/*
 * OMADA — Design System
 * Fonts: Work Sans (body, logo), Instrument Serif (italic editorial), JetBrains Mono (labels, dimensions, prices)
 * Golden ratio (φ = 1.618) applied to logo hexagon sizing & spacing
 */

@import url('https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@1&family=JetBrains+Mono:wght@300;400;500&family=Work+Sans:wght@300;400;500;600;700&display=swap');

:root {
  --fond-kraft: #F4ECDD;
  --fond-nuit: #1A1714;
  --texte-principal: #2C2416;
  --accent-orange: #D4824A;
  --blanc-lampe: #F5F0E8;
  --brun-lampe: #7D5A3C;
  --beige-lampe: #C9B89A;
  --orange-lampe: #D4824A;
  --jaune-lampe: #E8C84A;
  --footer-bg: #EBE3CF;
  --phi: 1.618;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Work Sans', sans-serif;
  font-weight: 400;
  background-color: var(--fond-kraft);
  background-image: url('texture-paper.png');
  background-repeat: repeat;
  background-size: 400px 400px;
  color: var(--texte-principal);
  line-height: 1.6;
  position: relative;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}


/* ===========================================
   TYPOGRAPHY
   =========================================== */

h1, h2, h3 {
  font-family: 'Work Sans', sans-serif;
  font-weight: 600;
}

/* Instrument Serif — italic editorial accents only */
.serif-italic {
  font-family: 'Instrument Serif', serif;
  font-style: italic;
  font-weight: 400;
}

/* JetBrains Mono — labels, dimensions, prices, captions */
.mono {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

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

.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--footer-bg);
  background-image: url('texture-paper.png');
  background-repeat: repeat;
  background-size: 400px 400px;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1),
              box-shadow 0.3s ease;
}

.nav.nav-hidden {
  transform: translateY(-100%);
}

.nav.nav-scrolled {
  box-shadow: 0 1px 8px rgba(44, 36, 22, 0.08);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

/* Logo — hexagon (golden ratio: height = font-cap × φ, gap = height / φ) */
.nav-logo {
  display: flex;
  align-items: center;
  /* Gap follows golden ratio relative to hexagon height (22px / φ ≈ 13.6px) */
  gap: 4px;
  text-decoration: none;
  color: var(--texte-principal);
}

.logo-hexagon {
  display: block;
  width: 22px;
  height: 25px;
  flex-shrink: 0;
}

.logo-text {
  font-family: 'Work Sans', sans-serif;
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.nav-brand-names {
  font-family: 'Instrument Serif', serif;
  font-style: italic;
  font-size: 0.92rem;
  color: var(--texte-principal);
  opacity: 0.6;
}

/* Nav links */
.nav-links {
  display: flex;
  gap: 1.8rem;
  list-style: none;
  align-items: center;
}

.nav-links a {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--texte-principal);
  position: relative;
  padding: 0.35rem 0.6rem;
}

/* Sketch border hover — CSS-drawn border that "draws in" from 4 corners */
.nav-links a::before {
  content: '';
  position: absolute;
  inset: -4px -8px;
  pointer-events: none;
  background:
    linear-gradient(var(--texte-principal), var(--texte-principal)) top left / 0% 1px no-repeat,
    linear-gradient(var(--texte-principal), var(--texte-principal)) top right / 1px 0% no-repeat,
    linear-gradient(var(--texte-principal), var(--texte-principal)) bottom right / 0% 1px no-repeat,
    linear-gradient(var(--texte-principal), var(--texte-principal)) bottom left / 1px 0% no-repeat;
  opacity: 0;
  transition: background-size 0.45s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.2s ease;
}

.nav-links a:hover::before {
  background-size: 100% 1px, 1px 100%, 100% 1px, 1px 100%;
  opacity: 0.55;
}

/* Cart badge */
.cart-count {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.55rem;
  background: var(--accent-orange);
  color: var(--fond-kraft);
  border-radius: 50%;
  width: 16px; height: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-left: 4px;
  vertical-align: middle;
}

/* Hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 0.5rem;
  background: none;
  border: none;
}

.nav-hamburger span {
  width: 22px;
  height: 1.5px;
  background: var(--texte-principal);
  transition: transform 0.3s, opacity 0.3s;
  display: block;
}

/* Mobile menu */
.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--fond-kraft);
  z-index: 999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2.2rem;
}

