/* ==========================================================================
   WebIA — Design tokens
   ========================================================================== */
:root {
  --bg: #0a0e14;
  --bg-alt: #0d131b;
  --surface: #12181f;
  --surface-2: #171e27;
  --border: rgba(244, 246, 248, 0.08);
  --border-strong: rgba(244, 246, 248, 0.16);
  --text: #f4f6f8;
  --text-muted: #8a91a0;
  --accent: #00ff9c;
  --accent-dark: #00c97a;
  --accent-rgb: 0, 255, 156;
  --accent-2: #ff5c38;
  --accent-2-rgb: 255, 92, 56;

  --font-head: "Space Grotesk", system-ui, -apple-system, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;

  --radius-sm: 8px;
  --radius: 16px;
  --radius-lg: 24px;
  --container: 1180px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --header-h: 72px;
}

/* ==========================================================================
   Reset
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  -webkit-tap-highlight-color: transparent;
}
input, textarea { font: inherit; color: inherit; }
h1, h2, h3 { font-family: var(--font-head); line-height: 1.15; letter-spacing: -0.01em; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
  html { scroll-behavior: auto; }
}

/* ==========================================================================
   Layout helpers
   ========================================================================== */
.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: 1.25rem; }
.section { padding-block: clamp(3.5rem, 8vw, 7rem); }
.section--alt { background: var(--bg-alt); }
.section__lead { max-width: 60ch; color: var(--text-muted); font-size: 1.05rem; margin-top: 0.75rem; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

h2 { font-size: clamp(1.7rem, 4vw, 2.6rem); max-width: 22ch; }

.grid { display: grid; gap: 1.25rem; margin-top: 2.5rem; }
.grid--4 { grid-template-columns: 1fr; }
.grid--pricing { grid-template-columns: 1fr; }
@media (min-width: 640px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--pricing { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .grid--4 { grid-template-columns: repeat(4, 1fr); }
  .grid--pricing { grid-template-columns: repeat(3, 1fr); }
}

.accent-text { color: var(--accent); }

/* ==========================================================================
   Accessibility utilities
   ========================================================================== */
.skip-link {
  position: fixed;
  top: -100%;
  left: 1rem;
  z-index: 10000;
  background: var(--accent);
  color: #04140c;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  transition: top 0.2s var(--ease);
}
.skip-link:focus { top: 1rem; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

/* ==========================================================================
   Progress bar + custom cursor
   ========================================================================== */
.progress-bar {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  z-index: 9999;
  transition: width 0.1s linear;
}

.cursor-dot, .cursor-ring {
  position: fixed;
  top: 0; left: 0;
  pointer-events: none;
  z-index: 9998;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  display: none;
}
.cursor-dot { width: 6px; height: 6px; background: var(--accent); }
.cursor-ring {
  width: 34px; height: 34px;
  border: 1px solid rgba(var(--accent-rgb), 0.5);
  transition: width 0.2s var(--ease), height 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}
.cursor-ring.is-active { width: 54px; height: 54px; background: rgba(var(--accent-rgb), 0.08); border-color: var(--accent); }

@media (hover: hover) and (pointer: fine) {
  .has-custom-cursor .cursor-dot,
  .has-custom-cursor .cursor-ring { display: block; }
  .has-custom-cursor, .has-custom-cursor a, .has-custom-cursor button { cursor: none; }
}

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 500;
  height: var(--header-h);
  display: flex;
  align-items: center;
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease), height 0.3s var(--ease);
}
.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: rgba(10, 14, 20, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.site-header.is-scrolled {
  border-color: var(--border);
  height: 60px;
}
.site-header__inner { display: flex; align-items: center; justify-content: space-between; }

.logo {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 1.05rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  letter-spacing: -0.02em;
}
.logo__mark { color: var(--accent); }
.logo__cursor { color: var(--accent); animation: blink 1s step-end infinite; }
@keyframes blink { 50% { opacity: 0; } }

