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

:root {
  --bg:          #0b0d17;
  --surface:     #13152b;
  --surface-2:   #1b1e38;
  --border:      #272b4d;
  --border-light:#323660;
  --text:        #e4e8ff;
  --text-muted:  #7b82b0;
  --text-dim:    #4a5080;
  --accent:      #6c63ff;
  --accent-hover:#5a52e8;
  --accent-dim:  rgba(108,99,255,.12);
  --accent-glow: rgba(108,99,255,.25);
  --success:     #22d3a5;
  --success-dim: rgba(34,211,165,.12);
  --warning:     #f59e0b;
  --danger:      #f43f5e;
  --danger-dim:  rgba(244,63,94,.1);
  --radius:      12px;
  --radius-sm:   8px;
  --shadow:      0 4px 24px rgba(0,0,0,.5);
  --transition:  .18s ease;
}

html { font-size: 16px; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.6;
}

/* ─── Layout ────────────────────────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: 660px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ─── Header ────────────────────────────────────────────────────────────────── */
header {
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--border);
  background: rgba(11,13,23,.8);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: .5rem;
  text-decoration: none;
  color: var(--text);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -.02em;
}

.logo svg {
  color: var(--accent);
  flex-shrink: 0;
}

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

.header-badge {
  font-size: .72rem;
  font-weight: 600;
  color: var(--text-muted);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 99px;
  padding: .25rem .6rem;
  letter-spacing: .04em;
}

/* ─── Main content ──────────────────────────────────────────────────────────── */
main {
  flex: 1;
  padding: 2.5rem 0 4rem;
}

/* ─── Hero ──────────────────────────────────────────────────────────────────── */
.hero {
  text-align: center;
  margin-bottom: 2rem;
}

.hero h1 {
  font-size: clamp(1.6rem, 4vw, 2.1rem);
  font-weight: 800;
  letter-spacing: -.03em;
  line-height: 1.25;
  margin-bottom: .6rem;
  background: linear-gradient(135deg, #e4e8ff 30%, var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  color: var(--text-muted);
  font-size: .95rem;
  max-width: 440px;
  margin: 0 auto;
}

/* ─── Features strip ────────────────────────────────────────────────────────── */
.features {
  display: flex;
  justify-content: center;
  gap: 1.25rem;
  flex-wrap: wrap;
  margin-bottom: 1.75rem;
}

.feat {
  display: flex;
  align-items: center;
  gap: .35rem;
  font-size: .78rem;
  color: var(--text-muted);
  font-weight: 500;
}

.feat svg {
  color: var(--success);
  flex-shrink: 0;
}

/* ─── Cards ─────────────────────────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  box-shadow: var(--shadow);
}

/* ─── Form elements ─────────────────────────────────────────────────────────── */
.form-group {
  margin-bottom: 1.25rem;
}

label {
  display: block;
  font-size: .82rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: .5rem;
  letter-spacing: .03em;
  text-transform: uppercase;
}

.label-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: .5rem;
}

.label-row label { margin-bottom: 0; }

.label-hint {
  font-size: .75rem;
  font-weight: 400;
  color: var(--text-dim);
  text-transform: none;
  letter-spacing: 0;
}

textarea, input[type="password"], input[type="text"] {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: inherit;
  font-size: .95rem;
  padding: .75rem 1rem;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
  resize: vertical;
}

textarea { min-height: 140px; }

textarea:focus, input[type="password"]:focus, input[type="text"]:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

textarea::placeholder, input::placeholder { color: var(--text-dim); }

.char-count {
  font-size: .75rem;
  color: var(--text-dim);
  text-align: right;
  margin-top: .35rem;
}

/* ─── Toggle options ─────────────────────────────────────────────────────────── */
.option-group {
  display: flex;
  gap: .4rem;
  flex-wrap: wrap;
}

.option-btn {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: .82rem;
  font-weight: 500;
  padding: .4rem .85rem;
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
  white-space: nowrap;
}

.option-btn:hover {
  border-color: var(--accent);
  color: var(--text);
}

.option-btn.active {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
  font-weight: 600;
}

