/* ============================================================
   SIGNAL MATCHMAKING — Landing Page Styles
   Palette: Deep charcoal surfaces, warm cream text, gold accent
   Fonts: Cormorant Garamond (display) + Switzer (body)
   ============================================================ */

/* ── DESIGN TOKENS ── */
: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,     1.2rem  + 2.5vw,  3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem    + 4vw,    5rem);
  --text-hero: clamp(3.5rem,   1rem    + 7vw,    8rem);

  /* 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;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1.25rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition: 200ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Shadows */
  --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.15);
  --shadow-md: 0 4px 16px oklch(0 0 0 / 0.25);
  --shadow-lg: 0 16px 48px oklch(0 0 0 / 0.35);

  /* Layout */
  --content-narrow:  640px;
  --content-default: 960px;
  --content-wide:    1200px;

  /* Fonts */
  --font-display: 'Cormorant Garamond', Georgia, serif;
  --font-body:    'Switzer', 'Helvetica Neue', sans-serif;
}

/* ── LIGHT MODE ── */
:root, [data-theme="light"] {
  --color-bg:              #f5f3ef;
  --color-surface:         #faf9f7;
  --color-surface-2:       #ffffff;
  --color-surface-offset:  #ede9e3;
  --color-border:          #d8d4cc;
  --color-divider:         #e4e0d9;

  --color-text:            #1a1714;
  --color-text-muted:      #6b6760;
  --color-text-faint:      #b0ada8;
  --color-text-inverse:    #f5f3ef;

  --color-primary:         #9a7c3a;
  --color-primary-hover:   #7d6028;
  --color-primary-active:  #5e4718;
  --color-primary-subtle:  #f0e8d6;

  --color-accent-glow:     oklch(0.65 0.09 75 / 0.12);
}

/* ── DARK MODE (default) ── */
[data-theme="dark"] {
  --color-bg:              #111009;
  --color-surface:         #161411;
  --color-surface-2:       #1c1a16;
  --color-surface-offset:  #1f1d18;
  --color-border:          #2e2b24;
  --color-divider:         #252219;

  --color-text:            #e8e4db;
  --color-text-muted:      #857f73;
  --color-text-faint:      #4a4740;
  --color-text-inverse:    #111009;

  --color-primary:         #c9a05a;
  --color-primary-hover:   #dbb978;
  --color-primary-active:  #a8833d;
  --color-primary-subtle:  #2a2416;

  --color-accent-glow:     oklch(0.65 0.09 75 / 0.08);
}

/* ── SYSTEM PREFERENCE FALLBACK ── */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg:              #111009;
    --color-surface:         #161411;
    --color-surface-2:       #1c1a16;
    --color-surface-offset:  #1f1d18;
    --color-border:          #2e2b24;
    --color-divider:         #252219;
    --color-text:            #e8e4db;
    --color-text-muted:      #857f73;
    --color-text-faint:      #4a4740;
    --color-text-inverse:    #111009;
    --color-primary:         #c9a05a;
    --color-primary-hover:   #dbb978;
    --color-primary-active:  #a8833d;
    --color-primary-subtle:  #2a2416;
    --color-accent-glow:     oklch(0.65 0.09 75 / 0.08);
  }
}

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

html {
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-16);
}

body {
  min-height: 100dvh;
  line-height: 1.65;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  transition: background-color var(--transition), color var(--transition);
}

img, picture, video, canvas, svg { display: block; max-width: 100%; }
ul[role="list"], ol[role="list"] { list-style: none; }
input, button, textarea, select { font: inherit; color: inherit; }
h1, h2, h3, h4 { text-wrap: balance; line-height: 1.1; }
p, li { text-wrap: pretty; max-width: 68ch; }
button { cursor: pointer; background: none; border: none; }

::selection {
  background: oklch(from var(--color-primary) l c h / 0.2);
  color: var(--color-text);
}

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

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

/* ── LAYOUT UTILITIES ── */
.section-inner {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: clamp(var(--space-6), 5vw, var(--space-16));
}

.section-header {
  max-width: 600px;
  margin-bottom: var(--space-16);
}

.section-label {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}

.section-headline {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 400;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.section-sub {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ── BUTTONS ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-decoration: none;
  border-radius: var(--radius-full);
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border: 1px solid var(--color-primary);
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px oklch(from var(--color-primary) l c h / 0.3);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