.nav { display: flex; align-items: center; gap: 2rem; }
.nav__list { display: none; align-items: center; gap: 1.75rem; }
.nav__link {
  position: relative;
  font-size: 0.92rem;
  color: var(--text-muted);
  transition: color 0.2s var(--ease);
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 0; bottom: -6px;
  width: 0; height: 1px;
  background: var(--accent);
  transition: width 0.25s var(--ease);
}
.nav__link:hover, .nav__link.is-active { color: var(--text); }
.nav__link:hover::after, .nav__link.is-active::after { width: 100%; }
.nav__cta { display: none; }

@media (min-width: 900px) {
  .nav__list { display: flex; }
  .nav__cta { display: inline-flex; }
}

.burger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: stretch;
  flex-shrink: 0;
  gap: 5px;
  width: 32px; height: 32px;
  padding: 0;
  z-index: 600;
  touch-action: manipulation;
}
.burger span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--text);
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}
.burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (min-width: 900px) { .burger { display: none; } }

@media (max-width: 899px) {
  .nav {
    position: fixed;
    inset: 0;
    z-index: 550;
    background: var(--bg);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2.5rem;
    overflow-y: auto;
    padding-block: 2rem;
    transform: translateX(100%);
    transition: transform 0.35s var(--ease);
  }
  .nav.is-open { transform: translateX(0); }
  .nav__list { display: flex; flex-direction: column; gap: 2rem; text-align: center; }
  .nav__link { font-size: 1.4rem; }
  .nav__cta { display: inline-flex; }
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.9rem 1.6rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.25s var(--ease), background 0.25s var(--ease), box-shadow 0.25s var(--ease), border-color 0.25s var(--ease);
  white-space: nowrap;
}
.btn--primary {
  background: var(--accent);
  color: #04140c;
  box-shadow: 0 0 0 0 rgba(var(--accent-rgb), 0.4);
}
.btn--primary:hover { box-shadow: 0 0 32px rgba(var(--accent-rgb), 0.45); transform: translateY(-2px); }
.btn--ghost {
  border: 1px solid var(--border-strong);
  color: var(--text);
}
.btn--ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn--outline {
  border: 1px solid var(--border-strong);
  color: var(--text);
  width: 100%;
}
.btn--outline:hover { border-color: var(--accent); color: var(--accent); background: rgba(var(--accent-rgb), 0.06); }
.btn--sm { padding: 0.6rem 1.2rem; font-size: 0.85rem; }
.btn--full { width: 100%; }

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-top: calc(var(--header-h) + 1.5rem);
  padding-bottom: 4rem;
  overflow: hidden;
}
.hero__bg {
  position: absolute;
  inset: -20%;
  background:
    radial-gradient(600px circle at var(--mx, 50%) var(--my, 30%), rgba(var(--accent-rgb), 0.12), transparent 60%),
    repeating-linear-gradient(0deg, rgba(244,246,248,0.03) 0 1px, transparent 1px 48px),
    repeating-linear-gradient(90deg, rgba(244,246,248,0.03) 0 1px, transparent 1px 48px);
  z-index: 0;
  pointer-events: none;
}
.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 3rem;
}
.hero__title { font-size: clamp(2.1rem, 6vw, 3.6rem); display: flex; flex-direction: column; gap: 0.2rem; }
.hero__subtitle { margin-top: 1.25rem; max-width: 52ch; color: var(--text-muted); font-size: 1.05rem; }
.hero__ctas { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 2rem; }
.hero__badges { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 2rem; }

.badge {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  padding: 0.4rem 0.9rem;
  color: var(--text-muted);
}

@media (min-width: 1024px) {
  .hero__inner { grid-template-columns: 1.1fr 0.9fr; align-items: center; }
}

.hero__terminal { display: none; }
@media (min-width: 1024px) { .hero__terminal { display: block; } }

