/* Splitly website — design tokens & component styles.
   Palette, pairs and rules come from DESIGN.md (adapted from the app's Midnight Mint system).
   Only legal contrast pairs are used; surfaces are flat, separated by tone and 1px hairlines. */

:root {
  --midnight: #15191F;
  --coal: #20262E;      /* Dark Slate */
  --graphite: #2A323C;
  --hairline: #333C46;
  --mint: #39E6B0;
  --mint-pressed: #2FC99A;
  --cyan: #64CFF6;
  --coral: #FF707A;
  --amber: #FFB65C;
  --ink: #F5F7FA;       /* Soft White */
  --gray: #9CA8B5;      /* Cool Gray */
  --header-h: 4rem;
}

/* Plus Jakarta Sans is bundled locally, never runtime-fetched. */
@font-face {
  font-family: "Plus Jakarta Sans";
  src: url("../fonts/PlusJakartaSans-Regular.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Plus Jakarta Sans";
  src: url("../fonts/PlusJakartaSans-SemiBold.ttf") format("truetype");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Plus Jakarta Sans";
  src: url("../fonts/PlusJakartaSans-Bold.ttf") format("truetype");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 1.5rem);
}

body {
  background-color: var(--midnight);
  color: var(--ink);
  font-family: "Plus Jakarta Sans", ui-sans-serif, system-ui, sans-serif;
  /* Brand rule: amounts never shift as they update — tabular figures everywhere. */
  font-feature-settings: "tnum";
}

/* Focus is visible on every interactive element; keyboard never strands. */
:focus-visible {
  outline: 2px solid var(--mint);
  outline-offset: 2px;
}

/* Sticky header owns its inset: anchors never land underneath it. */
.site-header {
  height: var(--header-h);
  border-bottom: 1px solid var(--hairline);
}

/* Overline section label (Caption role, uppercase per app convention). */
.overline {
  font-size: 0.75rem;
  line-height: 1.4;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--gray);
}

/* Phone frame for app screenshots. Flat: hairline border, no shadow. */
.phone-frame {
  border: 1px solid var(--hairline);
  border-radius: 2.75rem;
  background-color: var(--coal);
  padding: 0.5rem;
}
.phone-frame .phone-screen {
  border-radius: 2.25rem;
  overflow: hidden;
  display: block;
  background-color: var(--midnight);
}

/* Legal prose pages. */
.legal-body {
  max-width: 42rem;
}
.legal-body h2 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--ink);
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
}
.legal-body p,
.legal-body li {
  color: var(--gray);
  line-height: 1.7;
  margin-bottom: 0.75rem;
}
.legal-body ul {
  list-style: disc;
  padding-left: 1.25rem;
  margin-bottom: 0.75rem;
}
.legal-body strong {
  color: var(--ink);
  font-weight: 600;
}
.legal-body a {
  color: var(--mint);
}

/* FAQ accordion: touch-friendly summary rows (>= 48px tap height). */
details.faq {
  background-color: var(--graphite);
  border: 1px solid var(--hairline);
  border-radius: 1rem;
}
details.faq + details.faq {
  margin-top: 0.75rem;
}
details.faq summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 3rem; /* 48px tap target */
  padding: 1rem 1.25rem;
  font-weight: 600;
  color: var(--ink);
}
details.faq summary::-webkit-details-marker {
  display: none;
}
details.faq summary .faq-chevron {
  color: var(--mint);
  transition: transform 200ms ease-out;
  flex: none;
}
details.faq[open] summary .faq-chevron {
  transform: rotate(180deg);
}
details.faq .faq-answer {
  padding: 0 1.25rem 1.25rem;
  color: var(--gray);
  line-height: 1.7;
}

/* Reduced motion: every effect degrades to its final state. */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  [data-aos] {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  .faq-chevron {
    transition: none;
  }
}