/* ============================================================
   Hart BasicMed — Aviation-native, editorial, restrained.
   Palette: Deep navy (sky at altitude) + brass warm accent.
   Type: Cormorant Garamond (display) + General Sans (body).
   ============================================================ */

:root {
  /* Type scale */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.4rem + 2.5vw, 3.5rem);
  --text-hero: clamp(2.5rem, 1rem + 5vw, 5.5rem);

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Radius / transitions */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-full: 9999px;
  --transition-interactive: 200ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Fonts */
  --font-display: 'Cormorant Garamond', 'Iowan Old Style', Georgia, serif;
  --font-body: 'General Sans', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;

  /* Content widths */
  --content-default: 1120px;
  --content-narrow: 720px;
}

/* LIGHT — cream + deep navy + brass */
:root,
[data-theme="light"] {
  --color-bg: #f8f6f1;
  --color-surface: #fdfbf6;
  --color-surface-2: #ffffff;
  --color-surface-offset: #efece5;
  --color-surface-dynamic: #e6e2d8;
  --color-divider: #d8d3c6;
  --color-border: #c8c1b1;

  --color-text: #1a2637;
  --color-text-muted: #56606f;
  --color-text-faint: #93989f;
  --color-text-inverse: #f8f6f1;

  --color-primary: #14304f;          /* Deep aviation navy */
  --color-primary-hover: #0d223b;
  --color-primary-active: #0a1a2e;
  --color-primary-highlight: #d8dee7;

  --color-accent: #a67027;           /* Brass */
  --color-accent-hover: #8a5b1d;
  --color-accent-highlight: #eadfc9;

  --shadow-sm: 0 1px 2px rgba(20, 48, 79, 0.06);
  --shadow-md: 0 6px 20px rgba(20, 48, 79, 0.08);
  --shadow-lg: 0 20px 48px rgba(20, 48, 79, 0.12);
}

/* DARK — instrument panel: deep charcoal + brass */
[data-theme="dark"] {
  --color-bg: #10141b;
  --color-surface: #161b24;
  --color-surface-2: #1c2230;
  --color-surface-offset: #1a1f2a;
  --color-surface-dynamic: #232a38;
  --color-divider: #262d3a;
  --color-border: #363e4d;

  --color-text: #e4e3de;
  --color-text-muted: #8b9099;
  --color-text-faint: #5a6068;
  --color-text-inverse: #10141b;

  --color-primary: #7fb5d6;
  --color-primary-hover: #a4cae4;
  --color-primary-active: #b7d6ea;
  --color-primary-highlight: #1e2c3d;

  --color-accent: #d19a52;
  --color-accent-hover: #e6b071;
  --color-accent-highlight: #3d2f1a;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 20px 48px rgba(0, 0, 0, 0.6);
}

/* ============================================================
   BASE
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}

body {
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  transition: background 200ms ease, color 200ms ease;
}

img, svg { display: block; max-width: 100%; height: auto; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.12;
  letter-spacing: -0.01em;
  text-wrap: balance;
  color: var(--color-text);
}
h1 em, h2 em, h3 em {
  font-style: italic;
  color: var(--color-accent);
  font-weight: 500;
}

p, li { text-wrap: pretty; max-width: 68ch; }

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-interactive);
}
a:hover { color: var(--color-accent); }

::selection { background: var(--color-accent-highlight); color: var(--color-text); }

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap;
}

.container {
  width: 100%;
  max-width: var(--content-default);
  padding-inline: clamp(var(--space-5), 4vw, var(--space-12));
  margin-inline: auto;
}

/* ============================================================
   HEADER
   ============================================================ */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklab, var(--color-bg) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(14px);
  -webkit-backdrop-filter: saturate(1.4) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 200ms ease, background 200ms ease;
}
.header--scrolled { border-bottom-color: var(--color-divider); }

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  padding-block: var(--space-4);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-primary);
}
.brand__mark {
  width: 32px;
  height: 32px;
  color: var(--color-primary);
  flex-shrink: 0;
}
.brand__wordmark { display: flex; flex-direction: column; line-height: 1.1; }
.brand__name {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.005em;
  color: var(--color-text);
}
.brand__tag {
  font-size: 0.7rem;
  font-family: var(--font-body);
  color: var(--color-text-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}
.nav a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-weight: 500;
}
.nav a:hover { color: var(--color-text); }
.nav .btn { padding-block: 0.55rem; padding-inline: 1rem; }

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  cursor: pointer;
}
.theme-toggle:hover { color: var(--color-text); border-color: var(--color-text-muted); }