.mobile-menu.active { display: flex; }

.mobile-menu a {
  font-family: 'Work Sans', sans-serif;
  font-weight: 500;
  font-size: 1.1rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--texte-principal);
}

.mobile-menu-close {
  position: absolute;
  top: 1.2rem; right: 1.5rem;
  font-size: 1.5rem;
  cursor: pointer;
  background: none;
  border: none;
  color: var(--texte-principal);
}

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

.footer {
  background-color: var(--footer-bg);
  background-image: url('texture-paper.png');
  background-repeat: repeat;
  background-size: 400px 400px;
  padding: 3rem 2rem 2rem;
  text-align: center;
}

.footer-info {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  opacity: 0.7;
}

.footer-links {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.footer-links a {
  color: var(--texte-principal);
  text-decoration: none;
  margin: 0 0.7rem;
  transition: color 0.2s;
}

.footer-links a:hover { color: var(--accent-orange); }

.footer-legal {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  opacity: 0.5;
  margin-top: 1rem;
}

.footer-legal a {
  color: var(--texte-principal);
  text-decoration: none;
}

.footer-legal a:hover { color: var(--accent-orange); }

/* ===========================================
   SKETCH HOVER EFFECT (reusable)
   =========================================== */

.sketch-hover {
  position: relative;
  cursor: pointer;
}

.sketch-hover::before {
  content: '';
  position: absolute;
  inset: -6px -8px;
  pointer-events: none;
  background:
    linear-gradient(var(--texte-principal), var(--texte-principal)) top left / 0% 1px no-repeat,
    linear-gradient(var(--texte-principal), var(--texte-principal)) top right / 1px 0% no-repeat,
    linear-gradient(var(--texte-principal), var(--texte-principal)) bottom right / 0% 1px no-repeat,
    linear-gradient(var(--texte-principal), var(--texte-principal)) bottom left / 1px 0% no-repeat;
  opacity: 0;
  transition: background-size 0.45s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.2s ease;
}

.sketch-hover:hover::before {
  background-size: 100% 1px, 1px 100%, 100% 1px, 1px 100%;
  opacity: 0.5;
}

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

.btn-primary {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 0.85rem 2.2rem;
  border: 1px solid var(--texte-principal);
  background: transparent;
  color: var(--texte-principal);
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  transition: background 0.3s, color 0.3s;
}

.btn-primary:hover {
  background: var(--texte-principal);
  color: var(--fond-kraft);
}

.btn-secondary {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.6rem 1.5rem;
  border: 1px solid rgba(44, 36, 22, 0.3);
  background: transparent;
  color: var(--texte-principal);
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  transition: border-color 0.3s;
}

.btn-secondary:hover { border-color: var(--texte-principal); }

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

.page-content { padding-top: 5rem; }

.section {
  padding: 4rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

/* ===========================================
   FORM STYLES (shared)
   =========================================== */

.form-group { margin-bottom: 1.2rem; }

.form-group label {
  display: block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 0.4rem;
  opacity: 0.8;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="tel"],
.form-group input[type="number"],
.form-group input[type="date"],
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.7rem 0.8rem;
  font-family: 'Work Sans', sans-serif;
  font-size: 0.9rem;
  background: rgba(255, 255, 255, 0.3);
  border: 1px solid rgba(44, 36, 22, 0.15);
  color: var(--texte-principal);
  outline: none;
  transition: border-color 0.3s;
  border-radius: 0;
  -webkit-appearance: none;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--accent-orange);
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

.form-group select {
  appearance: none;
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%232C2416' stroke-width='1.2' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 2.5rem;
}

.form-hint {
  font-family: 'Instrument Serif', serif;
  font-style: italic;
  font-size: 0.82rem;
  opacity: 0.5;
  margin-top: 0.3rem;
}

/* ===========================================
   RESPONSIVE
   =========================================== */

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  .nav-brand-names { display: none; }
  .section { padding: 2rem 1rem; }

  .nav { padding: 0.8rem 1.2rem; }
}

@media (min-width: 769px) {
  .nav-hamburger { display: none; }
}

/* ===========================================
   SCROLL REVEAL ANIMATIONS
   =========================================== */

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

.reveal-stagger .reveal-child {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal-stagger.revealed .reveal-child {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal,
  .reveal-stagger .reveal-child {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .nav { transition: none; }
  .nav.nav-hidden { transform: none; }
}