/* ==========================================================================
   PicksCompass — Homepage Stylesheet
   Pure CSS. No framework. Mobile-first, then enhanced upward.
   ========================================================================== */

/* ---------- Design tokens ---------- */
:root {
  /* Brand palette (fixed by brief) */
  --color-primary: #0F172A;
  --color-secondary: #2563EB;
  --color-accent: #3B82F6;
  --color-bg: #FFFFFF;
  --color-bg-alt: #F8FAFC;
  --color-border: #E2E8F0;
  --color-text: #334155;

  --color-text-muted: #64748B;
  --color-on-dark: #F1F5F9;
  --color-on-dark-muted: #94A3B8;

  /* Type */
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --fs-eyebrow: 0.8125rem;
  --fs-body: clamp(1rem, 0.96rem + 0.15vw, 1.0625rem);
  --fs-h1: clamp(2.5rem, 1.9rem + 3vw, 4.5rem);
  --fs-h2: clamp(1.9rem, 1.65rem + 1.2vw, 2.75rem);
  --fs-h3: clamp(1.15rem, 1.08rem + 0.35vw, 1.375rem);
  --lh-tight: 1.08;
  --lh-normal: 1.65;

  /* Layout */
  --container-w: 1180px;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --space-section: clamp(4.5rem, 4rem + 2.5vw, 8rem);

  /* Motion */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --dur-fast: 180ms;
  --dur-med: 420ms;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06), 0 1px 1px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 8px 24px -8px rgba(15, 23, 42, 0.12), 0 2px 8px rgba(15, 23, 42, 0.05);
  --shadow-lg: 0 24px 60px -20px rgba(15, 23, 42, 0.22);

  color-scheme: light;
}

/* Dark-mode tokens — infrastructure only, not activated by default.
   Enable in future by adding data-theme="dark" to <html>. */
[data-theme="dark"] {
  --color-bg: #0B1220;
  --color-bg-alt: #0F172A;
  --color-border: #1E293B;
  --color-text: #CBD5E1;
  --color-text-muted: #94A3B8;
  color-scheme: dark;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: var(--lh-normal);
  color: var(--color-text);
  background: var(--color-bg);
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, picture, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; padding: 0; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }

h1, h2, h3, h4 {
  color: var(--color-primary);
  font-weight: 800;
  line-height: var(--lh-tight);
  letter-spacing: -0.02em;
}
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); font-weight: 700; }

:focus-visible {
  outline: 2px solid var(--color-secondary);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-primary);
  color: #fff;
  padding: 0.75rem 1.25rem;
  border-radius: 0 0 var(--radius-sm) 0;
  z-index: 999;
}
.skip-link:focus {
  left: 0;
}

.container {
  width: 100%;
  max-width: var(--container-w);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2.5rem);
}

/* ---------- Reveal-on-scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity var(--dur-med) var(--ease), transform var(--dur-med) var(--ease);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.9375rem;
  letter-spacing: -0.01em;
  transition: transform var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
  white-space: nowrap;
}
.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover {
  background: var(--color-secondary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.btn-ghost {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-border);
}
.btn-ghost:hover {
  border-color: var(--color-secondary);
  color: var(--color-secondary);
  transform: translateY(-2px);
}
.btn-sm { padding: 0.625rem 1.25rem; font-size: 0.875rem; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(14px) saturate(1.4);
  -webkit-backdrop-filter: blur(14px) saturate(1.4);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
}
.site-header.is-scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: 0 1px 0 rgba(15, 23, 42, 0.02);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--color-primary);
}
.logo-mark { color: var(--color-secondary); flex-shrink: 0; }
.logo-word {
  font-weight: 800;
  font-size: 1.125rem;
  letter-spacing: -0.02em;
}

.main-nav ul {
  display: flex;
  align-items: center;
  gap: 2.25rem;
}
.main-nav a {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text);
  position: relative;
  padding-block: 0.25rem;
}
.main-nav a::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 1.5px;
  background: var(--color-secondary);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--dur-fast) var(--ease);
}
.main-nav a:hover { color: var(--color-primary); }
.main-nav a:hover::after { transform: scaleX(1); transform-origin: left; }

.header-actions { display: flex; align-items: center; gap: 1rem; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 24px;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  height: 1.5px;
  background: var(--color-primary);
  border-radius: 1px;
  transition: transform var(--dur-fast) var(--ease), opacity var(--dur-fast) var(--ease);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(5rem, 4rem + 5vw, 9rem) clamp(4rem, 3rem + 4vw, 6rem);
}

.hero-field {
  position: absolute;
  top: 50%;
  right: -10%;
  transform: translateY(-50%);
  width: min(56vw, 640px);
  height: min(56vw, 640px);
  opacity: 0.55;
  pointer-events: none;
}
.compass-needle {
  animation: needle-drift 16s ease-in-out infinite;
}
@keyframes needle-drift {
  0%, 100% { transform: rotate(-6deg); }
  50% { transform: rotate(6deg); }
}
@media (prefers-reduced-motion: reduce) {
  .compass-needle { animation: none; }
}

