:root {
  --bg: #080808;
  --surface: #111111;
  --surface-2: #1a1a1a;
  --border: #222222;
  --border-hover: #333333;
  --text: #f0f0f0;
  --text-muted: #555555;
  --text-dim: #333333;
  --accent: #c6f135;
  --accent-dark: #a8d020;
  --accent-glow: rgba(198, 241, 53, 0.15);
  --accent-glow-sm: rgba(198, 241, 53, 0.08);
  --error: #ff4d4d;
  --error-bg: rgba(255, 77, 77, 0.08);
  --warning: #f5a623;
  --font-display: 'Syne', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
  --radius: 6px;
  --transition: 0.18s ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 16px; -webkit-font-smoothing: antialiased; }

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-display);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow-x: hidden;
}

.noise {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 0;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 180px;
}

.screen { position: relative; z-index: 1; }

.hidden { display: none !important; }

#redirect-screen,
#password-screen,
#dead-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.redirect-inner {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.redirect-spinner { display: flex; gap: 8px; align-items: center; }

.redirect-spinner span {
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  display: inline-block;
  animation: pulse 1.2s ease-in-out infinite;
}
.redirect-spinner span:nth-child(2) { animation-delay: 0.2s; }
.redirect-spinner span:nth-child(3) { animation-delay: 0.4s; }

@keyframes pulse {
  0%, 80%, 100% { opacity: 0.2; transform: scale(0.8); }
  40% { opacity: 1; transform: scale(1); }
}

.redirect-label {
  font-family: var(--font-mono);
  color: var(--text-muted);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.redirect-code {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 1.4rem;
  font-weight: 500;
}

.password-inner {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 36px;
  width: min(440px, calc(100vw - 48px));
  animation: fadeUp 0.3s ease both;
}

.password-lock {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--accent-glow);
  border: 1px solid rgba(198, 241, 53, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
}

.password-title {
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.password-subtitle {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: -10px;
}

.password-field {
  display: flex;
  gap: 8px;
  width: 100%;
}

.password-input {
  flex: 1;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  padding: 11px 14px;
  outline: none;
  transition: border-color var(--transition);
}

.password-input:focus { border-color: var(--accent); }

.password-btn {
  background: var(--accent);
  border: none;
  border-radius: var(--radius);
  color: #0a0a0a;
  cursor: pointer;
  font-family: var(--font-display);
  font-size: 0.88rem;
  font-weight: 700;
  padding: 11px 20px;
  white-space: nowrap;
  transition: background var(--transition);
}

.password-btn:hover { background: var(--accent-dark); }

.password-error {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--error);
  letter-spacing: 0.02em;
}

.dead-inner {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.dead-code {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-dim);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.dead-reason {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: -0.02em;
}

.dead-back {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent);
  text-decoration: none;
  margin-top: 8px;
  transition: opacity var(--transition);
}

.dead-back:hover { opacity: 0.7; }

#app-screen {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

header {
  padding: 56px 24px 0;
  text-align: center;
  animation: fadeDown 0.5s ease both;
}

@keyframes fadeDown {
  from { opacity: 0; transform: translateY(-16px); }
  to { opacity: 1; transform: translateY(0); }
}

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

.logo {
  font-size: clamp(2rem, 6vw, 3.2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 12px;
}

.logo-domain { color: var(--accent); }
.logo-dot { color: var(--text-dim); }
.logo-brand { color: var(--text); }
.logo-tld { color: var(--text-muted); font-weight: 400; }

.tagline {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 52px 24px 40px;
  gap: 28px;
  max-width: 660px;
  margin: 0 auto;
  width: 100%;
  animation: fadeUp 0.5s 0.1s ease both;
}

.generator-card {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color var(--transition);
}

.generator-card:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent), 0 0 40px var(--accent-glow);
}

.input-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.input-row {
  display: flex;
  gap: 10px;
  align-items: stretch;
}

.url-input {
  flex: 1;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  padding: 12px 16px;
  outline: none;
  transition: border-color var(--transition);
  width: 100%;
  min-width: 0;
}

.url-input::placeholder { color: var(--text-dim); }
.url-input:focus { border-color: var(--border-hover); }

.shorten-btn {
  background: var(--accent);
  border: none;
  border-radius: var(--radius);
  color: #0a0a0a;
  cursor: pointer;
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  padding: 12px 22px;
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  flex-shrink: 0;
}

.shorten-btn:hover { background: var(--accent-dark); box-shadow: 0 0 24px var(--accent-glow); }
.shorten-btn:active { transform: scale(0.97); }
.shorten-btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; box-shadow: none; }

.btn-icon { font-size: 1rem; transition: transform var(--transition); }
.shorten-btn:hover .btn-icon { transform: translateX(3px); }
.shorten-btn.loading .btn-text,
.shorten-btn.loading .btn-icon { display: none; }

.shorten-btn.loading::after {
  content: '';
  width: 16px;
  height: 16px;
  border: 2px solid rgba(0,0,0,0.3);
  border-top-color: #000;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

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

.advanced-toggle-row {
  margin-top: 14px;
  display: flex;
  align-items: center;
}

.advanced-btn {
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 0;
  transition: color var(--transition);
}

