/* ============================================================
   BASE.CSS — CSS Variables, Reset, Typography, Global Utilities
   Kinzi Pharma Landing Page
   ============================================================ */

:root {
  /* Brand Colors */
  --black:       #0d0d0d;
  --white:       #ffffff;
  --off:         #f7f7f5;
  --off2:        #f0f0ec;
  --gray:        #8a8a85;
  --gray-light:  #e8e8e4;

  /* Accent Colors */
  --teal:        #0e7c6e;
  --teal-l:      #13a593;
  --orange:      #e8500a;
  --green-card:  #c8f0d0;
  --green-light: #e8f8e8;
  --lime:        #cfe83a;

  /* Borders */
  --border: rgba(0, 0, 0, 0.08);

  /* Fonts */
  --fd: 'Instrument Serif', serif;
  --fb: 'DM Sans', sans-serif;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--fb);
  background: #fff;
  color: var(--black);
  overflow-x: hidden;
}

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

a {
  text-decoration: none;
}

/* ── Scrollbar ── */
::-webkit-scrollbar        { width: 3px; }
::-webkit-scrollbar-track  { background: #f0f0ec; }
::-webkit-scrollbar-thumb  { background: var(--teal); border-radius: 3px; }

/* ── Scroll Reveal Classes ── */
.reveal {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

.rl {
  opacity: 0;
  transform: translateX(-36px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.rl.visible { opacity: 1; transform: translateX(0); }

.rr {
  opacity: 0;
  transform: translateX(36px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.rr.visible { opacity: 1; transform: translateX(0); }

/* ── Delay Helpers ── */
.d1 { transition-delay: 0.1s !important; }
.d2 { transition-delay: 0.2s !important; }
.d3 { transition-delay: 0.3s !important; }
.d4 { transition-delay: 0.4s !important; }
.d5 { transition-delay: 0.5s !important; }

/* ── Section Typography ── */
.stitle {
  font-family: var(--fd);
  font-size: clamp(26px, 4vw, 52px);
  font-weight: 400;
  line-height: 1.1;
  color: var(--black);
  margin-bottom: 12px;
}
.stitle .acc { color: var(--orange); }
.stitle .mt  { color: #c0bdb5; }

.sdesc {
  font-size: 14px;
  font-weight: 300;
  line-height: 1.75;
  color: var(--gray);
}

.ssup {
  font-size: 13px;
  color: var(--gray);
  margin-bottom: 10px;
}

/* ── Reusable Buttons ── */
.bdark {
  padding: 12px 24px;
  background: var(--black);
  color: #fff;
  border-radius: 50px;
  font-size: 13px;
  font-weight: 500;
  transition: background 0.2s, transform 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: none;
  cursor: pointer;
}
.bdark:hover { background: var(--teal); transform: translateY(-2px); }

.bghost {
  padding: 12px 24px;
  background: rgba(255, 255, 255, 0.5);
  color: var(--black);
  border: 1px solid rgba(14, 124, 110, 0.25);
  border-radius: 50px;
  font-size: 13px;
  font-weight: 400;
  transition: border-color 0.2s, background 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
}
.bghost:hover { border-color: var(--teal); background: rgba(255,255,255,0.8); }

.bpill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border: 1.5px solid var(--black);
  border-radius: 50px;
  font-size: 13px;
  font-weight: 500;
  color: var(--black);
  transition: background 0.2s, color 0.2s;
}
.bpill:hover { background: var(--black); color: #fff; }

/* ── Keyframe Animations ── */
@keyframes fU { to { opacity: 1; transform: translateY(0); } }
@keyframes fI { to { opacity: 1; } }
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }
@keyframes waB { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-5px); } }
@keyframes pulse { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.4; transform: scale(0.7); } }
@keyframes modalIn {
  from { opacity: 0; transform: translateY(28px) scale(0.97); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes overlayIn { from { opacity: 0; } to { opacity: 1; } }