spacing: -0.01em; }
h1 { font-size: 42px; font-weight: 700; letter-spacing: -0.02em; }
h2 { font-size: 30px; font-weight: 700; }
h3 { font-size: 22px; font-weight: 600; }
p { margin: 0 0 1em; color: #c7cdd9; }
code, pre {
  font-family: 'JetBrains Mono', 'Consolas', 'Courier New', monospace;
  font-size: 0.9em;
}

/* ── 2. Design tokens (as CSS custom properties) ───────────────── */

:root {
  /* Surface */
  --bg-0: #0a0c10;
  --bg-1: #10131a;
  --bg-2: #181c25;
  --bg-3: #1f2330;
  --card-grad-top:    #2c3243;
  --card-grad-mid:    #232838;
  --card-grad-low:    #181c25;
  --card-grad-bottom: #10131a;

  /* Borders */
  --border-faint:    rgba(255, 255, 255, 0.08);
  --border-soft:     rgba(120, 220, 220, 0.22);
  --border-glow-top: rgba(255, 255, 255, 0.30);

  /* Text */
  --text-0: #ffffff;
  --text-1: #F5F7FA;
  --text-2: #c7cdd9;
  --text-3: #9ba3b4;
  --text-muted: #6c7484;

  /* Accent palette (matches the desktop app) */
  --accent:         #18C8C8;
  --accent-hover:   #2ed8d8;
  --accent-pressed: #13a3a3;
  --accent-text:    #6cebeb;
  --accent-soft:    rgba(24, 200, 200, 0.15);

  --amber:        #F2C230;
  --amber-text:   #f5d775;
  --amber-soft:   rgba(242, 194, 48, 0.18);

  --success: #3ddc97;
  --danger:  #e3525f;

  /* Spacing scale */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;

  /* Radii */
  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 14px;
  --r-xl: 18px;

  /* Shadows */
  --shadow-card: 0 12px 32px rgba(0, 0, 0, 0.4);
  --shadow-lifted: 0 24px 60px rgba(0, 0, 0, 0.55);
}

/* ── 3. Layout primitives ──────────────────────────────────────── */

.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 var(--space-5);
}

.container-narrow {
  width: 100%;
  max-width: 560px;
  margin: 0 auto;
  padding: 0 var(--space-5);
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  max-width: 1100px;
  margin: 0 auto;
}

.site-nav .logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 700;
  font-size: 18px;
  color: var(--text-0);
}

.site-nav .logo img { width: 28px; height: 28px; }

.site-nav .nav-links {
  display: flex;
  gap: var(--space-5);
  align-items: center;
}

.site-nav .nav-links a {
  color: var(--text-2);
  font-weight: 500;
  font-size: 14px;
}
.site-nav .nav-links a:hover { color: var(--text-0); }

.site-footer {
  border-top: 1px solid var(--border-faint);
  padding: var(--space-7) var(--space-5);
  margin-top: var(--space-9);
  text-align: center;
  color: var(--text-3);
  font-size: 13px;
}
.site-footer .footer-links {
  display: flex;
  gap: var(--space-5);
  justify-content: center;
  margin-bottom: var(--space-3);
  flex-wrap: wrap;
}
.site-footer .footer-links a { color: var(--text-3); }
.site-footer .footer-links a:hover { color: var(--text-1); }

/* ── 4. Components ─────────────────────────────────────────────── */

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  border: none;
  border-radius: var(--r-md);
  padding: 12px 24px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.1px;
  cursor: pointer;
  transition: background 140ms ease, transform 80ms ease, box-shadow 140ms ease;
  text-decoration: none;
  min-height: 44px;
}
.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--accent);
  color: var(--bg-0);
}
.btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
  color: var(--bg-0);
}
.btn-primary:active:not(:disabled) {
  background: var(--accent-pressed);
  transform: translateY(1px);
}

.btn-secondary {
  background: transparent;
  color: var(--text-1);
  border: 1px solid var(--bg-3);
}
.btn-secondary:hover:not(:disabled) {
  background: var(--bg-3);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-amber {
  background: var(--amber-soft);
  color: var(--amber-text);
  border: 1px solid rgba(242, 194, 48, 0.4);
}
.btn-amber:hover:not(:disabled) {
  background: rgba(242, 194, 48, 0.30);
  color: #fce6a8;
}

.btn-lg {
  padding: 14px 28px;
  font-size: 15px;
  min-height: 52px;
}

.btn-block {
  width: 100%;
}

/* --- Cards --- */
.card {
  background: linear-gradient(180deg,
    var(--card-grad-top) 0%,
    var(--card-grad-mid) 8%,
    var(--card-grad-low) 50%,
    var(--card-grad-bottom) 100%);
  border: 1px solid var(--border-soft);
  border-top: 1px solid var(--border-glow-top);
  border-radius: var(--r-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-card);
}

.card-flat {
  background: var(--bg-2);
  border: 1px solid var(--border-faint);
  border-radius: var(--r-lg);
  padding: var(--space-5);
}

/* --- Form inputs --- */
.form-field {
  margin-bottom: var(--space-4);
}
.form-field label {
  display: block;
  color: var(--text-3);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  margin-bottom: var(--space-2);
}
.input {
  width: 100%;
  background: var(--bg-0);
  border: 1px solid var(--bg-3);
  border-radius: var(--r-md);
  color: var(--text-1);
  padding: 11px 14px;
  font-family: inherit;
  font-size: 14px;
  transition: border-color 140ms ease;
}
.input:focus {
  outline: none;
  border-color: var(--accent);
}
.input::placeholder { color: var(--text-muted); }

/* --- Status messages --- */
.status {
  margin: var(--space-3) 0;
  padding: var(--space-3) 0;
  font-size: 13px;
  min-height: 24px;
  color: var(--text-3);
}
.status.error  { color: var(--danger); }
.status.success { color: var(--success); }
.status.amber  { color: var(--amber-text); }

