/* Alpha-Stim hi-fi homepage. design tokens + base styles */

:root {
  /* Alpha-Stim palette. anchored on their teal */
  --teal-900: #0F3B47;
  --teal-800: #154E5E;
  --teal-700: #1B6478;
  --teal-600: #2A8094;
  --teal-500: #3FA0B5;
  --teal-100: #DCEEF1;
  --teal-50:  #EEF6F8;
  --navy:     #0B2530;

  --cream:    #F7F4ED;   /* warm off-white for section variety */
  --bone:     #FBF9F4;
  --paper:    #FFFFFF;

  --ink:      #0E1A21;
  --body:     #2B3A42;
  --muted:    #5E6E76;
  --hairline: #E4E2DA;

  --accent:   #E97F3D;   /* warm coral for CTAs / urgency moments */
  --accent-ink: #C45F22;

  --ok:       #1F8A6E;
  --warn:     #C0392B;

  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 22px;
  --r-pill: 999px;

  --shadow-sm: 0 1px 2px rgba(11,37,48,0.06), 0 1px 1px rgba(11,37,48,0.04);
  --shadow-md: 0 8px 24px rgba(11,37,48,0.08), 0 2px 6px rgba(11,37,48,0.05);
  --shadow-lg: 0 24px 60px rgba(11,37,48,0.16), 0 8px 18px rgba(11,37,48,0.08);

  --maxw: 1240px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  font-feature-settings: "ss01", "cv11";
  color: var(--body);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-size: 17px;
  line-height: 1.55;
}

h1, h2, h3, h4 {
  font-family: 'Manrope', 'Inter', system-ui, sans-serif;
  color: var(--ink);
  letter-spacing: -0.02em;
  margin: 0;
  text-wrap: balance;
}
h1 { font-weight: 800; }
h2 { font-weight: 800; }
h3 { font-weight: 700; }

p { margin: 0; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }

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

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 28px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-weight: 700;
  font-family: 'Manrope', 'Inter', sans-serif;
  letter-spacing: -0.005em;
  border-radius: var(--r-pill);
  border: 1.5px solid transparent;
  padding: 14px 24px;
  font-size: 16px;
  transition: transform .15s ease, box-shadow .2s ease, background .2s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn-primary { background: var(--teal-700); color: #fff; }
.btn-primary:hover { background: var(--teal-800); }
.btn-accent { background: var(--accent); color: #fff; }
.btn-accent:hover { background: var(--accent-ink); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--ink); }
.btn-ghost:hover { background: var(--ink); color: #fff; }
.btn-light { background: #fff; color: var(--teal-800); border-color: var(--hairline); }
.btn-light:hover { border-color: var(--teal-700); }
.btn-lg { padding: 18px 32px; font-size: 18px; }
.btn-xl { padding: 22px 40px; font-size: 20px; border-radius: var(--r-pill); }

/* Pills / chips */
.chip {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 14px; border-radius: var(--r-pill);
  background: var(--teal-50); color: var(--teal-800);
  font-size: 13px; font-weight: 600; letter-spacing: 0.01em;
}
.chip svg { flex: 0 0 auto; }
.chip-warm { background: #FCEEDF; color: var(--accent-ink); }

/* Section padding */
.section { padding: 96px 0; }
.section-lg { padding: 120px 0; }
.section-sm { padding: 64px 0; }

.eyebrow {
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--teal-700);
}

/* utility */
.lede { font-size: 19px; line-height: 1.55; color: var(--body); max-width: 60ch; }
.muted { color: var(--muted); }
.center { text-align: center; }
.stack { display: flex; flex-direction: column; }
.row { display: flex; }
.gap-8 { gap: 8px; } .gap-12 { gap: 12px; } .gap-16 { gap: 16px; }
.gap-24 { gap: 24px; } .gap-32 { gap: 32px; } .gap-48 { gap: 48px; }

/* Risk reversal row */
.risk-row {
  display: flex; flex-wrap: wrap; gap: 18px 28px;
  justify-content: center; align-items: center;
  font-size: 14px; color: var(--body);
}
.risk-row > div {
  display: inline-flex; align-items: center; gap: 8px; font-weight: 600;
  white-space: nowrap;
}
.risk-row svg { flex: 0 0 auto; }

/* Image placeholder. clearly marked */
.imgph {
  position: relative; overflow: hidden;
  background:
    linear-gradient(135deg, rgba(15,59,71,0.04), rgba(15,59,71,0.01)),
    repeating-linear-gradient(135deg, var(--teal-50) 0 12px, var(--bone) 12px 24px);
  border: 1px dashed var(--teal-500);
  color: var(--teal-800);
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--r-md);
  font-size: 13px; font-weight: 600; letter-spacing: 0.02em;
  text-align: center;
  padding: 12px;
  white-space: nowrap;
}
.imgph::before {
  content: "PLACEHOLDER";
  position: absolute; top: 12px; left: 12px;
  font-size: 10px; letter-spacing: 0.18em;
  background: var(--teal-700); color: #fff;
  padding: 3px 7px; border-radius: 3px;
}

/* photo placeholder. softer, rounded, no dashed border */
.photo {
  position: relative; overflow: hidden;
  border-radius: var(--r-lg);
  background: linear-gradient(160deg, #1B6478 0%, #0F3B47 70%);
  color: #fff;
}
.photo::after {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(circle at 25% 30%, rgba(255,255,255,0.18), transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(255,255,255,0.10), transparent 50%);
}
.photo-label {
  position: absolute; bottom: 14px; left: 14px;
  font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase;
  color: rgba(255,255,255,0.78);
  background: rgba(0,0,0,0.25); padding: 4px 8px; border-radius: 4px;
  z-index: 1;
}

/* card base */
.card {
  background: #fff; border: 1px solid var(--hairline);
  border-radius: var(--r-lg); padding: 28px;
}

/* FDA badge */
.fda-badge {
  display: inline-flex; align-items: center; gap: 10px;
  background: rgba(255,255,255,0.92);
  border: 1px solid rgba(15,59,71,0.16);
  padding: 8px 14px; border-radius: var(--r-pill);
  font-size: 13px; font-weight: 700; color: var(--teal-900);
  letter-spacing: 0.02em;
  backdrop-filter: blur(6px);
  white-space: nowrap;
  flex: 0 0 auto;
}
.chip { white-space: nowrap; flex: 0 0 auto; }
.fda-badge .dot {
  width: 8px; height: 8px; border-radius: 50%; background: var(--ok);
  box-shadow: 0 0 0 3px rgba(31,138,110,0.16);
}

/* Sticky CTA bar */
.sticky-cta {
  position: fixed; left: 0; right: 0; bottom: 0;
  background: var(--navy); color: #fff;
  padding: 14px 28px;
  display: flex; align-items: center; gap: 18px;
  z-index: 50;
  box-shadow: 0 -8px 24px rgba(11,37,48,0.18);
  transform: translateY(100%);
  transition: transform .35s cubic-bezier(.2,.8,.2,1);
}
.sticky-cta.visible { transform: translateY(0); }
.sticky-cta .label { font-weight: 700; font-size: 15px; }
.sticky-cta .sub { font-size: 13px; opacity: 0.78; }
.sticky-cta .spacer { flex: 1; }

/* Stars */
.stars { display: inline-flex; gap: 2px; color: #E0A53A; }
.stars svg { width: 16px; height: 16px; }

@media (max-width: 880px) {
  .section { padding: 72px 0; }
  .section-lg { padding: 88px 0; }
  body { font-size: 16px; }
  .container { padding: 0 20px; }
}