/**
 * Opera GX Prelander - Style CSS
 * ==============================
 * Design Gaming: fond sombre, accents néon magenta/cyan
 * Mobile-first, performance optimisée
 */

/* =====================================================
   CSS VARIABLES
   ===================================================== */
:root {
  /* Primary Colors */
  --color-primary: #fa1e4e;
  --color-primary-light: #ff4d6d;
  --color-primary-dark: #c4163d;
  --color-secondary: #00f0ff;
  --color-accent-purple: #7b5cff;

  /* Background Colors */
  --color-bg-primary: #0a0a0c;
  --color-bg-secondary: #0f0f14;
  --color-bg-tertiary: #151520;
  --color-bg-card: #12121a;
  --color-bg-card-hover: #1a1a28;

  /* Text Colors */
  --color-text-primary: #ffffff;
  --color-text-secondary: #a0a0b0;
  --color-text-muted: #606070;

  /* Border & Effects */
  --color-border: #252535;
  --color-border-glow: rgba(250, 30, 78, 0.4);

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #fa1e4e 0%, #ff6b35 100%);
  --gradient-bg: radial-gradient(ellipse at top center, #1a0a14 0%, #0a0a0c 60%, #050508 100%);
  --gradient-card: linear-gradient(180deg, rgba(250, 30, 78, 0.06) 0%, transparent 100%);

  /* Shadows */
  --shadow-glow: 0 0 40px rgba(250, 30, 78, 0.35);
  --shadow-glow-strong: 0 0 80px rgba(250, 30, 78, 0.5);
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);

  /* Spacing & Sizing */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Ubuntu, 'Helvetica Neue', sans-serif;
}

/* =====================================================
   RESET & BASE
   ===================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text-primary);
  background: var(--gradient-bg);
  background-color: var(--color-bg-primary);
  background-attachment: fixed;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* Focus States */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* =====================================================
   LAYOUT
   ===================================================== */
.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

/* =====================================================
   STICKY HEADER
   ===================================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 10, 12, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  padding: 12px 0;
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

.logo {
  height: 32px;
  width: auto;
}

/* =====================================================
   BUTTONS
   ===================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-primary);
  color: #fff;
  border: none;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-glow {
  box-shadow: 0 4px 20px rgba(250, 30, 78, 0.3);
}

.btn-glow:hover {
  box-shadow: var(--shadow-glow-strong);
}

.btn-large {
  padding: 16px 40px;
  font-size: 16px;
  border-radius: var(--radius-lg);
}

/* =====================================================
   HERO SECTION
   ===================================================== */
.hero {
  padding: 120px 20px 60px;
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.hero-container {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}

@media (min-width: 768px) {
  .hero-container {
    grid-template-columns: 1fr 1fr;
    gap: 60px;
  }
}

.hero-content {
  text-align: center;
}

@media (min-width: 768px) {
  .hero-content {
    text-align: left;
  }
}

.hero-title {
  font-size: clamp(2rem, 6vw, 3.5rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #fff 0%, #fa1e4e 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  margin-bottom: 28px;
  max-width: 500px;
}

@media (min-width: 768px) {
  .hero-subtitle {
    margin-left: 0;
    margin-right: auto;
  }
}

.hero-subtitle strong {
  color: var(--color-primary);
}

.hero-bullets {
  list-style: none;
  margin-bottom: 24px;
  text-align: left;
}

.hero-bullets li {
  position: relative;
  padding-left: 28px;
  margin-bottom: 12px;
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

.hero-bullets li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 700;
}

.hero-note {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--color-primary);
}

.note-icon {
  flex-shrink: 0;
}

/* Hero Image */
.hero-image {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  order: -1;
}

@media (min-width: 768px) {
  .hero-image {
    order: 1;
  }
}

.hero-img {
  width: 140%;
  max-width: 200%;
  height: auto;
  border-radius: var(--radius-lg);
  filter: drop-shadow(0 0 50px rgba(250, 30, 78, 0.25));
  animation: float 5s ease-in-out infinite;
}

@media (min-width: 768px) {
  .hero-img {
    width: 180%;
    max-width: 220%;
  }
}

.hero-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 140%;
  height: 140%;
  background: radial-gradient(ellipse, rgba(250, 30, 78, 0.12) 0%, transparent 70%);
  pointer-events: none;
  z-index: -1;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

/* =====================================================
   SECTION STYLES
   ===================================================== */
section {
  padding: 80px 0;
}

.section-title {
  font-size: clamp(1.5rem, 4vw, 2.2rem);
  font-weight: 700;
  text-align: center;
  margin-bottom: 50px;
  color: var(--color-text-primary);
}

