/* ============================================================
   Halpo marketing site — "Morning Light" (DESIGN.md v2)
   Ink #1f2024 · Coral #ff6a52 · cool-light ground #f1f1f5
   The Aura spectrum is reserved for the AI section only.
   ============================================================ */

:root {
  --ink: #1f2024;
  --ink-soft: #43444a;
  --muted: #78797f;
  --coral: #ff6a52;
  --coral-deep: #e8563f;
  --green: #26b37a;
  --blue: #3b8ef0;
  --gold: #db8a2e;
  --violet: #8b7cf6;
  --ground: #f1f1f5;
  --card: #ffffff;
  --card-low: #fafafc;
  --hairline: rgba(23, 30, 36, 0.08);
  --hairline-strong: rgba(23, 30, 36, 0.14);
  --shadow-soft: 0 1px 2px rgba(23, 30, 36, 0.05), 0 8px 28px rgba(23, 30, 36, 0.07);
  --shadow-lift: 0 2px 6px rgba(23, 30, 36, 0.08), 0 24px 64px rgba(23, 30, 36, 0.14);
  --radius-card: 22px;
  --radius-pill: 999px;
  --aura: linear-gradient(100deg, #ff6a52, #ff5fa8 28%, #8b7cf6 55%, #4f9bff 78%, #3dd6c4);
  --nav-bg: rgba(241, 241, 245, 0.82);
  --frame: #1f2024;
  --max: 1120px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #f1f2f4;
    --ink-soft: #c9cad0;
    --muted: #9a9ba2;
    --ground: #1a1b1f;
    --card: #232428;
    --card-low: #202126;
    --hairline: rgba(241, 242, 244, 0.09);
    --hairline-strong: rgba(241, 242, 244, 0.16);
    --shadow-soft: 0 1px 2px rgba(0, 0, 0, 0.4), 0 8px 28px rgba(0, 0, 0, 0.35);
    --shadow-lift: 0 2px 6px rgba(0, 0, 0, 0.5), 0 24px 64px rgba(0, 0, 0, 0.5);
    --nav-bg: rgba(26, 27, 31, 0.82);
    --frame: #0c0d0f;
  }
  .logo-light { display: none; }
  .logo-dark { display: inline-block; }
}
@media (prefers-color-scheme: light), (prefers-color-scheme: no-preference) {
  .logo-dark { display: none; }
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--ground);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }

a { color: inherit; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* ---------- type scale (Morning Light: heavy, optically tight) ---------- */

h1, h2, h3 { font-weight: 700; letter-spacing: -0.022em; line-height: 1.08; }

.display {
  font-size: clamp(2.6rem, 6.4vw, 4.2rem);
  letter-spacing: -0.026em;
  line-height: 1.04;
}

h2 { font-size: clamp(1.8rem, 3.6vw, 2.5rem); }
h3 { font-size: 1.25rem; letter-spacing: -0.012em; }

.lede {
  font-size: clamp(1.05rem, 1.8vw, 1.25rem);
  color: var(--ink-soft);
  max-width: 40em;
}

.kicker {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 14px;
}
.kicker.coral { color: var(--coral); }
.kicker.green { color: var(--green); }
.kicker.blue { color: var(--blue); }
.kicker.violet { color: var(--violet); }

p + p { margin-top: 1em; }

/* ---------- nav ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--nav-bg);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--hairline);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.nav-logo img { height: 30px; width: auto; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
  font-size: 0.92rem;
  font-weight: 500;
}

.nav-links a { text-decoration: none; color: var(--ink-soft); transition: color 0.15s ease; }
.nav-links a:hover { color: var(--ink); }
.nav-links a.active { color: var(--ink); font-weight: 700; }
.nav-links a.btn-primary, .nav-links a.btn-primary:hover { color: var(--ground); }
@media (prefers-color-scheme: dark) {
  .nav-links a.btn-primary, .nav-links a.btn-primary:hover { color: #1a1b1f; }
}

@media (max-width: 640px) {
  .nav-links li.hide-mobile { display: none; }
  .nav-links { gap: 18px; }
}

/* ---------- buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  letter-spacing: -0.006em;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.btn-primary { background: var(--ink); color: var(--ground); box-shadow: var(--shadow-soft); }
.btn-primary:hover { transform: translateY(-1px); box-shadow: var(--shadow-lift); }

@media (prefers-color-scheme: dark) {
  .btn-primary { background: #f1f2f4; color: #1a1b1f; }
}

.btn-ghost {
  border: 1px solid var(--hairline-strong);
  color: var(--ink);
  background: transparent;
}
.btn-ghost:hover { background: var(--card); }