@media (max-width: 780px) {
  .nav { gap: var(--space-3); }
  .nav a:not(.btn) { display: none; }
  .brand__tag { display: none; }
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.01em;
  border-radius: var(--radius-full);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-interactive);
}
.btn--primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}
.btn--primary:hover {
  background: var(--color-primary-hover);
  color: var(--color-text-inverse);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.btn--ghost {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}
.btn--ghost:hover {
  color: var(--color-text);
  border-color: var(--color-text);
  background: color-mix(in oklab, var(--color-text) 4%, transparent);
}
.btn--sm { padding: var(--space-2) var(--space-4); font-size: 0.8125rem; }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  padding-block: clamp(var(--space-16), 12vw, var(--space-32));
  overflow: hidden;
  isolation: isolate;
}
.hero__bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  display: block;
}
.hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
  display: block;
}
.hero__overlay {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(90deg,
      rgba(15, 23, 42, 0.78) 0%,
      rgba(15, 23, 42, 0.55) 45%,
      rgba(15, 23, 42, 0.15) 100%),
    linear-gradient(180deg,
      rgba(15, 23, 42, 0.10) 0%,
      rgba(15, 23, 42, 0.10) 60%,
      var(--color-bg) 100%);
}
.hero__inner {
  position: relative;
  z-index: 1;
  max-width: 920px;
}
.hero__eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #f5c67a;
  padding: 0.35rem 0.75rem;
  border: 1px solid rgba(245, 198, 122, 0.75);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-6);
  background: rgba(15, 23, 42, 0.25);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}
.hero__title {
  font-size: var(--text-hero);
  font-weight: 500;
  line-height: 1.02;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-5);
  max-width: 16ch;
  color: #ffffff;
  text-shadow: 0 2px 24px rgba(0, 0, 0, 0.45);
}
.hero__title em {
  color: #f5c67a;
  font-style: italic;
}
.hero__diff {
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--text-xl);
  font-weight: 400;
  color: #f5c67a;
  max-width: 42ch;
  margin-bottom: var(--space-6);
  line-height: 1.35;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
}
.hero__lede {
  font-size: var(--text-lg);
  color: rgba(255, 255, 255, 0.92);
  max-width: 55ch;
  margin-bottom: var(--space-8);
  line-height: 1.5;
  text-shadow: 0 1px 12px rgba(0, 0, 0, 0.5);
}
.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-10);
}
.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.82);
  font-weight: 500;
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.6);
}
.hero__meta span[aria-hidden] { color: #f5c67a; }

/* Hero ghost button on dark background */
.hero .btn--ghost {
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.55);
  background: rgba(15, 23, 42, 0.25);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
.hero .btn--ghost:hover {
  color: #ffffff;
  border-color: #ffffff;
  background: rgba(255, 255, 255, 0.15);
}
/* Hero primary button — extra pop against dark bg */
.hero .btn--primary {
  background: #f5c67a;
  color: #0f172a;
  border-color: #f5c67a;
}
.hero .btn--primary:hover {
  background: #ffd894;
  border-color: #ffd894;
  color: #0f172a;
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

/* ============================================================
   VALUE PROPS
   ============================================================ */
.props {
  border-block: 1px solid var(--color-divider);
  background: var(--color-surface);
  padding-block: clamp(var(--space-12), 8vw, var(--space-20));
}
.props__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-10);
}
.prop {}
.prop__num {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-accent);
  letter-spacing: 0.1em;
  margin-bottom: var(--space-3);
}
.prop h3 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-3);
}
.prop p {
  color: var(--color-text-muted);
  font-size: var(--text-base);
}

/* ============================================================
   GENERIC SECTIONS
   ============================================================ */
.section {
  padding-block: clamp(var(--space-16), 10vw, var(--space-32));
}
.section--surface {
  background: var(--color-surface);
  border-block: 1px solid var(--color-divider);
}
.section--offset {
  background: var(--color-bg);
}

.section__eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
}
.section__title {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-6);
  max-width: 22ch;
}
.section__body { max-width: 62ch; }
.section__body p { color: var(--color-text-muted); margin-bottom: var(--space-4); font-size: var(--text-base); line-height: 1.65; }
.section__body p:last-child { margin-bottom: 0; }
.section__body .lede { color: var(--color-text); font-size: var(--text-lg); line-height: 1.5; }

.section__header {
  margin-bottom: var(--space-12);
  max-width: 40rem;
}
.section__header .section__title { max-width: none; }

.two-col {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr);
  gap: clamp(var(--space-8), 6vw, var(--space-16));
  align-items: start;
}
@media (max-width: 780px) {
  .two-col { grid-template-columns: 1fr; }
}

/* ============================================================
   CHECKLIST
   ============================================================ */
.checklist {
  list-style: none;
  margin-top: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.checklist li {
  position: relative;
  padding-left: var(--space-8);
  color: var(--color-text);
  font-size: var(--text-base);
}
.checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 20px;
  height: 1.5px;
  background: var(--color-accent);
}