/* ─── Passphrase toggle ──────────────────────────────────────────────────────── */
.passphrase-toggle {
  display: flex;
  align-items: center;
  gap: .5rem;
  cursor: pointer;
  font-size: .82rem;
  color: var(--text-muted);
  user-select: none;
  width: fit-content;
  margin-bottom: .75rem;
}

.passphrase-toggle input[type="checkbox"] { display: none; }

.toggle-track {
  width: 36px;
  height: 20px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 99px;
  position: relative;
  transition: all var(--transition);
  flex-shrink: 0;
}

.toggle-track::after {
  content: '';
  position: absolute;
  top: 2px; left: 2px;
  width: 14px; height: 14px;
  background: var(--text-dim);
  border-radius: 50%;
  transition: all var(--transition);
}

.passphrase-toggle input:checked ~ .toggle-track {
  background: var(--accent-dim);
  border-color: var(--accent);
}

.passphrase-toggle input:checked ~ .toggle-track::after {
  left: 18px;
  background: var(--accent);
}

.passphrase-field {
  overflow: hidden;
  max-height: 0;
  opacity: 0;
  transition: max-height .25s ease, opacity .2s ease, margin .2s ease;
}

.passphrase-field.open {
  max-height: 80px;
  opacity: 1;
}

.input-wrap {
  position: relative;
}

.input-wrap input { padding-right: 2.75rem; }

.eye-btn {
  position: absolute;
  right: .75rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  padding: .2rem;
  line-height: 0;
  transition: color var(--transition);
}
.eye-btn:hover { color: var(--text-muted); }

/* ─── Divider ────────────────────────────────────────────────────────────────── */
.divider {
  height: 1px;
  background: var(--border);
  margin: 1.25rem 0;
}

/* ─── Buttons ────────────────────────────────────────────────────────────────── */
.btn-primary {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  width: 100%;
  background: var(--accent);
  border: none;
  border-radius: var(--radius-sm);
  color: #fff;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 700;
  padding: .85rem 1.5rem;
  cursor: pointer;
  transition: all var(--transition);
  letter-spacing: -.01em;
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px var(--accent-glow);
}

.btn-primary:active:not(:disabled) { transform: translateY(0); }

.btn-primary:disabled {
  opacity: .5;
  cursor: not-allowed;
}

.btn-secondary {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  width: 100%;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-family: inherit;
  font-size: .9rem;
  font-weight: 600;
  padding: .7rem 1.5rem;
  cursor: pointer;
  transition: all var(--transition);
  margin-top: .75rem;
}

.btn-secondary:hover {
  border-color: var(--border-light);
  color: var(--text);
}

.btn-danger {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  background: var(--danger);
  border: none;
  border-radius: var(--radius-sm);
  color: #fff;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 700;
  padding: .85rem 2rem;
  cursor: pointer;
  transition: all var(--transition);
}

.btn-danger:hover {
  background: #e11d48;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(244,63,94,.3);
}

/* ─── Result card ────────────────────────────────────────────────────────────── */
.result-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  margin-bottom: 1.5rem;
  gap: .5rem;
}

.result-icon {
  width: 52px; height: 52px;
  background: var(--success-dim);
  border: 1px solid rgba(34,211,165,.25);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--success);
  margin-bottom: .25rem;
}

.result-header h2 {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -.02em;
}

.result-header p { font-size: .88rem; color: var(--text-muted); }

.link-box {
  display: flex;
  gap: .5rem;
  margin-bottom: 1rem;
}

.link-box input {
  flex: 1;
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: .8rem;
  background: var(--bg);
  cursor: text;
}

.copy-btn {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: inherit;
  font-size: .82rem;
  font-weight: 600;
  padding: 0 1rem;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition);
  flex-shrink: 0;
}

.copy-btn:hover { border-color: var(--accent); color: var(--accent); }
.copy-btn.copied { background: var(--success-dim); border-color: var(--success); color: var(--success); }

/* ─── QR code ─────────────────────────────────────────────────────────────── */
.qr-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .5rem;
  margin: 1rem 0;
}

.qr-label { font-size: .75rem; color: var(--text-dim); }

#qr-canvas {
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  padding: 8px;
  background: #fff;
}

/* ─── Warning / Notice boxes ─────────────────────────────────────────────────── */
.notice {
  display: flex;
  align-items: flex-start;
  gap: .65rem;
  border-radius: var(--radius-sm);
  padding: .75rem 1rem;
  font-size: .83rem;
  line-height: 1.5;
}

