/* ==========================================================================
   Excellent MedTech — Global Design System
   Brand: ExcellentMedTech.com
   Version: 1.0.0
   ========================================================================== */

/* ---------- Design Tokens ---------- */
:root {
  /* Brand Colors */
  --c-primary-900: #061B3A;
  --c-primary-800: #0A2540;
  --c-primary-700: #0E3057;
  --c-primary-600: #133E73;
  --c-primary-500: #1A4F8F;
  --c-primary-400: #3872B0;
  --c-primary-300: #6F9AC8;
  --c-primary-200: #B5CDE5;
  --c-primary-100: #DCE8F4;
  --c-primary-50:  #F0F6FB;

  --c-accent-700: #008099;
  --c-accent-600: #00A1BE;
  --c-accent-500: #00B4D8;
  --c-accent-400: #36C7E4;
  --c-accent-300: #7DDDEF;
  --c-accent-200: #B6EAF6;
  --c-accent-100: #E1F4FA;

  --c-ink-900: #0B1424;
  --c-ink-800: #1A2333;
  --c-ink-700: #2D3748;
  --c-ink-600: #4A5568;
  --c-ink-500: #718096;
  --c-ink-400: #A0AEC0;
  --c-ink-300: #CBD5E0;
  --c-ink-200: #E2E8F0;
  --c-ink-100: #EDF2F7;
  --c-ink-50:  #F7FAFC;

  --c-success: #10B981;
  --c-warning: #F59E0B;
  --c-danger:  #EF4444;
  --c-info:    #3B82F6;

  /* Surface */
  --bg-page: #FFFFFF;
  --bg-soft: #F7FAFC;
  --bg-tint: #F0F6FB;
  --bg-dark: #061B3A;
  --bg-card: #FFFFFF;

  --text-default: #1A2333;
  --text-muted:   #4A5568;
  --text-faint:   #718096;
  --text-invert:  #FFFFFF;

  /* Border */
  --border-soft:  #E2E8F0;
  --border-mid:   #CBD5E0;
  --border-strong:#A0AEC0;

  /* Spacing scale (8-pt) */
  --s-0:  0;
  --s-1:  4px;
  --s-2:  8px;
  --s-3:  12px;
  --s-4:  16px;
  --s-5:  20px;
  --s-6:  24px;
  --s-7:  32px;
  --s-8:  40px;
  --s-9:  48px;
  --s-10: 64px;
  --s-11: 80px;
  --s-12: 96px;
  --s-13: 128px;

  /* Radius */
  --r-sm: 4px;
  --r-md: 8px;
  --r-lg: 12px;
  --r-xl: 16px;
  --r-2xl: 24px;
  --r-full: 9999px;

  /* Shadow */
  --shadow-xs: 0 1px 2px rgba(11,20,36,.04);
  --shadow-sm: 0 1px 3px rgba(11,20,36,.06), 0 1px 2px rgba(11,20,36,.04);
  --shadow-md: 0 4px 6px -1px rgba(11,20,36,.08), 0 2px 4px -1px rgba(11,20,36,.04);
  --shadow-lg: 0 10px 15px -3px rgba(11,20,36,.10), 0 4px 6px -2px rgba(11,20,36,.04);
  --shadow-xl: 0 20px 25px -5px rgba(11,20,36,.10), 0 10px 10px -5px rgba(11,20,36,.04);
  --shadow-2xl:0 25px 50px -12px rgba(11,20,36,.20);
  --shadow-glow: 0 0 0 6px rgba(0,180,216,.18);

  /* Layout */
  --container-max: 1280px;
  --container-narrow: 960px;
  --container-wide: 1440px;
  --header-h: 76px;

  /* Type */
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-display: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", Consolas, "Liberation Mono", Menlo, monospace;

  /* Motion */
  --ease: cubic-bezier(.2,.7,.2,1);
  --ease-out: cubic-bezier(.16,1,.3,1);
  --t-fast: 160ms;
  --t-med: 240ms;
  --t-slow: 420ms;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-default);
  background: var(--bg-page);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
img, svg, video, canvas { max-width: 100%; height: auto; display: block; }
a { color: var(--c-primary-700); text-decoration: none; transition: color var(--t-fast) var(--ease); }
a:hover { color: var(--c-accent-600); }
button { font: inherit; cursor: pointer; border: 0; background: transparent; color: inherit; }
input, textarea, select { font: inherit; color: inherit; }
ul, ol { padding-left: 1.4em; }
hr { border: 0; border-top: 1px solid var(--border-soft); margin: var(--s-7) 0; }