.terminal {
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 30px 80px -20px rgba(0,0,0,0.6);
}
.terminal__bar {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.8rem 1rem;
  background: var(--surface-2);
  border-bottom: 1px solid var(--border);
}
.dot { width: 10px; height: 10px; border-radius: 50%; }
.dot--red { background: #ff5f57; }
.dot--yellow { background: #febc2e; }
.dot--green { background: #28c840; }
.terminal__title { margin-left: 0.75rem; font-family: var(--font-mono); font-size: 0.78rem; color: var(--text-muted); }
.terminal__body {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  padding: 1.5rem;
  min-height: 220px;
  color: var(--accent);
  white-space: pre-wrap;
}
.terminal__body .line-ok { color: var(--accent); }
.terminal__body .line-muted { color: var(--text-muted); }
.terminal__cursor { display: inline-block; width: 8px; background: var(--accent); animation: blink 1s step-end infinite; }

.scroll-indicator {
  position: absolute;
  bottom: 1.75rem;
  left: 50%;
  transform: translateX(-50%);
  width: 26px; height: 42px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  z-index: 1;
}
.scroll-indicator span {
  position: absolute;
  top: 8px; left: 50%;
  width: 4px; height: 8px;
  background: var(--accent);
  border-radius: 2px;
  transform: translateX(-50%);
  animation: scrollDot 1.6s infinite;
}
@keyframes scrollDot {
  0% { top: 8px; opacity: 1; }
  70% { top: 22px; opacity: 0; }
  100% { top: 22px; opacity: 0; }
}

/* ==========================================================================
   Pain cards (Constat)
   ========================================================================== */
.pain-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease);
}
.pain-card:hover { transform: translateY(-4px); border-color: var(--border-strong); }
.pain-card__icon { width: 28px; height: 28px; color: var(--accent-2); margin-bottom: 1rem; }
.pain-card h3 { font-size: 1.05rem; margin-bottom: 0.5rem; }
.pain-card p { color: var(--text-muted); font-size: 0.92rem; }

/* ==========================================================================
   Stats (Preuve)
   ========================================================================== */
.stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem 1rem;
  margin-top: 3rem;
}
@media (min-width: 768px) { .stats { grid-template-columns: repeat(4, 1fr); } }

.stat { text-align: center; }
.stat__number, .stat__prefix, .stat__suffix {
  font-family: var(--font-head);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  color: var(--accent);
}
.stat__suffix { font-size: clamp(1rem, 2.5vw, 1.4rem); color: var(--text-muted); margin-left: 2px; }
.stat__prefix { font-size: clamp(1.2rem, 3vw, 1.8rem); }
.stat__label { color: var(--text-muted); font-size: 0.85rem; margin-top: 0.4rem; }

.stack-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 3rem;
  justify-content: center;
}
.stack-badges li {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 0.5rem 1rem;
  color: var(--text);
  background: var(--surface);
}

/* ==========================================================================
   Pricing cards (Offres)
   ========================================================================== */
.pricing-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease), box-shadow 0.35s var(--ease);
  will-change: transform;
}
.pricing-card:hover { border-color: var(--border-strong); box-shadow: 0 20px 60px -25px rgba(0,0,0,0.5); }
.pricing-card--featured { border-color: var(--accent); background: linear-gradient(180deg, rgba(var(--accent-rgb),0.06), var(--surface) 40%); }
.pricing-card--included { border-color: rgba(var(--accent-2-rgb), 0.5); }

.pricing-card__ribbon {
  position: absolute;
  top: -12px; left: 1.75rem;
  background: var(--accent);
  color: #04140c;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
}
.pricing-card__ribbon--alt { background: var(--accent-2); color: #200800; }

.pricing-card h3 { font-size: 1.15rem; margin-bottom: 0.75rem; padding-right: 1rem; }
.pricing-card__price {
  font-family: var(--font-head);
  font-size: 2.4rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}
.pricing-card__from {
  display: block;
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.pricing-card__price--free { color: var(--accent); }
.pricing-card__price--included { color: var(--accent-2); font-size: 1.8rem; }

.pricing-card__desc { color: var(--text-muted); font-size: 0.92rem; margin-bottom: 1.5rem; }
.pricing-card__features { display: flex; flex-direction: column; gap: 0.65rem; margin-bottom: 2rem; flex-grow: 1; }
.pricing-card__features li {
  font-size: 0.88rem;
  padding-left: 1.4rem;
  position: relative;
  color: var(--text);
}
.pricing-card__features li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.45em;
  width: 8px; height: 8px;
  border-radius: 2px;
  background: var(--accent);
}
.pricing-card--included .pricing-card__features li::before { background: var(--accent-2); }