.section-intro {
  text-align: center;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto 40px;
  font-size: 1.05rem;
}

/* =====================================================
   DISCOVER CARDS
   ===================================================== */
.discover {
  background: var(--color-bg-secondary);
}

.cards-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 640px) {
  .cards-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.card {
  background: var(--gradient-card), var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: all var(--transition-base);
}

.card:hover {
  background: var(--gradient-card), var(--color-bg-card-hover);
  border-color: var(--color-border-glow);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.card-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--color-text-primary);
}

.card p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* =====================================================
   WHY IT WORKS
   ===================================================== */
.why-works {
  background: var(--color-bg-primary);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 500px;
  margin: 0 auto 30px;
}

.stat {
  text-align: center;
  padding: 24px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

.disclaimer {
  text-align: center;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  font-style: italic;
}

/* =====================================================
   TESTIMONIALS
   ===================================================== */
.testimonials {
  background: var(--color-bg-secondary);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-bottom: 24px;
}

@media (min-width: 640px) {
  .testimonials-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.testimonial {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  position: relative;
}

.testimonial::before {
  content: '"';
  position: absolute;
  top: 16px;
  left: 20px;
  font-size: 3rem;
  color: var(--color-primary);
  opacity: 0.3;
  font-family: Georgia, serif;
  line-height: 1;
}

.testimonial p {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
  padding-top: 20px;
  font-style: italic;
}

.testimonial footer {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  font-style: normal;
}

.testimonials-note {
  text-align: center;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  font-style: italic;
}

/* =====================================================
   FAQ
   ===================================================== */
.faq {
  background: var(--color-bg-primary);
}

.faq-list {
  max-width: 700px;
  margin: 0 auto;
}

.faq-item {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
}

.faq-item summary {
  padding: 18px 24px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background var(--transition-base);
  list-style: none;
}

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

.faq-item summary::after {
  content: '+';
  font-size: 1.4rem;
  color: var(--color-primary);
  transition: transform var(--transition-base);
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item summary:hover {
  background: var(--color-bg-card-hover);
}

.faq-item p {
  padding: 0 24px 20px;
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* =====================================================
   FOOTER
   ===================================================== */
.footer {
  background: var(--color-bg-tertiary);
  padding: 60px 0 40px;
  text-align: center;
  border-top: 1px solid var(--color-border);
}

.footer .btn {
  margin-bottom: 32px;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 24px;
}

.footer-link {
  color: var(--color-text-secondary);
  font-size: 0.85rem;
  transition: color var(--transition-base);
  padding: 8px;
}

.footer-link:hover {
  color: var(--color-primary);
}

.footer-disclaimer {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto 16px;
  line-height: 1.6;
}

.footer-copyright {
  font-size: 0.7rem;
  color: var(--color-text-muted);
}

/* =====================================================
   SCROLL CTA (sticky bottom)
   ===================================================== */
.scroll-cta {
  position: fixed;
  left: 16px;
  right: 16px;
  bottom: -100px;
  z-index: 999;
  padding: 16px;
  border-radius: var(--radius-lg);
  background: rgba(10, 10, 12, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--color-border);
  text-align: center;
  box-shadow: 0 -4px 30px rgba(0, 0, 0, 0.4);
  transition: bottom var(--transition-bounce);
}

.scroll-cta.visible {
  bottom: 16px;
}

.scroll-cta .btn {
  width: 100%;
}

@media (min-width: 640px) {
  .scroll-cta {
    left: 50%;
    right: auto;
    transform: translateX(-50%);
    max-width: 400px;
  }
  
  .scroll-cta.visible {
    bottom: 24px;
  }
}

/* =====================================================
   MODALS
   ===================================================== */
.modal {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.modal.open {
  opacity: 1;
  visibility: visible;
}

.modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
}

.modal-content {
  position: relative;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  max-width: 500px;
  width: 100%;
  max-height: 80vh;
  overflow-y: auto;
  transform: scale(0.9);
  transition: transform var(--transition-bounce);
}

.modal.open .modal-content {
  transform: scale(1);
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--color-text-secondary);
  background: var(--color-bg-card);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}

.modal-close:hover {
  color: var(--color-primary);
  background: var(--color-bg-card-hover);
}

.modal h3 {
  font-size: 1.3rem;
  margin-bottom: 20px;
  padding-right: 40px;
}

.modal-body p {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  margin-bottom: 16px;
  line-height: 1.6;
}

.modal-body p:last-child {
  margin-bottom: 0;
}