.btn-ghost:hover {
  color: var(--color-text);
  border-color: var(--color-text-muted);
  background: var(--color-surface);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary-subtle);
  transform: translateY(-1px);
}

.btn-large {
  padding: var(--space-4) var(--space-10);
  font-size: var(--text-base);
  letter-spacing: 0.06em;
}

/* ── NAV ── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) clamp(var(--space-6), 5vw, var(--space-16));
  background: color-mix(in oklab, var(--color-bg) 85%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-divider);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: var(--color-text);
}

.nav-wordmark {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 400;
  letter-spacing: 0.05em;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  transition: all var(--transition);
}

.theme-toggle:hover {
  color: var(--color-text);
  border-color: var(--color-text-muted);
  background: var(--color-surface);
}

@media (max-width: 600px) {
  .nav-cta { display: none; }
}

/* ── HERO ── */
.hero {
  min-height: 100dvh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  padding-top: 80px;
  padding-inline: clamp(var(--space-6), 5vw, var(--space-16));
  max-width: var(--content-wide);
  margin-inline: auto;
  gap: var(--space-16);
}

.hero-inner {
  padding-block: var(--space-24);
}

.hero-eyebrow {
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-5);
}

.hero-headline {
  font-family: var(--font-display);
  font-size: var(--text-hero);
  font-weight: 400;
  line-height: 1.0;
  color: var(--color-text);
  margin-bottom: var(--space-6);
}

.hero-headline em {
  font-style: italic;
  color: var(--color-primary);
}

.hero-body {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: var(--space-8);
  max-width: 52ch;
}

.hero-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

.hero-note {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.04em;
}

/* Signal rings animation */
.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.signal-rings {
  position: relative;
  width: min(360px, 45vw);
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ring {
  position: absolute;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-primary);
  animation: pulse 3s ease-out infinite;
}

.ring-1 {
  width: 40%;
  aspect-ratio: 1;
  opacity: 0.5;
  animation-delay: 0s;
}

.ring-2 {
  width: 65%;
  aspect-ratio: 1;
  opacity: 0.3;
  animation-delay: 0.6s;
}

.ring-3 {
  width: 90%;
  aspect-ratio: 1;
  opacity: 0.15;
  animation-delay: 1.2s;
}

.ring-dot {
  width: 10px;
  height: 10px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  position: relative;
  z-index: 2;
  box-shadow: 0 0 20px var(--color-primary), 0 0 40px oklch(from var(--color-primary) l c h / 0.3);
}

@keyframes pulse {
  0%   { transform: scale(0.95); opacity: var(--ring-opacity, 0.4); }
  50%  { transform: scale(1.02); }
  100% { transform: scale(0.95); }
}

@media (max-width: 768px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
    min-height: auto;
    padding-block: var(--space-24) var(--space-16);
  }
  .hero-inner { padding-block: 0; }
  .hero-body { margin-inline: auto; }
  .hero-actions { justify-content: center; }
  .hero-visual {
    order: -1;
    margin-inline: auto;
  }
  .signal-rings {
    width: min(220px, 60vw);
  }
}

/* ── MANIFESTO STRIP ── */
.manifesto-strip {
  overflow: hidden;
  border-block: 1px solid var(--color-divider);
  padding-block: var(--space-4);
  background: var(--color-surface);
}

.manifesto-track {
  display: flex;
  gap: var(--space-6);
  width: max-content;
  animation: scroll-track 28s linear infinite;
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-style: italic;
  color: var(--color-text-muted);
  white-space: nowrap;
}

.manifesto-track .dot {
  color: var(--color-primary);
  font-style: normal;
}

@keyframes scroll-track {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ── HOW IT WORKS ── */
.how {
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
  background: var(--color-surface);
}

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-8);
}

.step {
  padding: var(--space-8);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.step:hover {
  border-color: var(--color-primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.step-num {
  display: block;
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 300;
  color: var(--color-primary);
  opacity: 0.4;
  line-height: 1;
  margin-bottom: var(--space-4);
}

.step-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.step-body {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.75;
}

/* ── PHILOSOPHY ── */
.philosophy {
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
}

.philosophy-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: start;
}

.philosophy-quote blockquote {
  position: relative;
  padding: var(--space-10);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-primary);
  border-radius: var(--radius-xl);
}