.notice svg { flex-shrink: 0; margin-top: .1rem; }

.notice-warn {
  background: rgba(245,158,11,.08);
  border: 1px solid rgba(245,158,11,.2);
  color: #fbbf24;
}

.notice-info {
  background: var(--accent-dim);
  border: 1px solid rgba(108,99,255,.25);
  color: var(--accent);
}

.notice-success {
  background: var(--success-dim);
  border: 1px solid rgba(34,211,165,.25);
  color: var(--success);
}

.notice-danger {
  background: var(--danger-dim);
  border: 1px solid rgba(244,63,94,.2);
  color: var(--danger);
}

/* ─── View page specific ──────────────────────────────────────────────────────── */
.view-state {
  text-align: center;
  padding: .5rem 0;
}

.view-icon {
  width: 72px; height: 72px;
  background: var(--accent-dim);
  border: 1px solid rgba(108,99,255,.3);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  margin: 0 auto 1.25rem;
}

.view-icon.success {
  background: var(--success-dim);
  border-color: rgba(34,211,165,.3);
  color: var(--success);
}

.view-icon.danger {
  background: var(--danger-dim);
  border-color: rgba(244,63,94,.2);
  color: var(--danger);
}

.view-state h2 {
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -.02em;
  margin-bottom: .5rem;
}

.view-state p { font-size: .9rem; color: var(--text-muted); margin-bottom: 1.25rem; }

.expires-badge {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 99px;
  padding: .3rem .75rem;
  font-size: .78rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

/* ─── Secret reveal box ──────────────────────────────────────────────────────── */
.secret-box {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1.1rem 1.25rem;
  font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
  font-size: .9rem;
  line-height: 1.7;
  white-space: pre-wrap;
  word-break: break-all;
  color: var(--text);
  position: relative;
  margin: 1rem 0;
  text-align: left;
  max-height: 320px;
  overflow-y: auto;
}

.secret-actions {
  display: flex;
  gap: .5rem;
  flex-wrap: wrap;
}

.secret-actions .copy-btn {
  flex: 1;
  padding: .6rem;
  text-align: center;
  min-width: 100px;
}

/* ─── Passphrase prompt ──────────────────────────────────────────────────────── */
.passphrase-prompt {
  margin: 1rem 0;
  text-align: left;
}

.passphrase-prompt label {
  margin-bottom: .4rem;
  display: block;
}

.passphrase-prompt .input-wrap {
  display: flex;
  gap: .5rem;
}

.passphrase-prompt input {
  flex: 1;
}

.passphrase-prompt .btn-small {
  background: var(--accent);
  border: none;
  border-radius: var(--radius-sm);
  color: #fff;
  font-family: inherit;
  font-size: .88rem;
  font-weight: 700;
  padding: 0 1.1rem;
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
  transition: all var(--transition);
}

.passphrase-prompt .btn-small:hover { background: var(--accent-hover); }

/* ─── Spinner ─────────────────────────────────────────────────────────────── */
.spinner {
  display: inline-block;
  width: 16px; height: 16px;
  border: 2px solid rgba(255,255,255,.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin .65s linear infinite;
}

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

/* ─── Footer ─────────────────────────────────────────────────────────────────── */
footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem 0;
  text-align: center;
}

footer p {
  font-size: .78rem;
  color: var(--text-dim);
}

footer a {
  color: var(--text-muted);
  text-decoration: none;
}

footer a:hover { color: var(--text); }

/* ─── Utilities ──────────────────────────────────────────────────────────────── */
.hidden { display: none !important; }

.mt-1 { margin-top: .5rem; }
.mt-2 { margin-top: 1rem; }

/* ─── Scrollbar ──────────────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 99px; }

/* ─── Responsive ─────────────────────────────────────────────────────────────── */
@media (max-width: 480px) {
  .card { padding: 1.25rem; }
  .option-group { gap: .3rem; }
  .option-btn { font-size: .78rem; padding: .35rem .65rem; }
  .link-box { flex-direction: column; }
  .link-box input { font-size: .75rem; }
  .secret-actions { flex-direction: column; }
}