::selection { background: var(--c-accent-200); color: var(--c-primary-900); }

/* ---------- Typography ---------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--c-ink-900);
  line-height: 1.18;
  letter-spacing: -0.012em;
  margin: 0 0 var(--s-4) 0;
}
h1 { font-size: clamp(2.2rem, 4.6vw, 3.6rem); letter-spacing: -0.022em; line-height: 1.08; }
h2 { font-size: clamp(1.8rem, 3.4vw, 2.6rem); letter-spacing: -0.018em; }
h3 { font-size: clamp(1.35rem, 2.2vw, 1.7rem); }
h4 { font-size: 1.15rem; }
h5 { font-size: 1rem; }
h6 { font-size: .9rem; text-transform: uppercase; letter-spacing: .12em; color: var(--c-ink-500); }

p { margin: 0 0 var(--s-4) 0; }
p.lead { font-size: 1.15rem; color: var(--text-muted); line-height: 1.65; }

.eyebrow {
  display: inline-block;
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--c-accent-700);
  margin-bottom: var(--s-3);
}
.eyebrow.on-dark { color: var(--c-accent-300); }

.text-muted { color: var(--text-muted); }
.text-faint { color: var(--text-faint); }
.text-accent { color: var(--c-accent-600); }
.text-primary { color: var(--c-primary-700); }
.text-center { text-align: center; }

/* ---------- Layout ---------- */
.container { max-width: var(--container-max); margin: 0 auto; padding: 0 var(--s-6); }
.container.narrow { max-width: var(--container-narrow); }
.container.wide { max-width: var(--container-wide); }

.section { padding: clamp(var(--s-10), 7vw, var(--s-12)) 0; }
.section.tight { padding: var(--s-9) 0; }
.section.soft { background: var(--bg-soft); }
.section.tint { background: var(--bg-tint); }
.section.dark {
  background: var(--bg-dark);
  color: rgba(255,255,255,.88);
}
.section.dark h1, .section.dark h2, .section.dark h3, .section.dark h4 { color: #fff; }

.grid { display: grid; gap: var(--s-6); }
.grid-2 { grid-template-columns: repeat(2, minmax(0,1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0,1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0,1fr)); }
@media (max-width: 960px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}
@media (max-width: 1100px) and (min-width: 961px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, minmax(0,1fr)); }
}

.flex { display: flex; gap: var(--s-4); }
.flex-between { display: flex; justify-content: space-between; align-items: center; gap: var(--s-4); }
.flex-center { display: flex; justify-content: center; align-items: center; }
.items-start { align-items: flex-start; }
.items-center { align-items: center; }
.flex-wrap { flex-wrap: wrap; }
.gap-2 { gap: var(--s-2); } .gap-3 { gap: var(--s-3); } .gap-4 { gap: var(--s-4); }
.gap-5 { gap: var(--s-5); } .gap-6 { gap: var(--s-6); }
.mt-2 { margin-top: var(--s-2); } .mt-3 { margin-top: var(--s-3); } .mt-4 { margin-top: var(--s-4); }
.mt-6 { margin-top: var(--s-6); } .mt-8 { margin-top: var(--s-8); } .mt-10 { margin-top: var(--s-10); }
.mb-2 { margin-bottom: var(--s-2); } .mb-4 { margin-bottom: var(--s-4); } .mb-6 { margin-bottom: var(--s-6); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--s-2);
  padding: 12px 22px;
  border-radius: var(--r-md);
  font-weight: 600;
  font-size: .95rem;
  letter-spacing: -.005em;
  border: 1.5px solid transparent;
  transition: all var(--t-fast) var(--ease);
  cursor: pointer;
  white-space: nowrap;
  text-decoration: none;
}
.btn:focus-visible { outline: 3px solid var(--c-accent-300); outline-offset: 2px; }

