/* Google Material Design 3 */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Roboto', sans-serif; background: #F8F9FA; color: #1C1B1F; min-height: 100vh; }

/* ── MD3 Color Tokens ── */
:root {
  --md-primary: #1A73E8;
  --md-on-primary: #FFFFFF;
  --md-primary-container: #D3E3FD;
  --md-on-primary-container: #041E49;
  --md-secondary: #5F6368;
  --md-on-secondary: #FFFFFF;
  --md-surface: #FFFFFF;
  --md-surface-variant: #E3E2E6;
  --md-on-surface: #1C1B1F;
  --md-on-surface-variant: #46464F;
  --md-background: #F8F9FA;
  --md-outline: #C4C7C5;
  --md-outline-variant: #E2E8F0;
  --md-error: #B3261E;
  --md-on-error: #FFFFFF;
  --md-error-container: #F9DEDC;
  --md-success: #1E8E3E;
  --md-success-container: #CEEAD6;
  --md-warning: #F29900;
  --md-warning-container: #FEF3C7;
  --md-shadow-1: 0 1px 2px rgba(0,0,0,.08), 0 1px 3px 1px rgba(0,0,0,.06);
  --md-shadow-2: 0 1px 2px rgba(0,0,0,.1), 0 2px 6px 2px rgba(0,0,0,.08);
  --md-shadow-3: 0 4px 8px 3px rgba(0,0,0,.1), 0 1px 3px rgba(0,0,0,.12);
}

/* ── Layout ── */
.container { max-width: 1040px; margin: 0 auto; padding: 0 20px; }
.hidden { display: none !important; }


/* ── Top App Bar (MD3) ── */
header {
  background: var(--md-surface);
  color: var(--md-on-surface);
  padding: 0;
  box-shadow: var(--md-shadow-1);
  position: sticky; top: 0; z-index: 50;
  border-bottom: 1px solid var(--md-outline-variant);
}
header .container {
  display: flex; align-items: center;
  justify-content: space-between;
  height: 64px;
}
header h1 {
  font-size: 1.25rem; font-weight: 500;
  color: var(--md-on-surface); letter-spacing: 0;
  display: flex; align-items: center; gap: 10px;
}
header h1 .material-icons {
  color: var(--md-primary); font-size: 1.5rem;
}
header .logout-btn {
  display: inline-flex; align-items: center; gap: 6px;
  background: none; border: 1px solid var(--md-outline);
  color: var(--md-on-surface-variant);
  padding: 8px 20px; border-radius: 20px;
  cursor: pointer; font-size: .875rem; font-weight: 500;
  font-family: 'Roboto', sans-serif;
  transition: background .2s, box-shadow .2s;
}
header .logout-btn:hover {
  background: rgba(26,115,232,.08);
  border-color: var(--md-primary);
  color: var(--md-primary);
}

/* ── Settings Bar ── */
.settings-bar {
  background: var(--md-surface);
  border-bottom: 1px solid var(--md-outline-variant);
  padding: 8px 0; font-size: .8rem;
  color: var(--md-on-surface-variant);
}
.settings-bar .container {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
}
.settings-bar span {
  font-size: .75rem; font-weight: 500;
  color: var(--md-on-surface-variant);
  letter-spacing: .4px; text-transform: uppercase;
}
.settings-bar input {
  padding: 6px 12px;
  border: 1px solid var(--md-outline);
  border-radius: 8px; font-size: .8rem;
  font-family: 'Roboto', sans-serif;
  color: var(--md-on-surface);
  background: var(--md-surface);
  width: 260px; transition: border-color .2s;
}
.settings-bar input:focus {
  outline: none; border-color: var(--md-primary);
  box-shadow: 0 0 0 2px var(--md-primary-container);
}

main { padding: 24px 0 72px; }


/* ── MD3 Cards ── */
.card {
  background: var(--md-surface);
  border-radius: 12px;
  box-shadow: var(--md-shadow-1);
  padding: 24px;
  margin-bottom: 20px;
  border: 1px solid var(--md-outline-variant);
}
.card-header {
  display: flex; align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.card-header h2 {
  font-size: 1.1rem; font-weight: 500;
  color: var(--md-on-surface); letter-spacing: .1px;
  display: flex; align-items: center; gap: 8px;
}
.card-header h2 .material-icons { color: var(--md-primary); font-size: 1.2rem; }

