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

/* ==========================================================================
   Nocturne design tokens — website ground (light/white, purple accent)
   ========================================================================== */
:root {
  --color-bg: #ffffff;
  --color-surface: #f5f5f7;
  --color-text: #0d0e10;
  --color-accent: #796cbf;
  --color-divider: color-mix(in srgb, #0d0e10 10%, transparent);

  --color-neutral-100: #1c1d21;
  --color-neutral-200: #34363c;
  --color-neutral-300: #4d5058;
  --color-neutral-400: #6a6d78;
  --color-neutral-500: #898d99;
  --color-neutral-600: #aaadb9;
  --color-neutral-700: #c9ccd6;
  --color-neutral-800: #e4e6ec;
  --color-neutral-900: #f3f4f7;

  --color-accent-100: #2b2741;
  --color-accent-200: #423a6a;
  --color-accent-300: #5d5294;
  --color-accent-400: #796cbf;
  --color-accent-500: #968ae0;
  --color-accent-600: #b5abfc;
  --color-accent-700: #d2cefd;
  --color-accent-800: #e7e5fe;
  --color-accent-900: #f5f4ff;

  --font-heading: "Inter", system-ui, sans-serif;
  --font-heading-weight: 600;
  --font-body: "Inter", system-ui, sans-serif;

  --space-1: 2.8px;
  --space-2: 5.6px;
  --space-3: 8.4px;
  --space-4: 11.2px;
  --space-6: 16.8px;
  --space-8: 22.4px;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 14px;

  --shadow-sm: 0 0 0 1px var(--color-neutral-800);
  --shadow-md: 0 0 0 1px var(--color-neutral-700), 0 6px 18px rgba(13,14,16,0.08);
  --shadow-lg: 0 4px 12px rgba(13,14,16,0.14);
}

/* ==========================================================================
   Base
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.55;
  overflow-x: hidden;
}
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: var(--font-heading-weight);
  line-height: 1.12;
  letter-spacing: -0.015em;
  margin: 0;
}
p { margin: 0; }
a { color: var(--color-accent-300); text-decoration: none; text-underline-offset: 3px; }
a:hover { color: var(--color-accent); }
img { display: block; max-width: 100%; }
:focus { outline: none; }
:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }
::selection { background: color-mix(in srgb, var(--color-accent) 30%, transparent); }

.oh-h1 { font-weight: 600; letter-spacing: -0.03em; line-height: 1.03; }
.oh-h2 { font-weight: 600; letter-spacing: -0.02em; line-height: 1.1; }

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  cursor: pointer; text-decoration: none;
  font-family: var(--font-heading); font-weight: var(--font-heading-weight);
  font-size: 14px; line-height: 1.2; color: var(--color-text);
  background: transparent; border: 1px solid transparent;
  padding: var(--space-2) calc(var(--space-3) * 1.2);
  border-radius: var(--radius-md);
  transition: background-color 0.15s ease;
}
.btn-primary { color: var(--color-accent); border-color: var(--color-accent); }
.btn-primary:hover { background: color-mix(in srgb, var(--color-accent) 12%, transparent); color: var(--color-accent); }
.btn-primary:active { background: color-mix(in srgb, var(--color-accent) 22%, transparent); }
.btn-secondary { border-color: var(--color-divider); color: var(--color-text); }
.btn-secondary:hover { background: color-mix(in srgb, var(--color-text) 6%, transparent); color: var(--color-text); }
.btn-secondary:active { background: color-mix(in srgb, var(--color-text) 12%, transparent); }

/* ==========================================================================
   Cards, tags
   ========================================================================== */
.card {
  display: flex; flex-direction: column; gap: var(--space-2);
  padding: var(--space-4); border-radius: var(--radius-md); background: var(--color-surface);
}
.card-kicker { font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--color-accent); }
.card-title { font-family: var(--font-heading); font-weight: var(--font-heading-weight); font-size: 17px; line-height: 1.2; }
.card-body { margin: 0; font-size: 13px; opacity: 0.72; flex: 1; }
.elev-sm { box-shadow: var(--shadow-sm); }
.elev-md { box-shadow: var(--shadow-md); }
.elev-lg { box-shadow: var(--shadow-lg); }

.tag {
  display: inline-flex; align-items: center; font-size: 11px;
  letter-spacing: 0.02em; padding: 3px 10px;
  border-radius: calc(var(--radius-md) * 0.75);
}
.tag-accent { background: var(--color-accent-800); color: var(--color-accent-300); }
.tag-outline { border: 1px solid var(--color-accent); color: var(--color-accent); }

