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

:root {
  --bg: #0f0f13;
  --surface: #1a1a24;
  --surface2: #22222f;
  --border: #2e2e42;
  --accent: #7c6af7;
  --accent-hover: #9585ff;
  --accent-dim: rgba(124, 106, 247, 0.15);
  --text: #e8e8f0;
  --text-muted: #7a7a9a;
  --success: #4ade80;
  --error: #f87171;
  --warning: #fb923c;
  --radius: 12px;
  --radius-sm: 8px;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 15px;
  line-height: 1.6;
  min-height: 100vh;
}

.page {
  max-width: 680px;
  margin: 0 auto;
  padding: 48px 20px 40px;
  display: flex;
  flex-direction: column;
  gap: 36px;
}

/* ── Header ──────────────────────────────────────────────────────────────── */
.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--accent);
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.tagline {
  color: var(--text-muted);
  font-size: 14px;
  text-align: center;
}

.header-auth {
  display: flex;
  align-items: center;
  gap: 10px;
}

.user-greeting {
  color: var(--text-muted);
  font-size: 13px;
}

.user-greeting strong {
  color: var(--text);
}

.btn-auth {
  background: var(--accent);
  border: none;
  border-radius: var(--radius-sm);
  color: #fff;
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  padding: 7px 16px;
  transition: background 0.2s;
}

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

.btn-logout {
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  cursor: pointer;
  font-size: 13px;
  padding: 6px 12px;
  transition: border-color 0.2s, color 0.2s;
}

.btn-logout:hover {
  border-color: var(--error);
  color: var(--error);
}

/* ── Shorten card ────────────────────────────────────────────────────────── */
.shorten-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

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

#url-input {
  flex: 1;
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 14px;
  padding: 10px 14px;
  outline: none;
  transition: border-color 0.2s;
}

#url-input:focus {
  border-color: var(--accent);
}

#url-input::placeholder {
  color: var(--text-muted);
}

#shorten-btn {
  background: var(--accent);
  border: none;
  border-radius: var(--radius-sm);
  color: #fff;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 22px;
  transition: background 0.2s, transform 0.1s;
  white-space: nowrap;
}

#shorten-btn:hover { background: var(--accent-hover); }
#shorten-btn:active { transform: scale(0.97); }
#shorten-btn:disabled { opacity: 0.6; cursor: not-allowed; }

/* ── Link options ────────────────────────────────────────────────────────── */
.link-options {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-top: 4px;
  border-top: 1px solid var(--border);
}

.options-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.opt-label {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 500;
  min-width: 48px;
  flex-shrink: 0;
}

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

.pill {
  background: none;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 12px;
  font-weight: 500;
  padding: 4px 12px;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
}

.pill:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.pill.active {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent-hover);
}

.alias-input {
  flex: 1;
  min-width: 0;
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 13px;
  padding: 6px 12px;
  outline: none;
  transition: border-color 0.2s;
}

.alias-input:focus { border-color: var(--accent); }
.alias-input::placeholder { color: var(--text-muted); }

/* ── Error ───────────────────────────────────────────────────────────────── */
.error {
  color: var(--error);
  font-size: 13px;
}

/* ── Result ──────────────────────────────────────────────────────────────── */
.result {
  background: var(--accent-dim);
  border: 1px solid rgba(124, 106, 247, 0.3);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  animation: fadeIn 0.25s ease;
}

.result-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.result-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.result-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.short-link {
  color: var(--accent-hover);
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  word-break: break-all;
}

.short-link:hover { text-decoration: underline; }

.original-preview {
  color: var(--text-muted);
  font-size: 12px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 400px;
}

.copy-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--accent);
  border: none;
  border-radius: var(--radius-sm);
  color: #fff;
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  padding: 8px 14px;
  transition: background 0.2s;
  flex-shrink: 0;
}

.copy-btn:hover { background: var(--accent-hover); }
.copy-btn.copied { background: #16a34a; }

/* ── History section ─────────────────────────────────────────────────────── */
.history-section {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

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

.history-header h2 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.icon-btn {
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  cursor: pointer;
  padding: 6px 8px;
  display: flex;
  align-items: center;
  transition: border-color 0.2s, color 0.2s;
}

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

.url-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.empty-state {
  color: var(--text-muted);
  font-size: 14px;
  text-align: center;
  padding: 32px 0;
}