.pricing-footnote {
  margin-top: 2.5rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  font-family: var(--font-mono);
}

/* ==========================================================================
   Steps (Méthode)
   ========================================================================== */
.steps {
  display: grid;
  gap: 1.5rem;
  margin-top: 3rem;
  counter-reset: step;
}
@media (min-width: 768px) { .steps { grid-template-columns: repeat(4, 1fr); } }

.step {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  position: relative;
}
.step__number {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.85rem;
  display: block;
  margin-bottom: 1rem;
}
.step h3 { font-size: 1.05rem; margin-bottom: 0.5rem; }
.step p { color: var(--text-muted); font-size: 0.9rem; }

/* ==========================================================================
   FAQ
   ========================================================================== */
.faq { max-width: 760px; margin-top: 2.5rem; display: flex; flex-direction: column; gap: 0.75rem; }
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  overflow: hidden;
}
.faq-item__q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  text-align: left;
  font-weight: 600;
}
.faq-item__icon {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 1.2rem;
  transition: transform 0.3s var(--ease);
  flex-shrink: 0;
}
.faq-item__q[aria-expanded="true"] .faq-item__icon { transform: rotate(45deg); }

.faq-item__a {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.35s var(--ease);
}
.faq-item__a > p {
  overflow: hidden;
  color: var(--text-muted);
  font-size: 0.92rem;
  padding: 0 1.5rem;
}
.faq-item__q[aria-expanded="true"] + .faq-item__a { grid-template-rows: 1fr; }
.faq-item__q[aria-expanded="true"] + .faq-item__a > p { padding-bottom: 1.25rem; }

/* ==========================================================================
   Contact
   ========================================================================== */
.contact__grid {
  display: grid;
  gap: 2.5rem;
}
@media (min-width: 900px) { .contact__grid { grid-template-columns: 1fr 1fr; align-items: start; } }

.contact__email {
  display: inline-block;
  margin-top: 1.75rem;
  font-family: var(--font-mono);
  font-size: 1.3rem;
  color: var(--accent);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s var(--ease);
}
.contact__email:hover { border-color: var(--accent); }
.contact__note { margin-top: 0.5rem; color: var(--text-muted); font-size: 0.85rem; }

.contact-form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}
.form-field { display: flex; flex-direction: column; gap: 0.5rem; }
.form-field label { font-size: 0.85rem; color: var(--text-muted); }
.form-field input, .form-field textarea {
  background: var(--bg);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1rem;
  transition: border-color 0.2s var(--ease);
  resize: vertical;
}
.form-field input:focus, .form-field textarea:focus { border-color: var(--accent); }
.form-status { font-size: 0.85rem; color: var(--accent); min-height: 1.2em; }

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer { border-top: 1px solid var(--border); padding-block: 3rem; }
.site-footer__inner {
  display: grid;
  gap: 2rem;
}
@media (min-width: 768px) { .site-footer__inner { grid-template-columns: 1.5fr 1fr 1fr; } }
.site-footer__tagline { color: var(--text-muted); font-size: 0.85rem; margin-top: 0.75rem; max-width: 32ch; }
.site-footer__links { display: flex; flex-direction: column; gap: 0.6rem; }
.site-footer__links a { color: var(--text-muted); font-size: 0.9rem; transition: color 0.2s var(--ease); }
.site-footer__links a:hover { color: var(--accent); }
.site-footer__contact a { color: var(--accent); font-family: var(--font-mono); font-size: 0.9rem; }
.site-footer__contact p { color: var(--text-muted); font-size: 0.8rem; margin-top: 0.6rem; }
.logo--footer { font-size: 1.1rem; }

/* ==========================================================================
   Scroll reveal
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* ==========================================================================
   Grain overlay
   ========================================================================== */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 9997;
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}