/* ═══════════════════════════════════════════════
   LIMNAL — Landing Page Styles
   ═══════════════════════════════════════════════ */

:root {
  --bg:             #F7F3EE;
  --bg-alt:         #F0EBE3;
  --text:           #2D2926;
  --text-secondary: #847B72;
  --text-tertiary:  #B0A89F;
  --sage:           #8A9B7E;
  --sage-dark:      #6E8062;
  --sage-faint:     #E8EDE4;
  --slate:          #6B7580;
  --stone:          #D6CFC6;
  --fog:            #EDEAE5;

  --font-display: 'Cormorant Garamond', 'Georgia', serif;
  --font-body:    'DM Sans', 'Helvetica Neue', sans-serif;

  --space-xs:  0.5rem;
  --space-sm:  1rem;
  --space-md:  2rem;
  --space-lg:  4rem;
  --space-xl:  6rem;
  --space-2xl: 10rem;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: 1.125rem;
  line-height: 1.75;
  color: var(--text);
  background-color: var(--bg);
  overflow-x: hidden;
}

/* ─── Grain Overlay ─── */
.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
}

/* ─── Container ─── */
.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* ─── Threshold Dividers ─── */
.threshold-line {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg) 0;
  position: relative;
}

.threshold-line::before,
.threshold-line::after {
  content: '';
  flex: 1;
  max-width: 120px;
  height: 1px;
  background: linear-gradient(
    to right,
    transparent,
    var(--stone),
    transparent
  );
}

.threshold-dot {
  display: block;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--stone);
  margin: 0 var(--space-sm);
  flex-shrink: 0;
}

/* ═══════════════════════════════════════════════
   HERO
   ═══════════════════════════════════════════════ */
.hero {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-lg) var(--space-md);
  position: relative;
  background:
    radial-gradient(ellipse at 50% 20%, rgba(138, 155, 126, 0.06) 0%, transparent 60%),
    radial-gradient(ellipse at 50% 80%, rgba(214, 207, 198, 0.15) 0%, transparent 50%),
    var(--bg);
}

.hero-inner {
  animation: hero-enter 1.8s cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes hero-enter {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ─── Threshold Arch ─── */
.threshold-arch {
  width: 80px;
  height: 140px;
  border: 1px solid var(--stone);
  border-bottom: none;
  border-radius: 40px 40px 0 0;
  margin: 0 auto var(--space-lg);
  position: relative;
  animation: arch-draw 2.4s cubic-bezier(0.16, 1, 0.3, 1) 0.3s both;
}

.threshold-arch::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 1px;
  height: 24px;
  background: linear-gradient(to bottom, var(--stone), transparent);
}

@keyframes arch-draw {
  from {
    opacity: 0;
    transform: scaleY(0.7);
    transform-origin: bottom;
  }
  to {
    opacity: 1;
    transform: scaleY(1);
    transform-origin: bottom;
  }
}

/* ─── Wordmark ─── */
.wordmark {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(2.8rem, 8vw, 5.5rem);
  letter-spacing: 0.35em;
  text-indent: 0.35em;
  color: var(--text);
  margin-bottom: var(--space-sm);
  line-height: 1;
}

/* ─── Tagline ─── */
.tagline {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--text-secondary);
  letter-spacing: 0.06em;
  margin-bottom: var(--space-lg);
}

/* ═══════════════════════════════════════════════
   EMAIL FORM
   ═══════════════════════════════════════════════ */
.email-form {
  max-width: 440px;
  margin: 0 auto;
}

.form-group {
  display: flex;
  gap: 0;
  border: 1px solid var(--stone);
  border-radius: 6px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(8px);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-group:focus-within {
  border-color: var(--sage);
  box-shadow: 0 0 0 3px rgba(138, 155, 126, 0.12);
}

.form-group input {
  flex: 1;
  padding: 0.875rem 1.25rem;
  border: none;
  background: transparent;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--text);
  outline: none;
  min-width: 0;
}

.form-group input::placeholder {
  color: var(--text-tertiary);
}

.form-group button {
  padding: 0.875rem 1.5rem;
  border: none;
  background: var(--sage);
  color: #fff;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.3s ease;
}

