/* ==========================================================================
   LumeVero — SYSTEM DESIGN TOKENS & BASE STYLES
   ========================================================================== */

:root {
  --bg-dark: #030507;
  --bg-dark-elevated: #0a0d12;
  --surface-dark: #0f131a;
  --surface-dark-hover: #161b24;
  --surface-border: rgba(255, 255, 255, 0.08);
  --surface-border-glow: rgba(0, 170, 85, 0.35);

  --accent-green: #00aa55;
  --accent-green-hover: #009148;
  --accent-green-glow: rgba(0, 170, 85, 0.25);
  --accent-green-dim: rgba(0, 170, 85, 0.12);

  --accent-cyan: #00E5FF;
  --text-main: #FFFFFF;
  --text-muted: #94A3B8;
  --text-dim: #64748B;

  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --container-max-width: 1280px;
  --header-height: 90px;
}

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

html {
  scroll-behavior: smooth;
  scroll-snap-type: y proximity;
  scroll-padding-top: var(--header-height);
  font-size: 16px;
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  overflow-x: hidden;
  background: var(--bg-dark);
}

.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-main);
  line-height: 1.15;
}

p {
  color: var(--text-muted);
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

/* ==========================================================================
   SECTION SLIDE & SNAP TRANSITIONS
   ========================================================================== */

section {
  scroll-snap-align: start;
  scroll-snap-stop: normal;
  transition: opacity 0.75s cubic-bezier(0.16, 1, 0.3, 1), 
              transform 0.75s cubic-bezier(0.16, 1, 0.3, 1), 
              filter 0.75s ease;
  will-change: transform, opacity, filter;
}

section.section-slide-off {
  opacity: 0.15;
  transform: translateY(50px) scale(0.985);
  filter: blur(4px);
}

section.section-slide-in {
  opacity: 1;
  transform: translateY(0) scale(1);
  filter: blur(0px);
}

/* Staggered entrance for section contents */
section .section-header,
section .gpu-card-grid,
section .timeline-steps,
section .chart-panel,
section .faq-list,
section .calculator-wrapper,
section .contact-wrapper {
  transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: transform, opacity;
}

section.section-slide-off .section-header {
  transform: translateY(35px);
  opacity: 0.2;
}

section.section-slide-off .gpu-card-grid,
section.section-slide-off .timeline-steps,
section.section-slide-off .chart-panel,
section.section-slide-off .faq-list,
section.section-slide-off .calculator-wrapper,
section.section-slide-off .contact-wrapper {
  transform: translateY(50px);
  opacity: 0.1;
}

section.section-slide-in .section-header,
section.section-slide-in .gpu-card-grid,
section.section-slide-in .timeline-steps,
section.section-slide-in .chart-panel,
section.section-slide-in .faq-list,
section.section-slide-in .calculator-wrapper,
section.section-slide-in .contact-wrapper {
  transform: translateY(0);
  opacity: 1;
}

/* ==========================================================================
   GLOBAL BUTTON TEXT COLOR — texte blanc sur tous les boutons
   ========================================================================== */

button,
input[type="submit"],
input[type="button"],
input[type="reset"],
[class*="btn-"] {
  color: #ffffff !important;
}