.hero-inner {
  position: relative;
  max-width: 760px;
}

.eyebrow {
  font-size: var(--fs-eyebrow);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-secondary);
  margin-bottom: 1rem;
}

.hero-title {
  font-size: var(--fs-h1);
  margin-bottom: 1.5rem;
}

.hero-sub {
  font-size: clamp(1.0625rem, 1rem + 0.3vw, 1.25rem);
  color: var(--color-text-muted);
  max-width: 560px;
  margin-bottom: 2.5rem;
  line-height: 1.6;
}

.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

/* ---------- Section shared ---------- */
section { padding-block: var(--space-section); }

.section-head {
  max-width: 620px;
  margin-bottom: clamp(2.5rem, 2rem + 2vw, 4rem);
}
.section-head h2 { margin-block: 0.75rem 1rem; }
.section-lead { color: var(--color-text-muted); font-size: 1.0625rem; }
.section-head.light .eyebrow { color: #93C5FD; }
.section-head.light h2 { color: #fff; }
.section-head.light .section-lead { color: var(--color-on-dark-muted); }

/* ---------- Trust strip ---------- */
.trust-strip {
  padding-block: 2rem;
  border-block: 1px solid var(--color-border);
}
.trust-strip-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: clamp(1.5rem, 5vw, 4rem);
}
.trust-item {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  color: var(--color-text-muted);
  font-weight: 600;
  font-size: 0.9375rem;
}
.trust-item svg { color: var(--color-secondary); }

/* ---------- How it works ---------- */
.process-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.process-card {
  position: relative;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2.25rem 2rem;
  transition: transform var(--dur-med) var(--ease), box-shadow var(--dur-med) var(--ease), border-color var(--dur-med) var(--ease);
}
.process-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: #C7D6F5;
}
.process-index {
  display: block;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-secondary);
  letter-spacing: 0.05em;
  margin-bottom: 1.25rem;
}
.process-card svg { color: var(--color-secondary); margin-bottom: 1rem; }
.process-card h3 { margin-bottom: 0.5rem; }
.process-card p { color: var(--color-text-muted); font-size: 0.9375rem; }

/* ---------- Categories ---------- */
.category-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}
.category-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.75rem 1.5rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  transition: transform var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}
.category-card svg { color: var(--color-secondary); }
.category-card h3 { font-size: 1.0625rem; }
.category-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: #C7D6F5;
}

/* ---------- Why trust ---------- */
.why-trust { background: var(--color-bg-alt); }
.why-trust-inner {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: clamp(2rem, 5vw, 5rem);
  align-items: start;
}
.why-trust-copy { position: sticky; top: 110px; }
.why-trust-grid {
  display: grid;
  gap: 1px;
  background: var(--color-border);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.why-item {
  background: var(--color-bg);
  padding: 1.75rem 2rem;
}
.why-item h3 { margin-bottom: 0.4rem; font-size: 1.0625rem; }
.why-item p { color: var(--color-text-muted); font-size: 0.9375rem; }

/* ---------- Editorial standards (dark section) ---------- */
.editorial-standards {
  background: var(--color-primary);
  color: var(--color-on-dark);
}
.timeline {
  display: grid;
  gap: 0;
  border-left: 1px solid rgba(148, 163, 184, 0.25);
  margin-left: 0.5rem;
}
.timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 1.5rem;
  padding-block: 1.75rem;
  padding-left: 1.5rem;
}
.timeline-item:not(:last-child) { border-bottom: 1px solid rgba(148, 163, 184, 0.12); }
.timeline-marker {
  position: relative;
  left: -1.5rem;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(59, 130, 246, 0.12);
  border: 1px solid rgba(59, 130, 246, 0.4);
  color: #93C5FD;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.8125rem;
  flex-shrink: 0;
}
.timeline-content h3 { color: #fff; margin-bottom: 0.4rem; }
.timeline-content p { color: var(--color-on-dark-muted); font-size: 0.9375rem; max-width: 560px; }

/* ---------- FAQ ---------- */
.faq-inner { max-width: 760px; }
.faq-list { display: flex; flex-direction: column; gap: 0.75rem; }
.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  background: var(--color-bg-alt);
}
.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-weight: 600;
  color: var(--color-primary);
  cursor: pointer;
  list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-chevron { color: var(--color-text-muted); transition: transform var(--dur-fast) var(--ease); flex-shrink: 0; }
.faq-item[open] .faq-chevron { transform: rotate(180deg); }
.faq-item p { margin-top: 1rem; color: var(--color-text-muted); font-size: 0.9375rem; }

