:root {
  --couleur-fond: #f5f7fb;
  --couleur-texte: #1f2430;
  --couleur-texte-doux: #5a6270;
  --couleur-primaire: #4f46e5;
  --couleur-primaire-fonce: #3730a3;
  --couleur-carte: #ffffff;
  --couleur-bordure: #e3e6ef;
  --couleur-alerte: #e5484d;
  --couleur-info: #2563eb;
  --couleur-succes: #2e9e5b;
  --rayon: 12px;
  --ombre: 0 4px 16px rgba(31, 36, 48, 0.06);
  --ombre-hover: 0 6px 22px rgba(31, 36, 48, 0.1);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--couleur-fond);
  color: var(--couleur-texte);
  line-height: 1.5;
}

.container {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 20px;
}

.site-header {
  position: relative;
  overflow: hidden;
  color: white;
  padding: 56px 0 48px;
  background: linear-gradient(135deg, #4338ca 0%, #4f46e5 40%, #312e81 100%);
}

.site-header-bg {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 85% 15%, rgba(255, 255, 255, 0.12) 0%, transparent 45%),
    radial-gradient(circle at 10% 80%, rgba(129, 140, 248, 0.35) 0%, transparent 50%),
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: auto, auto, 32px 32px, 32px 32px;
  pointer-events: none;
}

.site-header-inner {
  position: relative;
  z-index: 1;
}

.site-header-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin: 0 0 16px;
  padding: 6px 14px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.95);
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 999px;
  backdrop-filter: blur(4px);
}

.site-header-badge-icon {
  width: 14px;
  height: 14px;
  opacity: 0.9;
}

.site-header h1 {
  margin: 0 0 14px;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  max-width: 18ch;
}

.site-header-accent {
  background: linear-gradient(90deg, #c7d2fe, #e0e7ff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.site-header .subtitle {
  margin: 0;
  max-width: 42ch;
  font-size: 1.05rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.82);
}

.privacy-banner {
  background: linear-gradient(180deg, #eef2ff 0%, #f5f7fb 100%);
  color: var(--couleur-primaire-fonce);
  font-size: 0.88rem;
  padding: 12px 0;
  border-bottom: 1px solid var(--couleur-bordure);
}

.privacy-banner-inner {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.privacy-banner-icon {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  margin-top: 1px;
  color: var(--couleur-primaire);
  opacity: 0.85;
}

main.container {
  padding-top: 28px;
  padding-bottom: 64px;
}

.tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
  border-bottom: 2px solid var(--couleur-bordure);
}

.tab-button {
  appearance: none;
  border: none;
  background: none;
  padding: 12px 18px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--couleur-texte-doux);
  cursor: pointer;
  border-bottom: 3px solid transparent;
  transform: translateY(2px);
  transition: color 0.15s ease, border-color 0.15s ease;
}

.tab-button:hover {
  color: var(--couleur-primaire);
}

.tab-button--actif {
  color: var(--couleur-primaire);
  border-bottom-color: var(--couleur-primaire);
}

.card {
  background: var(--couleur-carte);
  border-radius: var(--rayon);
  box-shadow: var(--ombre);
  padding: 32px;
}

.card h2 {
  margin-top: 0;
}

.section-intro {
  color: var(--couleur-texte-doux);
  margin-bottom: 24px;
}

.field-group {
  margin-bottom: 24px;
}

.field-group > label {
  display: block;
  font-weight: 600;
  margin-bottom: 8px;
}

input[type="text"],
input[type="password"] {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--couleur-bordure);
  border-radius: 8px;
  font-size: 1rem;
  font-family: inherit;
  background: #fbfcff;
  color: var(--couleur-texte);
}

input[type="text"]:focus,
input[type="password"]:focus {
  outline: none;
  border-color: var(--couleur-primaire);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}

.password-input-row {
  display: flex;
  gap: 10px;
}

.password-input-row input {
  flex: 1;
}

.btn-secondary {
  appearance: none;
  border: 1px solid var(--couleur-bordure);
  background: #fbfcff;
  color: var(--couleur-texte);
  padding: 10px 16px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s ease, box-shadow 0.15s ease;
}

.btn-secondary:hover {
  background: #eef2ff;
  box-shadow: var(--ombre-hover);
}

.empty-state {
  color: var(--couleur-texte-doux);
  font-style: italic;
  padding: 16px 0;
}

/* Barre de force partagée */

.strength-display {
  margin: 16px 0 24px;
}

.strength-display-titre {
  margin: 0 0 8px;
  font-size: 0.95rem;
  color: var(--couleur-texte-doux);
}

