/* ============================================
   MEMENTO — Design System
   Cohérent avec l'app : monochrome dense, typographie tripartite
   ============================================ */

:root {
  /* Palette — strict alignement app */
  --void: #000000;
  --charcoal: #0a0a0a;
  --charcoal-2: #141414;
  --slate: #2c2c2e;
  --ash: #3a3a3c;
  --silver: #8e8e93;
  --mist: #636366;
  --pure: #ffffff;
  --glow: rgba(255, 255, 255, 0.4);

  /* Premium accents — utilisés avec parcimonie */
  --gold: #d4af37;

  /* Typo */
  --font-display: 'Cormorant Garamond', 'Times New Roman', serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, monospace;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;

  /* Rythme */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-6: 3rem;
  --space-8: 4rem;
  --space-12: 6rem;
  --space-16: 8rem;

  /* Container */
  --max-w: 1200px;
  --max-w-text: 680px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background: var(--void);
  color: var(--pure);
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;

  /* Texture subtile : grain noir */
  background-image:
    radial-gradient(ellipse at top, rgba(20, 20, 20, 0.6), transparent 60%),
    radial-gradient(ellipse at bottom, rgba(10, 10, 10, 0.8), transparent 50%);
}

/* Grain animé en overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ============================================
   TYPOGRAPHIE
   ============================================ */

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 300;
  letter-spacing: -0.02em;
  line-height: 1.05;
}

.h-display {
  font-size: clamp(3rem, 10vw, 7rem);
  font-style: italic;
  font-weight: 300;
}

.h-section {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 300;
}

.h-card {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 400;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--silver);
  font-weight: 400;
}

.mono {
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
}

.lead {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--silver);
  font-weight: 300;
  line-height: 1.7;
  max-width: var(--max-w-text);
}

p {
  color: var(--silver);
  font-weight: 300;
  margin-bottom: var(--space-2);
}

a {
  color: var(--pure);
  text-decoration: none;
  border-bottom: 1px solid var(--ash);
  transition: border-color 0.2s ease, color 0.2s ease;
}

a:hover {
  border-color: var(--pure);
}

/* ============================================
   LAYOUT
   ============================================ */

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--space-3);
  position: relative;
  z-index: 2;
}

.container-text {
  max-width: var(--max-w-text);
  margin: 0 auto;
  padding: 0 var(--space-3);
  position: relative;
  z-index: 2;
}

section {
  padding: var(--space-16) 0;
  position: relative;
}

@media (max-width: 768px) {
  section { padding: var(--space-12) 0; }
}

/* ============================================
   NAVIGATION
   ============================================ */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-2) var(--space-3);
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-brand {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-style: italic;
  font-weight: 400;
  letter-spacing: 0.02em;
  border: none;
}

.nav-links {
  display: flex;
  gap: var(--space-3);
  align-items: center;
}

.nav-links a {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--silver);
  border: none;
}

.nav-links a:hover { color: var(--pure); }

@media (max-width: 640px) {
  .nav-links a:not(.nav-cta) { display: none; }
}

.nav-cta {
  padding: 0.5rem 1rem;
  border: 1px solid var(--ash) !important;
  color: var(--pure) !important;
  transition: all 0.2s ease;
}

.nav-cta:hover {
  border-color: var(--pure) !important;
  background: var(--pure);
  color: var(--void) !important;
}

/* ============================================
   HERO
   ============================================ */

.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: var(--space-16);
  padding-bottom: var(--space-8);
  position: relative;
  overflow: hidden;
}

.hero-eyebrow {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
  opacity: 0;
  animation: fadeUp 1s 0.2s forwards;
}

.hero-eyebrow svg {
  width: 24px;
  height: 24px;
  fill: var(--silver);
}

.hero h1 {
  margin-bottom: var(--space-3);
  opacity: 0;
  animation: fadeUp 1.2s 0.4s forwards;
}

.hero h1 em {
  font-style: italic;
  color: var(--silver);
}

.hero-sub {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  font-style: italic;
  color: var(--silver);
  margin-bottom: var(--space-6);
  opacity: 0;
  animation: fadeUp 1.2s 0.6s forwards;
  max-width: 520px;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
  margin-bottom: var(--space-8);
  opacity: 0;
  animation: fadeUp 1.2s 0.8s forwards;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--mist);
  letter-spacing: 0.05em;
  opacity: 0;
  animation: fadeUp 1.2s 1s forwards;
}

.hero-meta span {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.hero-meta span::before {
  content: '';
  width: 4px;
  height: 4px;
  background: var(--silver);
  border-radius: 50%;
}

/* DotGrid hero — décoratif */
.hero-dotgrid {
  position: absolute;
  right: -10%;
  top: 50%;
  transform: translateY(-50%);
  width: 60%;
  max-width: 700px;
  aspect-ratio: 1;
  z-index: 0;
  opacity: 0;
  animation: fadeIn 2s 0.5s forwards;
  pointer-events: none;
}

