/* ============================================================
   VARIABLES
   ============================================================ */
:root {
  --bg:        #0c0c0e;
  --bg2:       #111115;
  --bg3:       #17171d;
  --card:      #1a1a22;
  --border:    rgba(255,255,255,0.07);
  --border2:   rgba(255,255,255,0.13);
  --txt:       #f0ede8;
  --txt2:      #9997a0;
  --txt3:      #5e5c67;
  --gold:      #c8a97e;
  --gold2:     #d4b98e;
  --teal:      #8ecfc8;
  --red:       #e07070;
  --mono:      'DM Mono', monospace;
  --serif:     'Fraunces', Georgia, serif;
  --sans:      'Outfit', sans-serif;
  --trans:     0.3s ease;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--txt);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

/* ============================================================
   NOISE + BACKGROUND
   ============================================================ */
body::before {
  content: '';
  position: fixed; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none; z-index: 0; opacity: 0.4;
}

/* Orbes décoratifs */
.bg-orb {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
  z-index: 0;
}

.bg-orb-1 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(200,169,126,0.06) 0%, transparent 70%);
  top: -100px; left: -100px;
}

.bg-orb-2 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(142,207,200,0.05) 0%, transparent 70%);
  bottom: -80px; right: -80px;
}

/* ============================================================
   NAV
   ============================================================ */
nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 100;
  height: 64px;
  padding: 0 2rem;
  display: flex; align-items: center; justify-content: space-between;
  background: rgba(12,12,14,0.85);
  backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--border);
}

.logo {
  font-family: var(--serif);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--txt);
}

.logo em {
  color: var(--gold);
  font-style: italic;
}

.nav-tag {
  font-family: var(--mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--txt3);
  background: var(--bg3);
  border: 1px solid var(--border2);
  padding: 0.3rem 0.8rem;
  border-radius: 100px;
}

/* ============================================================
   PAGE LAYOUT
   ============================================================ */
.page {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  padding-top: 64px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  width: 100%;
  max-width: 720px;
  padding: 5rem 2rem 3rem;
  text-align: center;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--gold);
  background: rgba(200,169,126,0.08);
  border: 1px solid rgba(200,169,126,0.2);
  padding: 0.35rem 1rem;
  border-radius: 100px;
  margin-bottom: 2rem;
}

.hero-eyebrow .material-icons-outlined { font-size: 14px; }

.hero h1 {
  font-family: var(--serif);
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--txt);
  margin-bottom: 1rem;
}

.hero h1 em {
  font-style: italic;
  color: var(--gold);
}

.hero-sub {
  font-size: 1rem;
  color: var(--txt2);
  font-weight: 300;
  line-height: 1.65;
  max-width: 480px;
  margin: 0 auto;
}

/* ============================================================
   SEARCH FORM
   ============================================================ */
.search-wrap {
  width: 100%;
  max-width: 680px;
  padding: 0 2rem 3rem;
}

.search-card {
  background: var(--bg2);
  border: 1px solid var(--border2);
  border-radius: 20px;
  padding: 2rem;
  position: relative;
  overflow: hidden;
}

/* Ligne décorative dorée en haut */
.search-card::before {
  content: '';
  position: absolute;
  top: 0; left: 15%; right: 15%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
}

.search-label {
  display: block;
  font-family: var(--mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--txt3);
  margin-bottom: 0.75rem;
}

.search-input-row {
  display: flex;
  gap: 0.75rem;
}

.search-input-wrap {
  flex: 1;
  position: relative;
}

.search-input-wrap .material-icons-outlined {
  position: absolute;
  left: 1rem;
  top: 50%; transform: translateY(-50%);
  font-size: 18px;
  color: var(--txt3);
  pointer-events: none;
  transition: color var(--trans);
}

.search-input {
  width: 100%;
  padding: 0.85rem 1rem 0.85rem 2.75rem;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 12px;
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--txt);
  outline: none;
  transition: border-color var(--trans), box-shadow var(--trans);
  letter-spacing: 0.04em;
}

.search-input::placeholder { color: var(--txt3); }

.search-input:focus {
  border-color: rgba(200,169,126,0.4);
  box-shadow: 0 0 0 3px rgba(200,169,126,0.07);
}

.search-input:focus + .material-icons-outlined,
.search-input-wrap:focus-within .material-icons-outlined {
  color: var(--gold);
}

.btn-verify {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.5rem;
  background: var(--gold);
  color: #0c0c0e;
  border: none;
  border-radius: 12px;
  font-family: var(--sans);
  font-size: 0.88rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--trans);
  white-space: nowrap;
}