.btn .arrow { color: var(--coral); }

.btn-sm { padding: 9px 18px; font-size: 0.86rem; }

/* ---------- hero ---------- */

.hero { padding: 88px 0 40px; text-align: center; position: relative; overflow: hidden; }

.hero .lede { margin: 22px auto 34px; }

.hero-ctas { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

.hero-note { margin-top: 18px; font-size: 0.85rem; color: var(--muted); }

/* soft coral bloom behind hero — brand accent, not the Aura */
.hero::before {
  content: "";
  position: absolute;
  top: -240px;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 560px;
  background: radial-gradient(ellipse at center, rgba(255, 106, 82, 0.10), transparent 65%);
  pointer-events: none;
}

/* ---------- phone frames ---------- */

.phone-row {
  display: flex;
  justify-content: center;
  align-items: flex-end;
  gap: clamp(12px, 3vw, 40px);
  padding: 56px 24px 0;
  perspective: 1400px;
}

.phone {
  width: clamp(200px, 24vw, 290px);
  border-radius: clamp(30px, 3.4vw, 44px);
  background: var(--frame);
  padding: clamp(8px, 0.9vw, 11px);
  box-shadow: var(--shadow-lift);
  flex-shrink: 0;
}

.phone img { border-radius: clamp(23px, 2.7vw, 35px); width: 100%; }

.phone-row .phone:nth-child(1) { transform: translateY(34px) rotate(-3deg); }
.phone-row .phone:nth-child(3) { transform: translateY(34px) rotate(3deg); }
.phone-row .phone:nth-child(2) { z-index: 2; }

@media (max-width: 720px) {
  .phone-row .phone:nth-child(3) { display: none; }
}

/* ---------- persona strip ---------- */

.strip { padding: 84px 0 20px; text-align: center; }

.strip-grid {
  margin-top: 40px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

@media (max-width: 860px) { .strip-grid { grid-template-columns: repeat(2, 1fr); } }

.strip-card {
  background: var(--card);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-card);
  padding: 26px 22px;
  text-align: left;
  box-shadow: var(--shadow-soft);
}

.strip-card .emoji { font-size: 1.6rem; }

.strip-card h3 { margin: 12px 0 6px; font-size: 1.02rem; }

.strip-card p { font-size: 0.88rem; color: var(--muted); line-height: 1.5; }

/* ---------- feature rows ---------- */

.features { padding: 60px 24px; }

.feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(36px, 6vw, 84px);
  align-items: center;
  padding: 64px 0;
}

.feature.media-first .feature-media { order: -1; }

@media (max-width: 820px) {
  .feature { grid-template-columns: 1fr; padding: 44px 0; }
  .feature.media-first .feature-media { order: 0; }
}

.feature-media { display: flex; justify-content: center; }

.feature h2 { margin-bottom: 16px; }

.feature .body { color: var(--ink-soft); max-width: 34em; }

.feature ul { margin-top: 18px; list-style: none; }

.feature li {
  padding-left: 26px;
  position: relative;
  margin-bottom: 10px;
  color: var(--ink-soft);
  font-size: 0.96rem;
}

.feature li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.44em;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--dot, var(--coral));
}

.feature li.dot-green { --dot: var(--green); }
.feature li.dot-blue { --dot: var(--blue); }
.feature li.dot-gold { --dot: var(--gold); }
.feature li.dot-violet { --dot: var(--violet); }

/* ---------- the Aura section (AI — the ONLY place the spectrum appears) ---------- */

.aura-section {
  position: relative;
  border-radius: calc(var(--radius-card) + 8px);
  background: var(--card);
  border: 1px solid transparent;
  background-clip: padding-box;
  padding: clamp(40px, 6vw, 72px);
  margin: 40px 0 80px;
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}

.aura-section::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1.5px;
  background: var(--aura);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0.9;
  pointer-events: none;
}

.aura-section::after {
  content: "";
  position: absolute;
  top: -140px;
  right: -120px;
  width: 480px;
  height: 480px;
  background: radial-gradient(circle, rgba(139, 124, 246, 0.14), transparent 62%);
  pointer-events: none;
}

.aura-grad-text {
  background: var(--aura);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.aura-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 40px;
}

@media (max-width: 820px) { .aura-grid { grid-template-columns: 1fr; } }

.aura-grid h3 { margin-bottom: 8px; }

.aura-grid p { font-size: 0.93rem; color: var(--ink-soft); }

.aura-rule {
  margin-top: 44px;
  padding-top: 24px;
  border-top: 1px solid var(--hairline);
  font-size: 0.95rem;
  color: var(--muted);
  max-width: 46em;
}

/* ---------- dark-mode showcase ---------- */

.dark-strip {
  background: #1a1b1f;
  color: #f1f2f4;
  padding: 84px 0 0;
  text-align: center;
  overflow: hidden;
}