@media (max-width: 900px) {
  .hero-dotgrid { opacity: 0.15 !important; right: -30%; }
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.95rem 1.75rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-weight: 400;
  border: 1px solid var(--ash);
  background: transparent;
  color: var(--pure);
  cursor: pointer;
  transition: all 0.3s ease;
  border-radius: 0;
}

.btn-primary {
  background: var(--pure);
  color: var(--void);
  border-color: var(--pure);
}

.btn-primary:hover {
  background: transparent;
  color: var(--pure);
}

.btn-ghost:hover {
  border-color: var(--pure);
}

.btn-arrow {
  transition: transform 0.3s ease;
}

.btn:hover .btn-arrow {
  transform: translateX(4px);
}

/* ============================================
   SECTION — PHILOSOPHY / MANIFESTO
   ============================================ */

.manifesto {
  border-top: 1px solid var(--charcoal-2);
  border-bottom: 1px solid var(--charcoal-2);
  background: linear-gradient(180deg, transparent, rgba(10,10,10,0.5), transparent);
}

.manifesto-quote {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4.5vw, 3rem);
  font-style: italic;
  font-weight: 300;
  line-height: 1.3;
  text-align: center;
  color: var(--pure);
  letter-spacing: -0.01em;
  max-width: 900px;
  margin: 0 auto;
}

.manifesto-quote .accent {
  color: var(--silver);
}

.manifesto-author {
  text-align: center;
  margin-top: var(--space-4);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--mist);
}

/* ============================================
   FEATURE GRID
   ============================================ */

.section-head {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
  flex-wrap: wrap;
}

.section-head .num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--mist);
  letter-spacing: 0.2em;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1px;
  background: var(--charcoal-2);
  border: 1px solid var(--charcoal-2);
}

.feature {
  background: var(--void);
  padding: var(--space-4);
  min-height: 280px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: background 0.3s ease;
  position: relative;
}

.feature:hover {
  background: var(--charcoal);
}

.feature-icon {
  width: 32px;
  height: 32px;
  margin-bottom: var(--space-3);
  color: var(--silver);
}

.feature h3 {
  margin-bottom: var(--space-2);
  color: var(--pure);
}

.feature p {
  font-size: 0.95rem;
  color: var(--silver);
}

.feature-num {
  position: absolute;
  top: var(--space-2);
  right: var(--space-3);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--mist);
}

/* ============================================
   SCREENSHOTS — Vitrine
   ============================================ */

.screens {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.screen {
  aspect-ratio: 9/19.5;
  background: var(--charcoal);
  border: 1px solid var(--charcoal-2);
  border-radius: 28px;
  overflow: hidden;
  position: relative;
  display: flex;
  flex-direction: column;
  padding: var(--space-3);
  transition: transform 0.5s ease, border-color 0.3s ease;
}

.screen:hover {
  transform: translateY(-4px);
  border-color: var(--ash);
}

.screen-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--mist);
  text-align: center;
  margin-bottom: var(--space-2);
}

.screen-title {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.5rem;
  text-align: center;
  margin-bottom: var(--space-3);
}

.screen-dots {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(20, 1fr);
  grid-auto-rows: 1fr;
  gap: 2px;
  align-content: center;
}

.screen-dot {
  background: var(--ash);
  border-radius: 50%;
  aspect-ratio: 1;
}

.screen-dot.filled { background: var(--pure); }

.screen-stat {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-top: var(--space-3);
  padding-top: var(--space-2);
  border-top: 1px solid var(--charcoal-2);
}

.screen-stat .val {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  color: var(--pure);
}

.screen-stat .lbl {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--silver);
}

/* ============================================
   PRICING — Single product
   ============================================ */

.pricing {
  background: linear-gradient(180deg, transparent, var(--charcoal), transparent);
  border-top: 1px solid var(--charcoal-2);
  border-bottom: 1px solid var(--charcoal-2);
}

.pricing-card {
  max-width: 560px;
  margin: 0 auto;
  text-align: center;
  padding: var(--space-8) var(--space-4);
  border: 1px solid var(--ash);
  background: var(--void);
  position: relative;
}

.pricing-card::before,
.pricing-card::after {
  content: '';
  position: absolute;
  width: 12px;
  height: 12px;
  border: 1px solid var(--gold);
}

.pricing-card::before {
  top: -1px;
  left: -1px;
  border-right: none;
  border-bottom: none;
}

.pricing-card::after {
  bottom: -1px;
  right: -1px;
  border-left: none;
  border-top: none;
}

.pricing-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: var(--space-3);
}

.pricing-title {
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  margin-bottom: var(--space-2);
}

