:root{
  --charcoal: #17140f;
  --charcoal-2: #1e1a13;
  --paper: #ece6d6;
  --paper-2: #e2dbc6;
  --paper-3: #d8cfb5;
  --ink: #2a2621;
  --muted: #756b5a;
  --stamp: #a33327;
  --stamp-dark: #7f281f;
  --navy: #364357;
  --approve: #3f6b4a;
  --font-display: 'Special Elite', 'Courier New', monospace;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
}

* { box-sizing: border-box; }
html, body { height:100%; margin:0; }

body {
  background: var(--charcoal);
  background-image:
    radial-gradient(ellipse at 30% 0%, rgba(163,51,39,0.08), transparent 55%),
    repeating-linear-gradient(115deg, rgba(255,255,255,0.015) 0 2px, transparent 2px 5px);
  color: var(--ink);
  font-family: var(--font-mono);
  -webkit-font-smoothing: antialiased;
}

.app {
  min-height: 100vh;
  display:flex;
  align-items:center;
  justify-content:center;
  padding: 48px 20px;
}

/* stack of paper sheets behind the card */
.paper-stack {
  position: relative;
  width: 100%;
  max-width: 620px;
}
.paper-stack::before,
.paper-stack::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--paper-3);
  border-radius: 3px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.45);
}
.paper-stack::before { transform: rotate(-2.4deg) translateY(6px); z-index: 0; }
.paper-stack::after   { transform: rotate(1.6deg) translateY(3px); background:#dcd4bb; z-index: 0; }

.card {
  position: relative;
  z-index: 1;
  transform: rotate(-0.35deg);
  background: var(--paper);
  background-image:
    repeating-linear-gradient(rgba(42,38,33,0.05) 0 1px, transparent 1px 34px);
  border-radius: 3px;
  box-shadow: 0 26px 50px rgba(0,0,0,0.5);
  padding: 40px 38px 28px;
}

.stamp {
  position: absolute;
  top: -18px;
  right: 26px;
  width: 74px;
  height: 74px;
  border-radius: 50%;
  border: 2px dashed var(--stamp);
  color: var(--stamp);
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:2px;
  transform: rotate(9deg);
  background: rgba(163,51,39,0.05);
  z-index: 2;
}
.stamp-icon { width:20px; height:20px; }
.stamp span {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.card__header { margin-bottom: 26px; padding-right: 70px; }
.title {
  font-family: var(--font-display);
  font-size: 27px;
  font-weight: 400;
  margin: 0 0 8px;
  color: var(--ink);
  letter-spacing: 0.01em;
}
.subtitle {
  margin: 0;
  font-size: 13px;
  line-height: 1.55;
  color: var(--muted);
  max-width: 46ch;
}

.form { display:flex; flex-direction:column; gap:18px; }
.field { display:flex; flex-direction:column; gap:8px; }
.field__label {
  font-family: var(--font-display);
  font-size: 13px;
  color: var(--ink);
}

.input {
  background: var(--paper-2);
  border: none;
  border-bottom: 2px solid var(--paper-3);
  padding: 10px 12px;
  font-size: 14px;
  font-family: var(--font-mono);
  color: var(--ink);
  outline: none;
  width: 100%;
  border-radius: 2px 2px 0 0;
  transition: border-color .15s ease, background .15s ease;
}
.input::placeholder { color: #9a9280; }
.input:focus {
  border-color: var(--stamp);
  background: #efe9d9;
}
.input--textarea { min-height: 104px; resize: vertical; line-height: 1.5; }

.row { display:flex; gap:20px; align-items:flex-start; flex-wrap:wrap; }
.field--small { flex:1 1 200px; min-width:180px; }
.actions { display:flex; gap:10px; flex:0 0 auto; align-items:flex-start; padding-top: 22px; }

.pass-wrapper { position:relative; display:flex; }
.pass-wrapper .input { padding-right: 40px; }
.pass-toggle {
  position:absolute;
  right:6px;
  top:50%;
  transform:translateY(-50%);
  background:none;
  border:none;
  color:var(--muted);
  padding:5px;
  cursor:pointer;
  display:flex;
}
.pass-toggle:hover, .pass-toggle.active { color: var(--stamp); }
.icon { width:16px; height:16px; }

.strength { display:flex; align-items:center; gap:8px; height:12px; opacity:0; transition:opacity .2s ease; }
.strength.show { opacity:1; }
.strength__bar { flex:1; height:3px; background: var(--paper-3); }
.strength__bar span { display:block; height:100%; width:0%; transition:width .25s ease, background .25s ease; }
.strength__label { font-size:10px; color:var(--muted); white-space:nowrap; }

/* buttons */
.btn {
  font-family: var(--font-display);
  font-size: 14px;
  padding: 10px 20px;
  border-radius: 2px;
  cursor: pointer;
  transition: transform .15s ease, background .15s ease, box-shadow .15s ease;
}
.btn:disabled { opacity:.5; cursor:not-allowed; }

.btn--stamp {
  background: var(--stamp);
  color: var(--paper);
  border: 2px solid var(--stamp-dark);
  transform: rotate(-1.5deg);
  box-shadow: 0 3px 0 var(--stamp-dark);
}
.btn--stamp:hover:not(:disabled) { transform: rotate(0deg) translateY(-1px); box-shadow: 0 4px 0 var(--stamp-dark); }
.btn--stamp:active:not(:disabled) { transform: rotate(0deg) translateY(2px); box-shadow: 0 1px 0 var(--stamp-dark); }