.dark-strip .lede { color: #9a9ba2; margin: 18px auto 0; }

.dark-strip .phone { background: #000; box-shadow: 0 24px 80px rgba(0, 0, 0, 0.6); }

.dark-strip .phone-row { padding-bottom: 72px; }

/* ---------- CTA band ---------- */

.cta-band { text-align: center; padding: 110px 0; }

.cta-band .lede { margin: 18px auto 30px; }

/* ---------- footer ---------- */

footer {
  border-top: 1px solid var(--hairline);
  padding: 44px 0 56px;
  font-size: 0.88rem;
  color: var(--muted);
}

.foot-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.foot-inner img { height: 24px; width: auto; opacity: 0.85; }

.foot-links { display: flex; gap: 22px; list-style: none; }

.foot-links a { text-decoration: none; }
.foot-links a:hover { color: var(--ink); }

/* ---------- inner pages (about / investors) ---------- */

.page-hero { padding: 92px 24px 36px; }

.page-hero .lede { margin-top: 20px; }

.prose { max-width: 46em; padding: 24px 24px 80px; }

.prose h2 { margin: 52px 0 16px; font-size: 1.6rem; }

.prose p, .prose li { color: var(--ink-soft); font-size: 1.02rem; }

.prose ul { padding-left: 1.2em; margin-top: 0.8em; }

.prose li { margin-bottom: 0.5em; }

.prose .pull {
  border-left: 3px solid var(--coral);
  padding: 6px 0 6px 22px;
  margin: 36px 0;
  font-size: 1.28rem;
  font-weight: 700;
  letter-spacing: -0.018em;
  line-height: 1.3;
  color: var(--ink);
}

.card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin: 30px 0;
}

@media (max-width: 720px) { .card-grid { grid-template-columns: 1fr; } }

.info-card {
  background: var(--card);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-card);
  padding: 26px;
  box-shadow: var(--shadow-soft);
}

.info-card h3 { margin-bottom: 8px; }

.info-card p { font-size: 0.93rem; color: var(--ink-soft); }

.contact-card {
  background: var(--card);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-soft);
  padding: clamp(30px, 5vw, 48px);
  margin: 40px 0 80px;
  text-align: center;
}

.contact-card .email {
  display: inline-block;
  margin-top: 14px;
  font-size: clamp(1.3rem, 3vw, 1.8rem);
  font-weight: 700;
  letter-spacing: -0.018em;
  color: var(--coral);
  text-decoration: none;
}

.contact-card .email:hover { color: var(--coral-deep); }

.contact-card p.small { margin-top: 14px; font-size: 0.88rem; color: var(--muted); }

/* ---------- beta signup form ---------- */

.signup-card {
  max-width: 560px;
  margin: 40px auto 0;
  background: var(--card);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-soft);
  padding: clamp(26px, 4vw, 40px);
  text-align: left;
}

.signup-field { margin-bottom: 16px; }

.signup-field label {
  display: block;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}

.signup-field input[type="email"],
.signup-field select {
  width: 100%;
  padding: 13px 16px;
  border-radius: 14px;
  border: 1px solid var(--hairline-strong);
  background: var(--card-low);
  color: var(--ink);
  font: inherit;
  font-size: 0.98rem;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.signup-field input[type="email"]:focus,
.signup-field select:focus {
  outline: none;
  border-color: var(--coral);
  box-shadow: 0 0 0 3px rgba(255, 106, 82, 0.18);
}

.signup-consent {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--ink-soft);
  margin: 18px 0 20px;
}

.signup-consent input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  accent-color: var(--coral);
  flex-shrink: 0;
}

.signup-consent a { color: var(--coral); font-weight: 700; text-decoration: none; }
.signup-consent a:hover { text-decoration: underline; }

.signup-card .btn { width: 100%; justify-content: center; }
.signup-card .btn[disabled] { opacity: 0.45; pointer-events: none; }

/* honeypot: visually gone, still fillable by naive bots */
.signup-hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

.signup-msg { margin-top: 14px; font-size: 0.92rem; text-align: center; display: none; }
.signup-msg.show { display: block; }
.signup-msg.ok { color: var(--green); font-weight: 700; }
.signup-msg.err { color: var(--gold); }

.signup-done { text-align: center; padding: 18px 0 6px; }
.signup-done .big { font-size: 2.2rem; }
.signup-done h3 { margin: 10px 0 6px; }
.signup-done p { color: var(--ink-soft); font-size: 0.95rem; }

/* ---------- reveal-on-scroll (progressive enhancement) ---------- */

@media (prefers-reduced-motion: no-preference) {
  .reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.6s ease, transform 0.6s ease; }
  .reveal.in { opacity: 1; transform: none; }
}