/* --- Token display box (for /billing-success) --- */
.token-box {
  background: var(--bg-0);
  border: 1px solid var(--bg-3);
  border-radius: var(--r-md);
  padding: var(--space-4);
  font-family: 'JetBrains Mono', 'Consolas', monospace;
  font-size: 13px;
  word-break: break-all;
  color: var(--accent-text);
  margin-bottom: var(--space-3);
}

/* --- Pills / badges --- */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.4px;
  text-transform: uppercase;
}
.pill-accent { background: var(--accent-soft); color: var(--accent-text); border: 1px solid rgba(24, 200, 200, 0.35); }
.pill-amber  { background: var(--amber-soft); color: var(--amber-text); border: 1px solid rgba(242, 194, 48, 0.40); }
.pill-success { background: rgba(61, 220, 151, 0.18); color: var(--success); border: 1px solid rgba(61, 220, 151, 0.40); }

/* ── 5. Page-specific ──────────────────────────────────────────── */

/* --- Hero --- */
.hero {
  padding: var(--space-9) var(--space-5) var(--space-8);
  text-align: center;
}
.hero h1 {
  font-size: 56px;
  margin-bottom: var(--space-4);
  background: linear-gradient(135deg, #ffffff 0%, #aef5f5 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero .lede {
  font-size: 18px;
  color: var(--text-2);
  max-width: 640px;
  margin: 0 auto var(--space-6);
  line-height: 1.55;
}
.hero .hero-cta {
  display: flex;
  gap: var(--space-3);
  justify-content: center;
  flex-wrap: wrap;
}
.hero .hero-sub {
  margin-top: var(--space-4);
  font-size: 13px;
  color: var(--text-3);
}

/* --- Features grid --- */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-5);
  margin: var(--space-8) 0;
}
.feature {
  padding: var(--space-5);
}
.feature .feature-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--r-md);
  background: var(--accent-soft);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: var(--space-3);
  color: var(--accent-text);
}
.feature h3 {
  font-size: 17px;
  color: var(--text-1);
  margin-bottom: var(--space-2);
}
.feature p {
  font-size: 14px;
  color: var(--text-3);
  margin: 0;
}

/* --- Pricing --- */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-5);
  max-width: 880px;
  margin: var(--space-6) auto 0;
}
.price-card {
  text-align: center;
}
.price-card .price-name { font-size: 15px; color: var(--text-3); margin-bottom: var(--space-2); }
.price-card .price-amount {
  font-size: 48px;
  font-weight: 800;
  color: var(--text-0);
  margin-bottom: var(--space-2);
  letter-spacing: -0.02em;
}
.price-card .price-period { color: var(--text-3); font-size: 14px; margin-bottom: var(--space-5); }
.price-card ul {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-5);
  text-align: left;
}
.price-card li {
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--border-faint);
  font-size: 14px;
  color: var(--text-2);
}
.price-card li::before {
  content: "✓";
  color: var(--accent);
  margin-right: var(--space-2);
  font-weight: 700;
}

/* --- Auth form layout --- */
.auth-shell {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-8) var(--space-5);
  min-height: 80vh;
}
.auth-card {
  width: 100%;
  max-width: 440px;
}
.auth-card h1 {
  font-size: 26px;
  margin-bottom: var(--space-2);
}
.auth-card .auth-sub {
  color: var(--text-3);
  font-size: 14px;
  margin-bottom: var(--space-5);
}
.auth-card .auth-divider {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin: var(--space-4) 0;
  color: var(--text-muted);
  font-size: 12px;
}
.auth-card .auth-divider::before,
.auth-card .auth-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border-faint);
}
.auth-card .auth-foot {
  margin-top: var(--space-5);
  text-align: center;
  font-size: 13px;
  color: var(--text-3);
}

/* --- Account dashboard --- */
.account-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin-top: var(--space-5);
}
.account-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--border-faint);
}
.account-row:last-child { border-bottom: none; }
.account-row .label {
  font-size: 12px;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.4px;
  font-weight: 600;
}
.account-row .value {
  color: var(--text-1);
  font-size: 14px;
}

/* --- Legal pages --- */
.legal {
  max-width: 760px;
  margin: 0 auto;
  padding: var(--space-7) var(--space-5);
}
.legal h1 { font-size: 32px; margin-bottom: var(--space-2); }
.legal .updated { color: var(--text-3); font-size: 13px; margin-bottom: var(--space-6); }
.legal h2 { font-size: 20px; margin-top: var(--space-6); }
.legal p, .legal li { color: var(--text-2); font-size: 14px; line-height: 1.7; }
.legal ul { padding-left: var(--space-5); }

/* ── 6. Utilities ──────────────────────────────────────────────── */

.text-center { text-align: center; }
.text-muted  { color: var(--text-3); }
.text-small  { font-size: 13px; }
.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.mt-5 { margin-top: var(--space-5); }
.mt-6 { margin-top: var(--space-6); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }
.hidden { display: none !important; }
.flex-row {
  display: flex; gap: var(--space-3); align-items: center;
}
.flex-row.wrap { flex-wrap: wrap; }
.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid var(--bg-3);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 700ms linear infinite;
  vertical-align: middle;
  margin-right: var(--space-2);
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Responsive ────────────────────────────────────────────────── */
@media (max-width: 640px) {
  h1 { font-size: 32px; }
  .hero h1 { font-size: 38px; }
  .hero { padding-top: var(--space-7); }
  .price-card .price-amount { font-size: 38px; }
  .site-nav { flex-wrap: wrap; gap: var(--space-3); }
  .site-nav .nav-links { gap: var(--space-3); }
}