/* ---------- Closing CTA ---------- */
.closing-cta {
  background: linear-gradient(180deg, var(--color-bg-alt), var(--color-bg));
  text-align: center;
}
.closing-cta-inner { max-width: 620px; margin-inline: auto; }
.closing-cta h2 { margin-bottom: 1rem; }
.closing-cta p { color: var(--color-text-muted); margin-bottom: 2rem; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-primary);
  color: var(--color-on-dark-muted);
  padding-top: clamp(3rem, 3rem + 2vw, 5rem);
}
.footer-inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 2.5rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(148, 163, 184, 0.15);
}
.footer-brand .logo { color: #fff; margin-bottom: 0.9rem; }
.footer-brand p { font-size: 0.9375rem; margin-bottom: 1.25rem; }
.social-icons { display: flex; gap: 0.75rem; }
.social-icons a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(148, 163, 184, 0.3);
  color: var(--color-on-dark-muted);
  transition: border-color var(--dur-fast) var(--ease), color var(--dur-fast) var(--ease);
}
.social-icons a:hover { color: #fff; border-color: #fff; }

.footer-col h4 {
  color: #fff;
  font-size: 0.875rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.footer-col ul { display: flex; flex-direction: column; gap: 0.65rem; }
.footer-col a { font-size: 0.9375rem; transition: color var(--dur-fast) var(--ease); }
.footer-col a:hover { color: #fff; }

.footer-bottom {
  padding-block: 1.5rem;
  font-size: 0.8125rem;
}

/* ---------- Back to top ---------- */
.back-to-top {
  position: fixed;
  right: 1.5rem;
  bottom: 1.5rem;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity var(--dur-fast) var(--ease), transform var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease);
  z-index: 90;
}
.back-to-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background: var(--color-secondary); }

/* ==========================================================================
   Legal pages (privacy / cookie / terms)
   ========================================================================== */
.legal-hero {
  padding-block: clamp(4rem, 3.5rem + 3vw, 6rem) 2rem;
  border-bottom: 1px solid var(--color-border);
}
.legal-hero .eyebrow { margin-bottom: 0.75rem; }
.legal-hero h1 {
  font-size: var(--fs-h2);
  margin-bottom: 0.75rem;
}
.legal-hero .updated {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

.legal-content {
  padding-block: clamp(3rem, 2.5rem + 2vw, 5rem);
}
.legal-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: clamp(2rem, 4vw, 4rem);
  align-items: start;
}
.legal-toc {
  position: sticky;
  top: 110px;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  border-left: 1px solid var(--color-border);
  padding-left: 1.25rem;
}
.legal-toc a {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  font-weight: 500;
}
.legal-toc a:hover { color: var(--color-secondary); }

.legal-body { max-width: 760px; }
.legal-body section { padding-block: 0 2.5rem; }
.legal-body section:last-child { padding-bottom: 0; }
.legal-body h2 {
  font-size: 1.375rem;
  margin-bottom: 0.9rem;
  scroll-margin-top: 100px;
}
.legal-body p { margin-bottom: 1rem; color: var(--color-text); }
.legal-body p:last-child { margin-bottom: 0; }
.legal-body ul {
  list-style: disc;
  padding-left: 1.25rem;
  margin-bottom: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.legal-body a { color: var(--color-secondary); text-decoration: underline; text-underline-offset: 2px; }
.legal-body strong { color: var(--color-primary); }

@media (max-width: 860px) {
  .legal-layout { grid-template-columns: 1fr; }
  .legal-toc {
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
    border-left: none;
    border-bottom: 1px solid var(--color-border);
    padding-left: 0;
    padding-bottom: 1.25rem;
    gap: 1rem 1.5rem;
  }
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 980px) {
  .why-trust-inner { grid-template-columns: 1fr; }
  .why-trust-copy { position: static; }
  .category-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 860px) {
  .main-nav {
    position: fixed;
    inset: 76px 0 0 0;
    background: var(--color-bg);
    transform: translateX(100%);
    transition: transform var(--dur-med) var(--ease);
    padding: 2rem clamp(1.25rem, 4vw, 2.5rem);
    overflow-y: auto;
  }
  .main-nav.is-open { transform: translateX(0); }
  .main-nav ul { flex-direction: column; align-items: flex-start; gap: 1.5rem; }
  .main-nav a { font-size: 1.125rem; }
  .nav-toggle { display: flex; }
  .header-actions .btn-primary { display: none; }
  .process-grid { grid-template-columns: 1fr; }
  .category-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr; gap: 2rem; }
}

@media (max-width: 560px) {
  .hero-field { opacity: 0.35; width: 90vw; height: 90vw; right: -25%; }
  .category-grid { grid-template-columns: 1fr 1fr; }
  .hero-actions .btn { width: 100%; }
  .hero-actions { flex-direction: column; }
}

/* ---------- Container query readiness (progressive enhancement) ---------- */
@supports (container-type: inline-size) {
  .why-trust { container-type: inline-size; }
}
@container (max-width: 700px) {
  .why-trust-inner { grid-template-columns: 1fr; }
}