.form-group button:hover {
  background: var(--sage-dark);
}

.form-group button:active {
  transform: scale(0.98);
}

.form-note {
  font-size: 0.8rem;
  color: var(--text-tertiary);
  margin-top: var(--space-xs);
  letter-spacing: 0.02em;
}

.form-success {
  padding: var(--space-sm) 0;
}

.form-success p {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-style: italic;
  color: var(--sage-dark);
}

/* Hidden state */
.email-form.submitted .form-group,
.email-form.submitted .form-note {
  display: none;
}

.email-form.submitted .form-success {
  display: block !important;
}

/* ═══════════════════════════════════════════════
   CORE IDEA
   ═══════════════════════════════════════════════ */
.core-idea {
  padding-bottom: var(--space-xl);
}

.core-idea .container {
  text-align: center;
}

.lead {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  font-weight: 400;
  line-height: 1.5;
  color: var(--text);
  margin-bottom: var(--space-md);
}

.body-text {
  font-weight: 300;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto var(--space-md);
  line-height: 1.8;
}

.emphasis {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.5vw, 1.6rem);
  font-weight: 400;
  font-style: italic;
  color: var(--sage-dark);
  letter-spacing: 0.01em;
  line-height: 1.6;
}

/* ═══════════════════════════════════════════════
   PILLARS
   ═══════════════════════════════════════════════ */
.pillars {
  padding-bottom: var(--space-xl);
}

.pillar {
  position: relative;
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--fog);
}

.pillar:last-child {
  border-bottom: none;
}

.pillar-number {
  display: block;
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 300;
  color: var(--text-tertiary);
  letter-spacing: 0.15em;
  margin-bottom: var(--space-sm);
}

.pillar h2 {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  font-weight: 400;
  color: var(--text);
  margin-bottom: var(--space-sm);
  line-height: 1.35;
}

.pillar p {
  font-weight: 300;
  color: var(--text-secondary);
  max-width: 580px;
  line-height: 1.8;
}

/* ═══════════════════════════════════════════════
   CLOSING
   ═══════════════════════════════════════════════ */
.closing {
  padding-bottom: var(--space-xl);
  text-align: center;
}

.closing-statement {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.5vw, 2.2rem);
  font-weight: 300;
  line-height: 1.55;
  color: var(--text);
  max-width: 620px;
  margin: 0 auto var(--space-md);
  border: none;
  padding: 0;
  quotes: none;
}

.coming-soon {
  font-size: 0.95rem;
  font-weight: 400;
  color: var(--sage);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.8rem;
}

/* ═══════════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════════ */
.footer {
  padding-bottom: var(--space-xl);
  text-align: center;
}

.footer-wordmark {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: 1.4rem;
  letter-spacing: 0.3em;
  text-indent: 0.3em;
  color: var(--text-tertiary);
  margin-bottom: var(--space-md);
}

.footer .email-form {
  margin-bottom: var(--space-lg);
}

.social-links {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  color: var(--text-tertiary);
  transition: color 0.3s ease, background 0.3s ease;
}

.social-link:hover {
  color: var(--text);
  background: var(--fog);
}

.copyright {
  font-size: 0.8rem;
  color: var(--text-tertiary);
  letter-spacing: 0.03em;
}

/* ═══════════════════════════════════════════════
   SCROLL REVEAL ANIMATIONS
   ═══════════════════════════════════════════════ */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.9s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.9s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger pillar reveals */
.pillar.reveal:nth-child(2) { transition-delay: 0.08s; }
.pillar.reveal:nth-child(3) { transition-delay: 0.16s; }
.pillar.reveal:nth-child(4) { transition-delay: 0.24s; }

/* ═══════════════════════════════════════════════
   REDUCED MOTION
   ═══════════════════════════════════════════════ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }

  html {
    scroll-behavior: auto;
  }
}

/* ═══════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════ */
@media (max-width: 600px) {
  .form-group {
    flex-direction: column;
  }

  .form-group button {
    border-top: 1px solid var(--fog);
  }

  .threshold-arch {
    width: 60px;
    height: 100px;
    border-radius: 30px 30px 0 0;
    margin-bottom: var(--space-md);
  }

  .pillar {
    padding: var(--space-md) 0;
  }

  .threshold-line {
    padding: var(--space-md) 0;
  }
}