.btn-verify .material-icons-outlined { font-size: 18px; }

.btn-verify:hover {
  background: var(--gold2);
  box-shadow: 0 8px 28px rgba(200,169,126,0.25);
  transform: translateY(-1px);
}

.btn-verify:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.search-hint {
  margin-top: 0.85rem;
  font-size: 0.75rem;
  color: var(--txt3);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.search-hint .material-icons-outlined { font-size: 13px; }

/* ============================================================
   RESULT ZONE
   ============================================================ */
.result-zone {
  width: 100%;
  max-width: 680px;
  padding: 0 2rem 6rem;
}

/* État initial — instructions */
.state-idle {
  display: block;
}

.state-loading,
.state-valid,
.state-invalid,
.state-error {
  display: none;
}

/* ---- IDLE ---- */
.idle-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.idle-step {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.5rem 1.25rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.idle-step-num {
  font-family: var(--serif);
  font-size: 2.5rem;
  font-weight: 700;
  font-style: italic;
  color: rgba(200,169,126,0.12);
  position: absolute;
  top: 0.5rem; right: 1rem;
  line-height: 1;
}

.idle-step .material-icons-outlined {
  font-size: 26px;
  color: var(--gold);
  margin-bottom: 0.75rem;
  opacity: 0.7;
}

.idle-step h3 {
  font-family: var(--sans);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--txt);
  margin-bottom: 0.3rem;
}

.idle-step p {
  font-size: 0.75rem;
  color: var(--txt3);
  line-height: 1.5;
}

/* ---- LOADING ---- */
.state-loading {
  text-align: center;
  padding: 4rem 2rem;
}

.loading-ring {
  width: 48px; height: 48px;
  border: 2px solid var(--border2);
  border-top-color: var(--gold);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
  margin: 0 auto 1.5rem;
}

@keyframes spin { to { transform: rotate(360deg); } }

.loading-text {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--txt3);
  letter-spacing: 0.08em;
}

/* ---- VALID ---- */
.result-card {
  background: var(--bg2);
  border: 1px solid var(--border2);
  border-radius: 20px;
  overflow: hidden;
  animation: resultIn 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes resultIn {
  from { opacity: 0; transform: translateY(20px) scale(0.97); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* Bandeau statut */
.result-status-bar {
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.result-status-bar.valid {
  background: rgba(142,207,200,0.07);
  border-bottom: 1px solid rgba(142,207,200,0.15);
}

.result-status-bar.invalid {
  background: rgba(224,112,112,0.07);
  border-bottom: 1px solid rgba(224,112,112,0.15);
}

.status-icon-wrap {
  width: 40px; height: 40px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}

.valid .status-icon-wrap {
  background: rgba(142,207,200,0.12);
  color: var(--teal);
}

.invalid .status-icon-wrap {
  background: rgba(224,112,112,0.12);
  color: var(--red);
}

.status-icon-wrap .material-icons-outlined { font-size: 22px; }

.status-text h2 {
  font-family: var(--serif);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.1rem;
}

.valid .status-text h2 { color: var(--teal); }
.invalid .status-text h2 { color: var(--red); }

.status-text p {
  font-size: 0.78rem;
  color: var(--txt3);
  font-weight: 300;
}

/* Corps du résultat */
.result-body {
  padding: 1.5rem;
}

/* Aperçu bloc + infos côte à côte */
.result-preview-row {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding-bottom: 1.5rem;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.result-bloc-preview {
  width: 72px; height: 72px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.08);
  display: flex; align-items: center; justify-content: center;
  font-size: 2rem;
  flex-shrink: 0;
  position: relative;
  overflow: hidden;
}

.result-bloc-preview .bloc-color-overlay {
  position: absolute; inset: 0;
  /* La couleur du bloc sera injectée via JS : style="background:#8B5CF6" */
}

.result-bloc-preview .bloc-flag {
  position: relative; z-index: 1;
}

.result-bloc-meta h3 {
  font-family: var(--serif);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--txt);
  letter-spacing: -0.02em;
  margin-bottom: 0.2rem;
}

.result-bloc-meta .bloc-owner {
  font-size: 0.85rem;
  color: var(--txt2);
  margin-bottom: 0.35rem;
}

.result-bloc-meta .bloc-cert-id {
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--txt3);
  letter-spacing: 0.04em;
}

/* Grille de données */
.result-data-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem;
  margin-bottom: 1.5rem;
}

.data-cell {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.75rem 1rem;
}

.data-cell-label {
  font-family: var(--mono);
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--txt3);
  margin-bottom: 0.3rem;
}

.data-cell-value {
  font-family: var(--mono);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--txt);
}