.philosophy-quote blockquote p {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 400;
  font-style: italic;
  line-height: 1.5;
  color: var(--color-text);
  margin-bottom: var(--space-5);
  max-width: none;
}

.philosophy-quote cite {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-style: normal;
  letter-spacing: 0.04em;
}

.philosophy-pillars {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.pillar {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: var(--space-4);
  align-items: start;
}

.pillar-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  flex-shrink: 0;
  background: var(--color-surface);
}

.pillar-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.pillar-body {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.75;
  grid-column: 2;
}

@media (max-width: 768px) {
  .philosophy-inner {
    grid-template-columns: 1fr;
  }
}

/* ── PRICING ── */
.pricing {
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
  background: var(--color-surface);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin-bottom: var(--space-12);
  align-items: start;
}

.pricing-card {
  padding: var(--space-8);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  position: relative;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.pricing-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.pricing-card--featured {
  background: var(--color-surface-2);
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary), var(--shadow-md);
  transform: translateY(-6px);
}

.tier-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.08em;
  padding: var(--space-1) var(--space-4);
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.pricing-card-header {
  border-bottom: 1px solid var(--color-divider);
  padding-bottom: var(--space-6);
}

.tier-name {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.tier-price {
  display: flex;
  align-items: baseline;
  gap: var(--space-1);
  margin-bottom: var(--space-3);
}

.price-amount {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 500;
  color: var(--color-text);
}

.price-period {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.tier-tagline {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-style: italic;
  line-height: 1.65;
}

.tier-features {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  flex: 1;
}

.tier-features li {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding-left: var(--space-5);
  position: relative;
  line-height: 1.5;
  max-width: none;
}

.tier-features li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  opacity: 0.6;
}

.tier-feature--limited {
  color: var(--color-primary) !important;
  font-weight: 500;
}

.tier-cta {
  width: 100%;
  justify-content: center;
  margin-top: auto;
}

@media (max-width: 900px) {
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin-inline: auto;
  }
  .pricing-card--featured {
    transform: none;
    order: -1;
  }
}

/* ── FOUNDING MEMBER ── */
.founding-member {
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-xl);
  padding: var(--space-10) var(--space-12);
  background: var(--color-primary-subtle);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-4);
}

.founding-badge {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.founding-headline {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 500;
  color: var(--color-text);
}

.founding-body {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.8;
  max-width: 65ch;
}

@media (max-width: 600px) {
  .founding-member {
    padding: var(--space-8);
  }
}

/* ── FOR WHO ── */
.for-who {
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
}

.for-who-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
}

.for-who-col {
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
}

.for-who-col--yes {
  background: var(--color-surface);
}

.for-who-col--no {
  background: var(--color-bg);
}

.for-who-label {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--space-6);
}

.for-who-col ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.for-who-col li {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding-left: var(--space-5);
  position: relative;
  line-height: 1.6;
  max-width: none;
}

.for-who-col--yes li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 600;
}

.for-who-col--no li::before {
  content: '×';
  position: absolute;
  left: 0;
  color: var(--color-text-faint);
  font-weight: 600;
}

@media (max-width: 680px) {
  .for-who-grid {
    grid-template-columns: 1fr;
  }
}

/* ── APPLY CTA ── */
.apply {
  padding-block: clamp(var(--space-20), 10vw, var(--space-24));
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
}

.apply-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.apply-signal-mark {
  color: var(--color-primary);
  opacity: 0.5;
  margin-bottom: var(--space-8);
}

.apply-headline {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 400;
  line-height: 1.1;
  color: var(--color-text);
  margin-bottom: var(--space-6);
}

.apply-headline em {
  font-style: italic;
  color: var(--color-primary);
}

.apply-body {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: var(--space-8);
  max-width: 48ch;
}

.apply-note {
  margin-top: var(--space-5);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  letter-spacing: 0.04em;
}

/* ── FOOTER ── */
.footer {
  padding-block: var(--space-10);
  border-top: 1px solid var(--color-divider);
}

.footer-inner {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: clamp(var(--space-6), 5vw, var(--space-16));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 400;
  color: var(--color-text-muted);
}

.footer-links {
  display: flex;
  gap: var(--space-6);
}

.footer-links a {
  font-size: var(--text-sm);
  color: var(--color-text-faint);
  text-decoration: none;
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--color-text-muted);
}

.footer-copy {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  max-width: none;
}

/* ── SCROLL ANIMATIONS ── */
.fade-up {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}