:root {
  --bg-dark: #090a0f;
  --card-bg: #11141d;
  --card-border: #1e2330;
  
  --red-main: #ff2a4b;
  --red-glow: rgba(255, 42, 75, 0.4);
  --red-dark: #801223;
  
  --text-main: #f0f3f9;
  --text-muted: #8a94a6;
  
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-code: 'Fira Code', monospace;
}

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

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.6;
  position: relative;
  overflow-x: hidden;
}

/* Texture de fond cyber */
.cyber-grid {
  position: fixed;
  top: 0; left: 0; width: 100%; height: 100%;
  background-image: 
    linear-gradient(rgba(255, 42, 75, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 42, 75, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  z-index: -1;
  pointer-events: none;
}

.red-text { color: var(--red-main); }
.red-glow-text {
  color: #fff;
  text-shadow: 0 0 15px var(--red-glow), 0 0 30px var(--red-glow);
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 40px 20px;
}

/* Header & Nav */
header {
  background-color: rgba(17, 20, 29, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--card-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 900px;
  margin: 0 auto;
  padding: 15px 20px;
}

.logo {
  font-family: var(--font-code);
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: -0.5px;
}

nav ul {
  display: flex;
  gap: 20px;
  list-style: none;
  align-items: center;
}

nav a {
  color: var(--text-main);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  transition: color 0.2s;
}

nav a:hover { color: var(--red-main); }

/* Buttons Cyber */
.btn-cyber {
  background: linear-gradient(135deg, var(--red-main) 0%, var(--red-dark) 100%);
  color: #fff !important;
  padding: 12px 24px;
  border-radius: 6px;
  font-weight: 700;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--red-main);
  box-shadow: 0 0 15px var(--red-glow);
  transition: all 0.3s ease;
  cursor: pointer;
}

.btn-cyber:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 25px rgba(255, 42, 75, 0.7);
}

.btn-nav {
  border: 1px solid var(--card-border);
  padding: 6px 14px;
  border-radius: 6px;
  background: var(--card-bg);
}

.btn-nav:hover {
  border-color: var(--red-main);
  box-shadow: 0 0 10px var(--red-glow);
}

.btn-secondary {
  display: inline-block;
  background: var(--card-bg);
  color: var(--red-main);
  border: 1px solid var(--red-main);
  padding: 10px 20px;
  border-radius: 6px;
  font-weight: 600;
  text-decoration: none;
  transition: 0.2s;
}

.btn-secondary:hover {
  background: var(--red-main);
  color: #fff;
  box-shadow: 0 0 15px var(--red-glow);
}

/* Hero Section */
.hero {
  text-align: center;
  padding: 80px 20px;
  border-bottom: 1px solid var(--card-border);
}

.badge-cyber {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-code);
  font-size: 0.75rem;
  color: var(--red-main);
  background: rgba(255, 42, 75, 0.1);
  border: 1px solid rgba(255, 42, 75, 0.3);
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 15px;
}

.hero p {
  color: var(--text-muted);
  font-size: 1.1rem;
  max-width: 650px;
  margin: 0 auto 30px auto;
}

/* Titres de Section */
h2 {
  font-family: var(--font-code);
  font-size: 1.3rem;
  color: var(--text-main);
  margin-bottom: 15px;
  letter-spacing: -0.5px;
}

.subtitle {
  color: var(--text-muted);
  margin-bottom: 25px;
}

/* Grille des démos */
.demos-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 25px;
  margin-top: 20px;
}

@media (max-width: 768px) {
  .demos-grid {
    grid-template-columns: 1fr;
  }
}

.badge-tag {
  font-family: var(--font-code);
  font-size: 0.72rem;
  color: var(--text-muted);
  background: var(--bg-dark);
  border: 1px solid var(--card-border);
  padding: 3px 10px;
  border-radius: 4px;
  display: inline-block;
  margin-bottom: 12px;
}

.red-badge {
  color: var(--red-main);
  border-color: rgba(255, 42, 75, 0.4);
  background: rgba(255, 42, 75, 0.08);
}

.highlight-mockup {
  border-color: rgba(255, 42, 75, 0.3);
}

/* Mockup Navigateur */
.browser-mockup {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  transition: border-color 0.3s;
}

.browser-mockup:hover {
  border-color: rgba(255, 42, 75, 0.4);
}

.browser-header {
  background: #0d0f17;
  padding: 10px 15px;
  display: flex;
  align-items: center;
  gap: 15px;
  border-bottom: 1px solid var(--card-border);
}

.dots { display: flex; gap: 6px; }
.dot { width: 10px; height: 10px; border-radius: 50%; }
.dot.red { background: #ff5f56; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #27c93f; }

.browser-address {
  background: var(--bg-dark);
  color: var(--text-muted);
  font-family: var(--font-code);
  font-size: 0.8rem;
  padding: 4px 12px;
  border-radius: 4px;
  flex: 1;
  border: 1px solid var(--card-border);
}

.browser-content {
  padding: 30px 20px;
  background: linear-gradient(180deg, rgba(255,42,75,0.05) 0%, transparent 100%);
  text-align: center;
}

.preview-info h3 {
  font-size: 1.3rem;
  margin-bottom: 10px;
}

.preview-info p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin: 0 auto 20px auto;
}

/* Formulaire Cyber & Sections */
.cyber-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 10px;
  padding: 30px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.form-section-title {
  font-family: var(--font-code);
  font-size: 1rem;
  color: var(--text-main);
  border-bottom: 1px solid var(--card-border);
  padding-bottom: 8px;
  margin: 25px 0 15px 0;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.form-section-title:first-of-type {
  margin-top: 0;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
}

@media (max-width: 600px) {
  .form-row { grid-template-columns: 1fr; }
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-family: var(--font-code);
  font-size: 0.85rem;
  margin-bottom: 8px;
  color: var(--text-main);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px;
  background: var(--bg-dark);
  border: 1px solid var(--card-border);
  border-radius: 6px;
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  transition: all 0.2s;
}

.form-group input[type="file"] {
  padding: 8px;
  cursor: pointer;
}

.form-group input[type="file"]::file-selector-button {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  color: var(--red-main);
  padding: 6px 12px;
  border-radius: 4px;
  cursor: pointer;
  margin-right: 10px;
  font-family: var(--font-code);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--red-main);
  box-shadow: 0 0 10px var(--red-glow);
}

.full-width {
  width: 100%;
  justify-content: center;
  font-size: 1rem;
}

/* Footer */
footer {
  text-align: center;
  padding: 30px 20px;
  border-top: 1px solid var(--card-border);
  margin-top: 40px;
  font-size: 0.85rem;
  color: var(--text-muted);
  font-family: var(--font-code);
}