.advanced-btn:hover { color: var(--text); }

#advanced-chevron {
  transition: transform 0.2s ease;
  flex-shrink: 0;
}

#advanced-chevron.open { transform: rotate(90deg); }

.advanced-panel {
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.3s ease, opacity 0.3s ease, margin-top 0.3s ease;
  opacity: 0;
  margin-top: 0;
}

.advanced-panel.open {
  max-height: 400px;
  opacity: 1;
  margin-top: 16px;
}

.advanced-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  padding-top: 4px;
  border-top: 1px solid var(--border);
  padding-top: 16px;
}

.advanced-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.adv-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.adv-input {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  padding: 9px 12px;
  outline: none;
  transition: border-color var(--transition);
  width: 100%;
}

.adv-input::placeholder { color: var(--text-dim); }
.adv-input:focus { border-color: var(--border-hover); }

input[type="datetime-local"]::-webkit-calendar-picker-indicator {
  filter: invert(0.4);
  cursor: pointer;
}

.slug-row {
  display: flex;
  align-items: center;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--transition);
}

.slug-row:focus-within { border-color: var(--border-hover); }

.slug-prefix {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-dim);
  padding: 9px 0 9px 10px;
  white-space: nowrap;
  flex-shrink: 0;
}

.slug-input {
  border: none;
  background: transparent;
  padding: 9px 10px;
  border-radius: 0;
  min-width: 0;
}

.slug-input:focus { border-color: transparent; }

.error-msg {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--error);
  margin-top: 14px;
  letter-spacing: 0.02em;
}

.result-section {
  width: 100%;
  animation: resultIn 0.3s ease both;
}

@keyframes resultIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.result-card {
  background: var(--surface);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  padding: 24px 28px;
  box-shadow: 0 0 48px var(--accent-glow-sm);
  margin-bottom: 16px;
}

.result-top {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}

.result-tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--accent);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  background: var(--accent-glow);
  padding: 3px 10px;
  border-radius: 2px;
}

.result-badges {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.badge {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 2px;
  border: 1px solid;
}

.badge-lock { color: var(--warning); border-color: rgba(245, 166, 35, 0.25); background: rgba(245, 166, 35, 0.08); }
.badge-expiry { color: var(--text-muted); border-color: var(--border); background: var(--surface-2); }
.badge-cap { color: var(--text-muted); border-color: var(--border); background: var(--surface-2); }

.result-actions {
  display: flex;
  gap: 8px;
  margin-left: auto;
}

.action-btn {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-muted);
  cursor: pointer;
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 6px 12px;
  display: flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
}

.action-btn:hover { color: var(--text); border-color: var(--border-hover); background: var(--surface); }
.action-btn.copied { color: var(--accent); border-color: var(--accent); }

.short-url-display {
  font-family: var(--font-mono);
  font-size: clamp(1rem, 3.5vw, 1.4rem);
  font-weight: 500;
  color: var(--text);
  letter-spacing: -0.01em;
  word-break: break-all;
  margin-bottom: 16px;
}

.short-url-display span { color: var(--accent); }

.result-original {
  display: flex;
  gap: 8px;
  align-items: flex-start;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}

.original-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  white-space: nowrap;
  padding-top: 2px;
}

.original-url-display {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  word-break: break-all;
  line-height: 1.6;
}

.new-link-btn {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-muted);
  cursor: pointer;
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 10px 20px;
  width: 100%;
  letter-spacing: 0.02em;
  transition: color var(--transition), border-color var(--transition);
}

.new-link-btn:hover { color: var(--text); border-color: var(--border-hover); }

.recent-section { width: 100%; animation: fadeUp 0.3s ease both; }

.recent-title {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.recent-session {
  font-weight: 400;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 0.68rem;
}

.recent-list { list-style: none; display: flex; flex-direction: column; gap: 6px; }

.recent-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  animation: fadeUp 0.25s ease both;
  transition: border-color var(--transition);
}

.recent-item:hover { border-color: var(--border-hover); }

.recent-short {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--accent);
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
}

.recent-original {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
}

.recent-copy {
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--text-dim);
  display: flex;
  align-items: center;
  padding: 4px;
  border-radius: 4px;
  flex-shrink: 0;
  transition: color var(--transition);
  margin-left: auto;
}

.recent-copy:hover { color: var(--text-muted); }

footer {
  text-align: center;
  padding: 20px 24px 32px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-dim);
  letter-spacing: 0.06em;
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
}

.footer-admin {
  color: var(--text-dim);
  text-decoration: none;
  transition: color var(--transition);
}

.footer-admin:hover { color: var(--text-muted); }

@media (max-width: 520px) {
  header { padding-top: 36px; }
  .input-row { flex-direction: column; }
  .shorten-btn { width: 100%; justify-content: center; }
  .result-top { flex-direction: column; align-items: flex-start; }
  .result-actions { margin-left: 0; }
  .advanced-grid { grid-template-columns: 1fr; }
  .recent-item { flex-direction: column; align-items: flex-start; gap: 6px; }
  .recent-original { white-space: normal; word-break: break-all; }
  .recent-copy { align-self: flex-end; margin-left: 0; }
}