/* ==========================================================================
   Layout — nav
   ========================================================================== */
.site-nav {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px clamp(20px, 5vw, 64px);
  background: color-mix(in srgb, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-divider);
}
.site-nav .brand img { height: 56px; width: 56px; object-fit: contain; }
.site-nav .links { display: flex; align-items: center; gap: clamp(14px, 3vw, 32px); }
.site-nav .links a.nav-link { font-size: 14px; color: var(--color-neutral-300); white-space: nowrap; }
.site-nav .links a.nav-link:hover { color: var(--color-text); }
.nav-toggle { display: none; }

/* ==========================================================================
   Sections
   ========================================================================== */
.section { padding: clamp(56px, 8vw, 96px) clamp(20px, 5vw, 64px); }
.section-wrap { max-width: 1100px; margin: 0 auto; }

.hero {
  padding: clamp(72px, 11vw, 140px) clamp(20px, 5vw, 64px) clamp(56px, 8vw, 96px);
  max-width: 1100px; margin: 0 auto; text-align: center;
  display: flex; flex-direction: column; align-items: center; gap: var(--space-6);
}
.hero h1 { font-size: clamp(38px, 6.4vw, 76px); max-width: 920px; }
.hero .sub { font-size: clamp(16px, 1.6vw, 19px); color: var(--color-neutral-300); max-width: 600px; }
.hero .ctas { display: flex; gap: var(--space-3); flex-wrap: wrap; justify-content: center; }
.hero .ctas .btn { padding: 14px 28px; font-size: 16px; }
.hero .fine-print { font-size: 13px; color: var(--color-neutral-500); }

.section-heading { text-align: center; margin: 0 0 var(--space-6); }
.section-heading h2 { font-size: clamp(26px, 3.2vw, 38px); }
.section-heading p { font-size: 15px; color: var(--color-neutral-400); max-width: 540px; margin: var(--space-2) auto 0; }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-4); }

.personas {
  display: flex; flex-direction: column; gap: var(--space-6);
}
.personas .heading { text-align: center; display: flex; flex-direction: column; gap: var(--space-2); align-items: center; }
.persona-row { display: flex; gap: var(--space-4); justify-content: center; flex-wrap: wrap; }
.persona {
  display: flex; flex-direction: column; align-items: center; gap: 8px; width: 104px;
}
.persona .avatar {
  width: 64px; height: 64px; border-radius: 50%;
  background: var(--color-accent-800); color: var(--color-accent-300);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-heading); font-weight: 600; font-size: 18px;
}
.persona .name { font-size: 13px; font-weight: 500; text-align: center; }
.persona .role { font-size: 11px; color: var(--color-neutral-400); text-align: center; }

.feedback-sample {
  max-width: 900px; margin: 0 auto; text-align: center;
  display: flex; flex-direction: column; align-items: center; gap: var(--space-4);
}
.feedback-sample h2 { font-size: clamp(26px, 3.4vw, 40px); }
.feedback-sample p.sub { font-size: 15px; color: var(--color-neutral-400); max-width: 540px; }
.feedback-sample .card { max-width: 520px; text-align: left; gap: var(--space-2); }
.feedback-sample .card-body { font-size: 14px; }

.pricing-heading { font-size: clamp(26px, 3.2vw, 38px); text-align: center; margin: 0 0 var(--space-6); }
.pricing-card-featured { border: 1px solid var(--color-neutral-100); }
.pricing-cta { text-align: center; margin-top: var(--space-6); }
.pricing-cta .btn { padding: 13px 26px; font-size: 18px; }

.closing-cta {
  padding: clamp(72px, 10vw, 120px) clamp(20px, 5vw, 64px);
  text-align: center; display: flex; flex-direction: column; align-items: center; gap: var(--space-5);
}
.closing-cta h2 { font-size: clamp(30px, 4.6vw, 54px); max-width: 720px; letter-spacing: -0.03em; }

.site-footer {
  border-top: 1px solid var(--color-divider);
  padding: clamp(32px, 5vw, 48px) clamp(20px, 5vw, 64px);
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: var(--space-3);
}
.site-footer img { height: 20px; width: auto; object-fit: contain; }
.site-footer .copyright { font-size: 12px; color: var(--color-neutral-500); }

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 860px) {
  .grid-3 { grid-template-columns: 1fr; }
  .site-nav .links { gap: 14px; }
  .site-nav .links a.nav-link:not(.btn) { display: none; }
}

@media (max-width: 480px) {
  .hero .ctas { flex-direction: column; width: 100%; }
  .hero .ctas .btn { width: 100%; }
  .site-footer { flex-direction: column; align-items: flex-start; }
}

/* ==========================================================================
   Dark mode — the marketing site intentionally stays on the light/white
   ground (see design handoff notes) even when the OS is in dark mode, so
   the bold-geometric consumer register reads consistently.
   ========================================================================== */