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

:root {
  --color-bg:           #F4F1EC;
  --color-surface:      #FFFFFF;
  --color-text:         #1C1915;
  --color-text-muted:   #4A4437;
  --color-text-light:   #6B5E4E;
  --color-border:       #C8C2B5;
  --color-border-light: rgba(0, 0, 0, 0.08);
  --color-accent:       #5B4FCF;
  --color-accent-bg:    #EEECFB;
  --color-accent-text:  #3730A3;
  --color-success-bg:   #D4F5C4;
  --color-success-text: #1B5C08;
  --font-serif: 'Lora', Georgia, serif;
  --font-sans:  'Plus Jakarta Sans', system-ui, sans-serif;
  --radius-sm:   8px;
  --radius-md:   12px;
  --radius-lg:   16px;
  --radius-pill: 24px;
  --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
}

/* ===== Utilitaire : éléments visuellement masqués ===== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ===== Focus visible ===== */
:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ===== Lien d'évitement ===== */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  background: var(--color-accent);
  color: #fff;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9rem;
  z-index: 9999;
  text-decoration: none;
}

.skip-link:focus {
  top: 1rem;
}

/* ===== Layout ===== */
.container {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* ===== En-tête ===== */
.site-header {
  padding: 1.5rem 0;
}

.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.site-logo {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.05rem;
  color: var(--color-text);
  text-decoration: none;
}

.site-logo:hover {
  color: var(--color-accent);
}

.badge-status {
  display: inline-block;
  background: var(--color-success-bg);
  color: var(--color-success-text);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  letter-spacing: 0.04em;
}

/* ===== Hero ===== */
.hero {
  padding: 2.5rem 0 2rem;
}

.hero-eyebrow {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--color-text-light);
  margin-bottom: 1.5rem;
}

.hero-eyebrow::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-border);
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 600;
  line-height: 1.15;
  color: var(--color-text);
  margin-bottom: 1.2rem;
}

.hero-title em {
  font-style: italic;
  color: var(--color-accent);
}

.hero-intro {
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--color-text-muted);
  max-width: 540px;
  margin-bottom: 2rem;
}

/* ===== Notice ===== */
.notice-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 1.4rem 1.6rem;
  margin-bottom: 2.5rem;
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-card);
}

.notice-icon {
  font-size: 1.5rem;
  line-height: 1;
  flex-shrink: 0;
  margin-top: 2px;
}

.notice-body h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.25rem, 3vw, 1.6rem);
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-text);
  margin-bottom: 0.5rem;
}

.notice-body p {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text-muted);
}

/* ===== Formulaire d'inscription ===== */
.signup-section {
  margin-bottom: 2.5rem;
}

.signup-label {
  font-family: var(--font-serif);
  font-size: clamp(1.25rem, 3vw, 1.6rem);
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-text);
  margin-bottom: 1.25rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
}

.signup-form {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.6rem;
}

.signup-input {
  flex: 1;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--color-text);
  min-width: 0;
}

.signup-input::placeholder {
  /* Ratio 3.89:1 sur fond blanc — conforme WCAG 1.4.3 pour les placeholders */
  color: #8A8070;
}

.signup-input:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
  border-color: var(--color-accent);
}

.signup-btn {
  padding: 0.75rem 1.25rem;
  background: var(--color-accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s ease, transform 0.1s ease;
}

.signup-btn:hover {
  background: #4840B0;
}

.signup-btn:active {
  transform: scale(0.98);
}

.signup-hint {
  font-size: 0.875rem;
  color: var(--color-text-light);
}

/* Message de confirmation (masqué par défaut via aria-hidden) */
.signup-confirm {
  display: none;
  background: var(--color-success-bg);
  color: var(--color-success-text);
  padding: 0.9rem 1.2rem;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 500;
}

.signup-confirm[aria-hidden="false"] {
  display: block;
}

/* ===== Séparateur de section ===== */
.section-separator {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.section-separator::before,
.section-separator::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-border);
}

.section-separator-label {
  font-family: var(--font-serif);
  font-size: clamp(1.25rem, 3vw, 1.6rem);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: normal;
  color: var(--color-text);
  text-transform: none;
  margin-bottom: 1.25rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
}

/* ===== Topics / tags ===== */
.topics-section {
  margin-bottom: 3rem;
}

.topics-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  list-style: none;
}

.topic-tag {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  padding: 0.5rem 1.1rem;
  font-size: 1rem;
  color: var(--color-text-muted);
}

/* ===== Pied de page ===== */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 2rem 0;
}

.site-footer .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.footer-text {
  font-size: 0.875rem;
  color: var(--color-text-light);
  text-align: center;
}

.footer-link {
  color: var(--color-accent);
  text-underline-offset: 3px;
}

/* ===== Responsive ===== */
@media (max-width: 480px) {
  .signup-form {
    flex-direction: column;
  }

  .signup-btn {
    width: 100%;
  }
}

/* ===== Accessibilité : respect des préférences de mouvement ===== */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .signup-btn {
    transition: none;
  }
}

/* ===== Cadeau du 1er avril — bloc vidéo ===== */
.gift-section {
  margin-bottom: 2.5rem;
}

.gift-intro {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--color-text-muted);
  margin-bottom: 1.25rem;
}

/* Conteneur responsive 16:9 */
.video-wrapper {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: #000;
  margin-bottom: 0.75rem;
}

.video-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.video-caption {
  font-size: 0.875rem;
  color: var(--color-text-light);
  text-align: right;
}