/* ============================================================
   PRICING
   ============================================================ */
.price-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}
.price-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  padding: var(--space-6) var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  transition: transform var(--transition-interactive), box-shadow var(--transition-interactive), border-color var(--transition-interactive);
}
.price-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-border);
  box-shadow: var(--shadow-md);
}
.price-card--feature {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-text-inverse);
}
.price-card--feature .price-card__label,
.price-card--feature .price-card__note {
  color: color-mix(in oklab, var(--color-text-inverse) 82%, transparent);
}
.price-card__label {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--color-text-muted);
}
.price-card__amount {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 1.5rem + 2vw, 3.5rem);
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--color-text);
}
.price-card--feature .price-card__amount { color: var(--color-text-inverse); }
.price-card__amount--sm { font-size: clamp(1.75rem, 1.2rem + 1.2vw, 2.25rem); }
.price-card__note {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.5;
  margin-top: var(--space-2);
}

.price-note {
  padding: var(--space-6);
  background: var(--color-surface-offset);
  border-left: 3px solid var(--color-accent);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.price-note p { font-size: 0.95rem; color: var(--color-text); max-width: none; }
.price-note strong { color: var(--color-primary); font-weight: 600; }

/* ============================================================
   SERVICE AREA
   ============================================================ */
.area-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-10);
  margin-bottom: var(--space-8);
}
.area__heading {
  font-size: var(--text-lg);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-divider);
  color: var(--color-primary);
}
.area__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.area__list li {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.45;
}
.area__footnote {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  max-width: 60ch;
  font-style: italic;
}

/* ============================================================
   CREDENTIALS
   ============================================================ */
.cred-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-4);
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-divider);
}
.cred__label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-2);
}
.cred__value {
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--color-text);
  line-height: 1.25;
}

/* ============================================================
   FAQ
   ============================================================ */
.faq {
  max-width: 780px;
  border-top: 1px solid var(--color-divider);
}
.faq details {
  border-bottom: 1px solid var(--color-divider);
  padding-block: var(--space-5);
}
.faq summary {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--color-text);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-4);
  transition: color var(--transition-interactive);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  font-family: var(--font-body);
  font-size: 1.5rem;
  color: var(--color-accent);
  font-weight: 300;
  line-height: 1;
  transition: transform 240ms cubic-bezier(0.16, 1, 0.3, 1);
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq summary:hover { color: var(--color-accent); }
.faq details p {
  color: var(--color-text-muted);
  margin-top: var(--space-4);
  font-size: var(--text-base);
  line-height: 1.65;
  max-width: 68ch;
}

/* ============================================================
   BOOK / CTA
   ============================================================ */
.cta-card {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-radius: var(--radius-lg);
  padding: clamp(var(--space-8), 6vw, var(--space-16));
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: var(--space-10);
  align-items: center;
}
.cta-card .section__eyebrow { color: var(--color-accent); }
.cta-card .section__title { color: var(--color-text-inverse); }
.cta-card .lede {
  color: color-mix(in oklab, var(--color-text-inverse) 85%, transparent);
  font-size: var(--text-lg);
  line-height: 1.5;
  margin-top: var(--space-4);
}
@media (max-width: 780px) {
  .cta-card { grid-template-columns: 1fr; }
}

.contact-block {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid color-mix(in oklab, var(--color-text-inverse) 20%, transparent);
}
.contact-line {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding-block: var(--space-4);
  border-bottom: 1px solid color-mix(in oklab, var(--color-text-inverse) 20%, transparent);
  color: var(--color-text-inverse);
}
a.contact-line { color: var(--color-text-inverse); }
a.contact-line:hover .contact-line__value { color: var(--color-accent); }
.contact-line__label {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: color-mix(in oklab, var(--color-text-inverse) 65%, transparent);
  font-weight: 600;
}
.contact-line__value {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 500;
  transition: color var(--transition-interactive);
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  padding-block: var(--space-12) var(--space-10);
  border-top: 1px solid var(--color-divider);
  background: var(--color-surface);
}
.footer__inner {
  display: grid;
  grid-template-columns: minmax(0, 0.7fr) minmax(0, 1.6fr);
  gap: var(--space-10);
  align-items: start;
}
@media (max-width: 640px) { .footer__inner { grid-template-columns: 1fr; } }
.footer__brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-primary);
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 500;
}
.footer__brand .brand__mark { width: 24px; height: 24px; }
.footer__meta { display: flex; flex-direction: column; gap: var(--space-4); }
.footer__meta p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.6;
  max-width: 70ch;
}
.footer__disclaimer { font-size: 0.8rem; }

/* ============================================================
   MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}