/* ==========================================================================
   DESIGN TOKENS & CORE STYLES - DR. LUIS FERNANDO SAÑUDO PORTILLO
   Apple-grade Cinematic Medical Aesthetics | Dark Mode Excellence
   ========================================================================== */

:root {
  /* Color Palette - Premium Medical Dark Mode */
  --bg-primary: #050505;
  --bg-secondary: #090a0c;
  --bg-elevated: #101114;
  --bg-surface-glass: rgba(16, 17, 20, 0.72);
  --bg-card-glass: rgba(18, 20, 24, 0.65);
  --bg-modal: rgba(10, 11, 14, 0.95);

  /* Typography Colors */
  --text-primary: rgba(255, 255, 255, 0.95);
  --text-secondary: rgba(255, 255, 255, 0.65);
  --text-muted: rgba(255, 255, 255, 0.42);
  --text-dim: rgba(255, 255, 255, 0.25);

  /* Hyaluronic Acid Accents - Sophisticated Icy Cyan & Deep Precision Blue */
  --accent-cyan: #46c7e8;
  --accent-cyan-light: #8be7f5;
  --accent-cyan-deep: #1d7c99;
  --accent-cyan-glow: rgba(70, 199, 232, 0.16);
  --accent-cyan-glow-subtle: rgba(70, 199, 232, 0.08);
  --accent-blue-deep: #176bff;
  --accent-blue-glow: rgba(23, 107, 255, 0.18);

  /* Structural Borders & Separators */
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-medium: rgba(255, 255, 255, 0.14);
  --border-accent: rgba(70, 199, 232, 0.28);
  --border-accent-strong: rgba(70, 199, 232, 0.6);

  /* Typography */
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'SF Mono', SFMono-Regular, ui-monospace, Menlo, Monaco, Consolas, monospace;

  /* Elevations & Shadows */
  --shadow-subtle: 0 4px 24px -1px rgba(0, 0, 0, 0.6);
  --shadow-elevation: 0 12px 48px -4px rgba(0, 0, 0, 0.85);
  --shadow-cyan-glow: 0 0 40px -8px rgba(70, 199, 232, 0.25);
  --shadow-cyan-button: 0 0 24px 0 rgba(70, 199, 232, 0.35);

  /* Spacing */
  --header-height: 72px;
  --container-max: 1280px;
  --container-narrow: 920px;
  --container-compact: 760px;

  /* Transitions */
  --transition-fast: 0.18s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.65s cubic-bezier(0.16, 1, 0.3, 1);
}

/* --------------------------------------------------------------------------
   CSS Reset & Base Rules
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
  color-scheme: dark;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* Custom Minimalist Dark Scrollbar */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.16);
  border-radius: 9999px;
  transition: background var(--transition-fast);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent-cyan);
}

/* Selection */
::selection {
  background-color: rgba(70, 199, 232, 0.35);
  color: #ffffff;
}

/* Layout Utilities */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 2rem;
  padding-right: 2rem;
}

.container-narrow {
  max-width: var(--container-narrow);
}

.container-compact {
  max-width: var(--container-compact);
}

/* Typography Utilities */
.eyebrow {
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.eyebrow::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--accent-cyan);
  box-shadow: 0 0 8px var(--accent-cyan);
}

.headline-hero {
  font-size: clamp(2.4rem, 5.5vw, 4.2rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.035em;
  color: var(--text-primary);
  background: linear-gradient(180deg, #ffffff 0%, rgba(255, 255, 255, 0.82) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.headline-section {
  font-size: clamp(2rem, 3.8vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.headline-stage {
  font-size: clamp(1.8rem, 3.2vw, 2.6rem);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -0.025em;
  color: var(--text-primary);
  margin-bottom: 0.85rem;
}

.subcopy-large {
  font-size: clamp(1.05rem, 1.35vw, 1.25rem);
  font-weight: 400;
  line-height: 1.65;
  color: var(--text-secondary);
}

.subcopy-standard {
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.68;
  color: var(--text-secondary);
}

.caption-subtle {
  font-size: 0.82rem;
  font-weight: 400;
  color: var(--text-muted);
}

/* Glassmorphism Utility */
.glass-panel {
  background: var(--bg-surface-glass);
  backdrop-filter: blur(24px) saturate(160%);
  -webkit-backdrop-filter: blur(24px) saturate(160%);
  border: 1px solid var(--border-subtle);
  border-radius: 20px;
}

.glass-panel:hover {
  border-color: rgba(255, 255, 255, 0.15);
}

/* Button System */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  font-family: var(--font-sans);
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  padding: 0.85rem 1.75rem;
  border-radius: 9999px;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  outline: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-cyan) 0%, #30a9ca 100%);
  color: #050505;
  box-shadow: var(--shadow-cyan-button);
}

.btn-primary:hover {
  transform: translateY(-2px);
  background: linear-gradient(135deg, var(--accent-cyan-light) 0%, #46c7e8 100%);
  box-shadow: 0 0 32px 2px rgba(70, 199, 232, 0.55);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border: 1px solid var(--border-medium);
  backdrop-filter: blur(12px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.28);
  transform: translateY(-2px);
}

.btn-secondary:active {
  transform: translateY(0);
}

.btn-icon {
  width: 18px;
  height: 18px;
  transition: transform var(--transition-fast);
}

.btn:hover .btn-icon {
  transform: translateX(3px);
}

/* Badge Utilities */
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  background: rgba(70, 199, 232, 0.08);
  border: 1px solid rgba(70, 199, 232, 0.22);
  color: var(--accent-cyan);
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.status-pill.neutral {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.12);
  color: var(--text-secondary);
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: currentColor;
  box-shadow: 0 0 8px currentColor;
}