.btn--outline {
  background: transparent;
  color: var(--navy);
  border: 2px solid var(--navy);
}
.btn--outline:hover:not(:disabled) { background: rgba(54,67,87,0.08); }

.btn--small { font-size: 12px; padding: 7px 14px; }

.text-btn {
  background: none;
  border: none;
  border-bottom: 1px solid transparent;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.02em;
  padding: 2px 0;
  cursor: pointer;
  transition: color .15s ease, border-color .15s ease;
}
.text-btn:hover { color: var(--stamp); border-color: var(--stamp); }
.text-btn--light { color: #d8d2c2; }
.text-btn--light:hover { color: var(--stamp); }

.warning {
  min-height: 16px;
  color: var(--stamp);
  font-size: 12.5px;
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity .18s ease, transform .18s ease;
}
.warning.show { opacity:1; transform: translateY(0); }

@keyframes shake {
  0% { transform: translateX(0); } 20% { transform: translateX(-5px); }
  40% { transform: translateX(5px); } 60% { transform: translateX(-3px); }
  80% { transform: translateX(3px); } 100% { transform: translateX(0); }
}
.warning.shake { animation: shake .4s cubic-bezier(.36,.07,.19,.97); }

/* result - teleprinter slip */
.result {
  background: #f2ede0;
  border-left: 3px dashed var(--paper-3);
  padding: 16px 18px;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity .2s ease, transform .2s ease;
  pointer-events: none;
}
.result[aria-hidden="false"] { opacity:1; transform: translateY(0); pointer-events:auto; }

.result__meta { display:flex; align-items:center; justify-content:space-between; gap:10px; margin-bottom:10px; flex-wrap:wrap; }
.result__label { font-family: var(--font-display); font-size: 12.5px; color: var(--stamp); }
.result__controls { display:flex; gap:12px; flex-wrap:wrap; }

.result__text {
  font-family: var(--font-mono);
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 13.5px;
  line-height: 1.6;
  margin: 0;
  padding: 0;
  background: none;
  border: none;
  color: var(--ink);
  max-height: 260px;
  overflow: auto;
}

.card__footer {
  margin-top: 22px;
  padding-top: 14px;
  border-top: 1px dashed var(--paper-3);
  font-size: 11px;
  color: var(--muted);
  line-height: 1.5;
}

.input:focus, .btn:focus, .text-btn:focus, .result__text:focus, .pass-toggle:focus {
  outline: 2px solid var(--stamp);
  outline-offset: 2px;
}

.qr-container {
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:12px;
  margin-top:14px;
  max-height:0;
  opacity:0;
  overflow:hidden;
  transition:max-height .35s ease, opacity .35s ease;
}
.qr-container.show { max-height:420px; opacity:1; padding-top:6px; }
#qrCode { padding:10px; background:#fff; }
#qrCode canvas { display:block; }

/* toasts */
#toastContainer { position:fixed; top:20px; right:20px; width:260px; z-index:2000; pointer-events:none; }
.toast {
  margin-bottom:10px;
  padding:12px 16px;
  background: var(--stamp);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size:12.5px;
  box-shadow:0 8px 20px rgba(0,0,0,.35);
  transform:translateX(320%);
  opacity:0;
  animation:slideIn .35s forwards, fadeOut .35s 3s forwards;
}
.toast.success { background: var(--approve); }
@keyframes slideIn { from { transform:translateX(320%); opacity:0; } to { transform:translateX(0); opacity:1; } }
@keyframes fadeOut { to { opacity:0; transform:translateX(320%); } }

/* camera modal */
.camera-modal {
  position:fixed; inset:0;
  background: rgba(10,8,5,0.94);
  display:none; align-items:center; justify-content:center; flex-direction:column;
  z-index:1000;
}
.camera-modal[aria-hidden="false"] { display:flex; }

#qrVideo {
  width:90%; max-width:380px;
  background:#000;
  object-fit:cover;
  box-shadow:0 20px 50px rgba(0,0,0,.5);
}

.scan-overlay {
  position:absolute; inset:0; pointer-events:none;
  display:flex; flex-direction:column; align-items:center; justify-content:center; gap:18px;
}
.scan-frame {
  position:relative;
  width:70%; height:70%; max-width:280px; max-height:280px;
  border:2px dashed var(--stamp);
  box-shadow:0 0 0 9999px rgba(10,8,5,0.5);
  overflow:hidden;
}
.scan-line {
  position:absolute; left:0; right:0; height:2px;
  background: var(--stamp);
  top:0;
  animation: scan 2.2s ease-in-out infinite;
}
@keyframes scan { 0% { top:0%; } 50% { top:98%; } 100% { top:0%; } }

.scan-hint {
  color:#d8d2c2;
  font-family: var(--font-mono);
  font-size:12px;
  margin:0;
}

.camera-controls { margin-top:22px; }

.camera-close {
  position:absolute; top:18px; right:22px;
  background:none; border:none;
  color:#d8d2c2;
  font-size:30px;
  line-height:1;
  cursor:pointer;
  z-index:2;
}
.camera-close:hover { color: var(--stamp); }

@media (max-width:640px){
  .card { padding: 32px 22px 22px; }
  .card__header { padding-right: 0; }
  .stamp { position:static; margin-bottom:18px; transform: rotate(-4deg); }
  .actions { flex-direction:column; align-items:stretch; padding-top:0; width:100%; }
  .btn { width:100%; }
  .row { align-items:stretch; }
}