.strength-meter {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.strength-meter-track {
  flex: 1;
  height: 10px;
  border-radius: 6px;
  background: #ecedf3;
  overflow: hidden;
}

.strength-meter-fill {
  height: 100%;
  border-radius: 6px;
  transition: width 0.2s ease, background-color 0.2s ease;
}

.strength-meter-label {
  min-width: 90px;
  font-weight: 700;
  font-size: 0.95rem;
  text-align: right;
}

.crack-time-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin-top: 8px;
}

.crack-time-table th {
  text-align: left;
  color: var(--couleur-texte-doux);
  font-weight: 600;
  padding: 6px 8px;
  border-bottom: 1px solid var(--couleur-bordure);
}

.crack-time-table td {
  padding: 10px 8px;
  border-bottom: 1px solid var(--couleur-bordure);
  vertical-align: top;
}

.scenario-titre {
  font-weight: 600;
}

.scenario-description {
  color: var(--couleur-texte-doux);
  font-size: 0.82rem;
  margin-top: 2px;
}

.scenario-duree {
  font-weight: 700;
  white-space: nowrap;
  text-align: right;
}

/* Conseils (Étape A) */

.tips-box {
  background: #fafbff;
  border: 1px solid var(--couleur-bordure);
  border-radius: 10px;
  padding: 16px 20px;
}

.tips-titre {
  margin: 0 0 10px;
  font-size: 0.95rem;
  color: var(--couleur-texte-doux);
}

.tips-liste {
  margin: 0;
  padding-left: 18px;
}

.tips-item {
  margin-bottom: 8px;
  font-size: 0.92rem;
}

.tips-item--alerte {
  color: var(--couleur-alerte);
}

.tips-item--info {
  color: var(--couleur-info);
}

.tips-item--succes {
  color: var(--couleur-succes);
}

/* Étape B : règles de substitution */

.rule-list {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.rule-item {
  display: flex;
  align-items: center;
  gap: 6px;
  background: #fafbff;
  border: 1px solid var(--couleur-bordure);
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 0.9rem;
}

.rule-item label {
  display: flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
}

.rule-item-remove {
  border: none;
  background: none;
  color: var(--couleur-alerte);
  cursor: pointer;
  font-size: 0.8rem;
  padding: 0;
}

.custom-rule-form {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.custom-rule-form input {
  width: auto;
}

#custom-rule-letter {
  width: 60px;
  text-align: center;
}

#custom-rule-replacement {
  width: 140px;
}

.options-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.option-inline {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 500;
  cursor: pointer;
}

.symbol-input {
  width: 50px !important;
  text-align: center;
}

.output-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.output-text {
  flex: 1;
  display: block;
  background: #101425;
  color: #7ef2b0;
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 1.05rem;
  word-break: break-all;
  min-height: 1.4em;
}

.output-text--hash {
  color: #9ecbff;
  font-size: 0.9rem;
}

.hash-explanation {
  color: var(--couleur-texte-doux);
  font-size: 0.85rem;
  margin: 10px 0 0;
}

.rule-note {
  color: var(--couleur-texte-doux);
  font-size: 0.85rem;
  margin: 4px 0 0;
}

.symbol-input:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.pedagogy-note {
  margin-top: 28px;
  background: #fff8e6;
  border: 1px solid #f2c94c;
  border-radius: 10px;
  padding: 14px 18px;
  font-size: 0.92rem;
  color: #6b5a12;
}

.site-footer {
  color: var(--couleur-texte-doux);
  font-size: 0.85rem;
  padding: 24px 0 48px;
  text-align: center;
}

.site-footer a {
  color: var(--couleur-primaire);
}

.footer-contact {
  margin-top: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  flex-wrap: wrap;
}

.footer-social-link {
  display: inline-flex;
  align-items: center;
  vertical-align: middle;
  line-height: 0;
}

.footer-social-icon {
  width: 20px;
  height: 20px;
}

@media (max-width: 640px) {
  .site-header {
    padding: 40px 0 36px;
  }

  .site-header h1 {
    max-width: none;
  }

  .card {
    padding: 22px;
  }

  .tabs {
    flex-direction: column;
    border-bottom: none;
  }

  .tab-button {
    text-align: left;
    border-bottom: none;
    border-left: 3px solid transparent;
    transform: none;
  }

  .tab-button--actif {
    border-left-color: var(--couleur-primaire);
  }
}