.btn-primary {
  background: var(--c-primary-800);
  color: #fff;
  border-color: var(--c-primary-800);
}
.btn-primary:hover { background: var(--c-primary-700); border-color: var(--c-primary-700); color: #fff; }

.btn-accent {
  background: var(--c-accent-500);
  color: var(--c-primary-900);
  border-color: var(--c-accent-500);
}
.btn-accent:hover { background: var(--c-accent-600); border-color: var(--c-accent-600); color: var(--c-primary-900); }

.btn-ghost {
  background: transparent;
  color: var(--c-primary-800);
  border-color: var(--border-mid);
}
.btn-ghost:hover { background: var(--c-primary-50); color: var(--c-primary-800); border-color: var(--c-primary-300); }

.btn-ghost-light {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,.4);
}
.btn-ghost-light:hover { background: rgba(255,255,255,.08); color: #fff; border-color: rgba(255,255,255,.7); }

.btn-text { color: var(--c-primary-700); padding: 4px 0; font-weight: 600; }
.btn-text:hover { color: var(--c-accent-600); }

.btn-sm { padding: 8px 14px; font-size: .85rem; }
.btn-lg { padding: 16px 28px; font-size: 1.05rem; }

.btn-arrow::after { content: "→"; margin-left: 4px; transition: transform var(--t-fast) var(--ease); }
.btn-arrow:hover::after { transform: translateX(3px); }

/* ---------- Badges & Tags ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  padding: 4px 10px;
  font-size: .75rem;
  font-weight: 600;
  border-radius: var(--r-full);
  background: var(--c-primary-50);
  color: var(--c-primary-700);
  border: 1px solid var(--c-primary-100);
}
.badge.accent { background: var(--c-accent-100); color: var(--c-accent-700); border-color: var(--c-accent-200); }
.badge.success { background: #DCFCE7; color: #047857; border-color: #BBF7D0; }
.badge.warning { background: #FEF3C7; color: #92400E; border-color: #FDE68A; }
.badge.dark { background: var(--c-primary-800); color: #fff; border-color: var(--c-primary-700); }
.badge.dot::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }

/* ---------- Cards ---------- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--r-xl);
  padding: var(--s-6);
  transition: all var(--t-med) var(--ease);
  position: relative;
}
.card:hover { box-shadow: var(--shadow-lg); transform: translateY(-2px); border-color: var(--c-primary-100); }

.card-flat {
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--r-lg);
  padding: var(--s-6);
}

.card-glass {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--r-xl);
  padding: var(--s-6);
  backdrop-filter: blur(8px);
  color: #fff;
}

.card-feature {
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
  padding: var(--s-7);
  border-radius: var(--r-xl);
  background: linear-gradient(180deg, #fff 0%, var(--c-primary-50) 100%);
  border: 1px solid var(--c-primary-100);
}

/* ---------- Utilities ---------- */
.divider { height: 1px; background: var(--border-soft); margin: var(--s-7) 0; }

.kbd {
  font-family: var(--font-mono);
  font-size: .85em;
  background: var(--c-ink-100);
  border: 1px solid var(--border-soft);
  border-bottom-width: 2px;
  border-radius: var(--r-sm);
  padding: 2px 6px;
}

.code-inline {
  font-family: var(--font-mono);
  font-size: .88em;
  background: var(--c-ink-100);
  border: 1px solid var(--border-soft);
  border-radius: var(--r-sm);
  padding: 1px 6px;
}

.sr-only {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0);
  white-space: nowrap; border: 0;
}

/* Skip link for a11y */
.skip-link {
  position: absolute; top: -50px; left: 8px;
  background: var(--c-primary-800); color: #fff;
  padding: 8px 14px; border-radius: var(--r-md);
  font-weight: 600; z-index: 9999;
  transition: top var(--t-fast) var(--ease);
}
.skip-link:focus { top: 8px; color: #fff; }

/* ---------- Print ---------- */
@media print {
  header, footer, nav, .no-print { display: none !important; }
  body { color: #000; background: #fff; font-size: 11pt; }
  a { color: #000; text-decoration: underline; }
  .section { padding: 1cm 0; }
}

/* ---------- Reduced Motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
}