.data-cell-value.gold { color: var(--gold); }
.data-cell-value.teal { color: var(--teal); }

/* Empreinte de transaction */
.tx-hash-block {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem;
  margin-bottom: 1.5rem;
}

.tx-hash-label {
  font-family: var(--mono);
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--txt3);
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.tx-hash-label .material-icons-outlined { font-size: 12px; }

.tx-hash-value {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--txt3);
  word-break: break-all;
  line-height: 1.6;
}

/* Signature HMAC */
.signature-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 1rem;
  background: rgba(142,207,200,0.05);
  border: 1px solid rgba(142,207,200,0.15);
  border-radius: 10px;
  margin-bottom: 1.5rem;
}

.signature-row.invalid-sig {
  background: rgba(224,112,112,0.05);
  border-color: rgba(224,112,112,0.15);
}

.signature-icon {
  font-size: 20px;
  flex-shrink: 0;
}

.valid .signature-icon { color: var(--teal); }
.invalid .signature-icon { color: var(--red); }

.signature-text {
  flex: 1;
}

.signature-text strong {
  display: block;
  font-size: 0.82rem;
  font-weight: 700;
  margin-bottom: 0.15rem;
}

.valid .signature-text strong { color: var(--teal); }
.invalid .signature-text strong { color: var(--red); }

.signature-text span {
  font-size: 0.72rem;
  color: var(--txt3);
}

/* Actions */
.result-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.btn-action {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.6rem 1.2rem;
  border-radius: 100px;
  font-family: var(--sans);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--trans);
}

.btn-action .material-icons-outlined { font-size: 16px; }

.btn-action-primary {
  background: var(--gold);
  color: #0c0c0e;
  border: none;
}

.btn-action-primary:hover {
  background: var(--gold2);
  box-shadow: 0 6px 20px rgba(200,169,126,0.2);
  transform: translateY(-1px);
}

.btn-action-secondary {
  background: none;
  color: var(--txt2);
  border: 1px solid var(--border2);
}

.btn-action-secondary:hover {
  border-color: var(--txt3);
  color: var(--txt);
  background: rgba(255,255,255,0.03);
}

/* ---- INVALID (spécifique) ---- */
.invalid-reason {
  background: rgba(224,112,112,0.05);
  border: 1px solid rgba(224,112,112,0.15);
  border-radius: 12px;
  padding: 1.25rem 1.5rem;
}

.invalid-reason h3 {
  font-family: var(--sans);
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--red);
  margin-bottom: 0.4rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.invalid-reason h3 .material-icons-outlined { font-size: 16px; }

.invalid-reason p {
  font-size: 0.82rem;
  color: var(--txt2);
  line-height: 1.6;
  font-weight: 300;
}

/* ---- ERROR ---- */
.state-error {
  text-align: center;
  padding: 3rem 2rem;
}

.error-icon {
  font-size: 48px;
  color: var(--txt3);
  opacity: 0.3;
  margin-bottom: 1rem;
}

.state-error h3 {
  font-family: var(--serif);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--txt);
  margin-bottom: 0.4rem;
}

.state-error p {
  font-size: 0.85rem;
  color: var(--txt2);
  font-weight: 300;
}

/* ============================================================
   FOOTER INFO
   ============================================================ */
.verify-footer {
  width: 100%;
  max-width: 680px;
  padding: 0 2rem 4rem;
}

.footer-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border2), transparent);
  margin-bottom: 2rem;
}

.footer-info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.footer-info-item {
  text-align: center;
}

.footer-info-item .material-icons-outlined {
  font-size: 20px;
  color: var(--gold);
  opacity: 0.5;
  margin-bottom: 0.5rem;
}

.footer-info-item h4 {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--txt2);
  margin-bottom: 0.25rem;
}

.footer-info-item p {
  font-size: 0.72rem;
  color: var(--txt3);
  line-height: 1.5;
  font-weight: 300;
}

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.hero         { animation: fadeInUp 0.6s ease both; }
.search-wrap  { animation: fadeInUp 0.6s ease 0.1s both; }
.result-zone  { animation: fadeInUp 0.6s ease 0.15s both; }
.verify-footer{ animation: fadeInUp 0.6s ease 0.2s both; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 640px) {
  .idle-steps         { grid-template-columns: 1fr; }
  .footer-info-grid   { grid-template-columns: 1fr; }
  .result-data-grid   { grid-template-columns: 1fr; }
  .search-input-row   { flex-direction: column; }
  .btn-verify         { width: 100%; justify-content: center; }
  .result-preview-row { flex-direction: column; text-align: center; }
  .result-actions     { flex-direction: column; }
  .btn-action         { justify-content: center; }
}