.pricing-price {
  font-family: var(--font-mono);
  font-size: 3rem;
  margin: var(--space-3) 0 var(--space-2);
  color: var(--pure);
  font-weight: 400;
}

.pricing-price small {
  font-size: 1rem;
  color: var(--silver);
  margin-left: 0.5rem;
}

.pricing-note {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--mist);
  margin-bottom: var(--space-4);
}

.pricing-list {
  list-style: none;
  text-align: left;
  margin: var(--space-4) auto;
  max-width: 380px;
}

.pricing-list li {
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--charcoal-2);
  color: var(--silver);
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.pricing-list li::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--gold);
  border-radius: 50%;
  flex-shrink: 0;
}

/* ============================================
   FAQ
   ============================================ */

.faq-list {
  max-width: var(--max-w-text);
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--charcoal-2);
  padding: var(--space-3) 0;
}

.faq-item summary {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 400;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--pure);
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary::after {
  content: '+';
  font-family: var(--font-mono);
  font-size: 1.5rem;
  color: var(--silver);
  transition: transform 0.3s ease;
}

.faq-item[open] summary::after {
  content: '−';
}

.faq-item .faq-body {
  padding-top: var(--space-2);
  color: var(--silver);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ============================================
   FINAL CTA
   ============================================ */

.final-cta {
  text-align: center;
  padding: var(--space-16) var(--space-3);
}

.final-cta h2 {
  margin-bottom: var(--space-4);
}

/* ============================================
   FOOTER
   ============================================ */

footer {
  border-top: 1px solid var(--charcoal-2);
  padding: var(--space-6) 0 var(--space-3);
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}

@media (max-width: 640px) {
  .footer-inner {
    grid-template-columns: 1fr;
  }
}

.footer-brand {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.75rem;
  margin-bottom: var(--space-2);
}

.footer-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--mist);
}

.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--silver);
  font-weight: 400;
  margin-bottom: var(--space-2);
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 0.5rem;
}

.footer-col a {
  color: var(--silver);
  font-size: 0.9rem;
  border: none;
}

.footer-col a:hover {
  color: var(--pure);
}

.footer-bottom {
  border-top: 1px solid var(--charcoal-2);
  padding-top: var(--space-3);
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--mist);
  letter-spacing: 0.05em;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* ============================================
   LEGAL PAGES — Sobre, lecture longue
   ============================================ */

.legal-page {
  padding-top: var(--space-16);
  padding-bottom: var(--space-8);
}

.legal-page .eyebrow {
  margin-bottom: var(--space-2);
}

.legal-page h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-style: italic;
  margin-bottom: var(--space-2);
}

.legal-page .updated {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--mist);
  margin-bottom: var(--space-8);
  letter-spacing: 0.1em;
}

.legal-page h2 {
  font-size: 1.75rem;
  margin: var(--space-6) 0 var(--space-2);
  color: var(--pure);
  font-weight: 400;
}

.legal-page h3 {
  font-family: var(--font-body);
  font-size: 1.05rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin: var(--space-4) 0 var(--space-2);
  color: var(--pure);
  font-weight: 500;
}

.legal-page p,
.legal-page li {
  color: var(--silver);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: var(--space-2);
}

.legal-page ul,
.legal-page ol {
  padding-left: var(--space-3);
  margin-bottom: var(--space-3);
}

.legal-page li { margin-bottom: 0.5rem; }

.legal-page strong { color: var(--pure); font-weight: 500; }

.legal-page .info-box {
  border-left: 2px solid var(--gold);
  background: var(--charcoal);
  padding: var(--space-3);
  margin: var(--space-3) 0;
}

.legal-page .info-box p:last-child { margin-bottom: 0; }

.legal-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-3) 0;
  font-size: 0.95rem;
}

.legal-table th,
.legal-table td {
  text-align: left;
  padding: var(--space-2);
  border: 1px solid var(--charcoal-2);
  color: var(--silver);
  vertical-align: top;
}

.legal-table th {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--pure);
  background: var(--charcoal);
  font-weight: 400;
}

.toc {
  border: 1px solid var(--charcoal-2);
  padding: var(--space-3);
  margin-bottom: var(--space-6);
  background: var(--charcoal);
}

.toc h3 {
  margin-top: 0;
  margin-bottom: var(--space-2);
}

.toc ol {
  list-style: decimal-leading-zero;
  padding-left: var(--space-3);
  margin: 0;
}

.toc li { margin-bottom: 0.25rem; }

.toc a {
  color: var(--silver);
  border: none;
  font-size: 0.95rem;
}

.toc a:hover { color: var(--pure); }

/* ============================================
   ANIMATIONS
   ============================================ */

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 0.4; }
}

@keyframes dotFill {
  from { fill: var(--ash); }
  to { fill: var(--pure); }
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 1s ease, transform 1s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}