/* ── URL card ────────────────────────────────────────────────────────────── */
.url-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  display: flex;
  align-items: center;
  gap: 14px;
  transition: border-color 0.2s;
}

.url-card:hover { border-color: var(--accent); }

.url-card-info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.url-card-top {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.url-card-short {
  color: var(--accent-hover);
  font-weight: 600;
  font-size: 14px;
  text-decoration: none;
}

.url-card-short:hover { text-decoration: underline; }

.url-card-original {
  color: var(--text-muted);
  font-size: 12px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.url-card-meta {
  display: flex;
  gap: 12px;
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 2px;
}

.url-card-clicks {
  display: flex;
  align-items: center;
  gap: 4px;
}

.url-card-actions {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}

.btn-icon {
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  cursor: pointer;
  padding: 6px;
  display: flex;
  align-items: center;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}

.btn-icon:hover { border-color: var(--accent); color: var(--accent); }
.btn-icon.delete:hover { border-color: var(--error); color: var(--error); }

/* ── Badges ──────────────────────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 2px 8px;
  text-transform: uppercase;
  flex-shrink: 0;
}

.badge-private {
  background: rgba(251, 191, 36, 0.12);
  color: #fbbf24;
  border: 1px solid rgba(251, 191, 36, 0.25);
}

.badge-temp {
  background: rgba(251, 146, 60, 0.12);
  color: #fb923c;
  border: 1px solid rgba(251, 146, 60, 0.25);
}

.badge-standard {
  background: rgba(148, 163, 184, 0.15);
  color: #64748b;
  border: 1px solid rgba(148, 163, 184, 0.3);
}

.expiry-tag {
  font-size: 11px;
  color: var(--warning);
  background: rgba(251, 146, 60, 0.1);
  border: 1px solid rgba(251, 146, 60, 0.2);
  border-radius: 999px;
  padding: 1px 8px;
  flex-shrink: 0;
}

/* ── Auth modal ──────────────────────────────────────────────────────────── */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 20px;
  animation: fadeIn 0.15s ease;
}

.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  width: 100%;
  max-width: 380px;
  position: relative;
  animation: slideUp 0.2s ease;
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  display: flex;
  align-items: center;
  border-radius: 6px;
  transition: color 0.2s, background 0.2s;
}

.modal-close:hover {
  color: var(--text);
  background: var(--surface2);
}

.modal-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 24px;
  background: var(--bg);
  border-radius: var(--radius-sm);
  padding: 4px;
}

.tab-btn {
  flex: 1;
  background: none;
  border: none;
  border-radius: 6px;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  padding: 7px;
  transition: background 0.15s, color 0.15s;
}

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

.tab-btn.active {
  background: var(--surface);
  color: var(--text);
  font-weight: 600;
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

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

.field label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
}

.field input {
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 14px;
  padding: 10px 14px;
  outline: none;
  transition: border-color 0.2s;
}

.field input:focus { border-color: var(--accent); }
.field input::placeholder { color: var(--text-muted); }

.auth-error {
  color: var(--error);
  font-size: 13px;
  margin-top: -4px;
}

.btn-primary-full {
  width: 100%;
  background: var(--accent);
  border: none;
  border-radius: var(--radius-sm);
  color: #fff;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  padding: 11px;
  transition: background 0.2s, transform 0.1s;
  margin-top: 4px;
}

.btn-primary-full:hover { background: var(--accent-hover); }
.btn-primary-full:active { transform: scale(0.98); }

/* ── Toast ───────────────────────────────────────────────────────────────── */
.toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%) translateY(0);
  background: var(--success);
  color: #052e16;
  font-size: 13px;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: 999px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
  transition: opacity 0.3s, transform 0.3s;
  white-space: nowrap;
}

.toast.hidden {
  opacity: 0;
  transform: translateX(-50%) translateY(12px);
  pointer-events: none;
}

/* ── Footer ──────────────────────────────────────────────────────────────── */
footer {
  text-align: center;
  color: var(--text-muted);
  font-size: 12px;
}

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

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

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

/* ── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 480px) {
  .input-row { flex-direction: column; }

  .result-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .copy-btn {
    width: 100%;
    justify-content: center;
  }

  .options-row { flex-direction: column; align-items: flex-start; }

  .header-top { flex-wrap: wrap; gap: 10px; }

  .modal { padding: 24px; }
}