/* ── MD3 Buttons ── */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 24px; border-radius: 20px;
  border: none; cursor: pointer;
  font-size: .875rem; font-weight: 500;
  font-family: 'Roboto', sans-serif;
  letter-spacing: .1px;
  transition: box-shadow .2s, background .2s;
  text-decoration: none; white-space: nowrap;
}
.btn .material-icons { font-size: 1.1rem; }
.btn-primary {
  background: var(--md-primary); color: var(--md-on-primary);
  box-shadow: var(--md-shadow-1);
}
.btn-primary:hover {
  box-shadow: var(--md-shadow-2);
  background: #1558b0;
}
.btn-secondary {
  background: transparent; color: var(--md-primary);
  border: 1px solid var(--md-outline);
}
.btn-secondary:hover { background: rgba(26,115,232,.08); }
.btn-danger {
  background: var(--md-error-container); color: var(--md-error);
  border: 1px solid transparent;
}
.btn-danger:hover { background: #f9c4c2; }
.btn-sm { padding: 6px 14px; font-size: .8rem; border-radius: 16px; }
.btn-copy {
  background: var(--md-success-container); color: var(--md-success);
  border: 1px solid transparent;
}
.btn-copy:hover { background: #b0dfc0; }


/* ── MD3 Badges / Status Chips ── */
.badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 4px 12px; border-radius: 8px;
  font-size: .75rem; font-weight: 500;
  letter-spacing: .1px;
}
.badge .material-icons { font-size: .85rem; }
.badge-active { background: var(--md-success-container); color: var(--md-success); }
.badge-disabled { background: var(--md-error-container); color: var(--md-error); }
.badge-suspended { background: var(--md-warning-container); color: #92600A; }

/* ── MD3 Tables ── */
.table-wrap { overflow-x: auto; border-radius: 8px; }
table { width: 100%; border-collapse: collapse; font-size: .875rem; }
thead { background: #F1F3F4; }
th {
  text-align: left; padding: 12px 16px;
  color: var(--md-on-surface-variant);
  font-weight: 500; font-size: .8rem;
  letter-spacing: .5px; text-transform: uppercase;
  border-bottom: 1px solid var(--md-outline-variant);
  white-space: nowrap;
}
td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--md-outline-variant);
  vertical-align: middle; color: var(--md-on-surface);
}
tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: rgba(26,115,232,.04); }

/* ── Empty State ── */
.empty {
  text-align: center; padding: 48px 20px;
  color: var(--md-on-surface-variant); font-size: .95rem;
}

/* ── Short URL ── */
.short-url {
  font-family: 'Roboto Mono', monospace; font-size: .82rem;
  color: var(--md-primary); word-break: break-all;
}

/* ── Back link ── */
.back-link {
  display: inline-flex; align-items: center; gap: 4px;
  color: var(--md-primary); font-size: .875rem;
  cursor: pointer; margin-bottom: 16px;
  background: none; border: none; padding: 8px 0;
  font-family: 'Roboto', sans-serif; font-weight: 500;
}
.back-link:hover { text-decoration: underline; }


/* ── MD3 Forms / Outlined Text Fields ── */
.form-group { margin-bottom: 18px; position: relative; }
.form-group label {
  display: block; font-size: .85rem; font-weight: 500;
  margin-bottom: 6px; color: var(--md-on-surface-variant);
  letter-spacing: .1px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%; padding: 12px 16px;
  border: 1px solid var(--md-outline);
  border-radius: 8px; font-size: .9rem;
  font-family: 'Roboto', sans-serif;
  color: var(--md-on-surface);
  background: var(--md-surface);
  transition: border-color .2s, box-shadow .2s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--md-primary);
  border-width: 2px;
  box-shadow: 0 0 0 3px var(--md-primary-container);
}
.form-group input:hover,
.form-group select:hover,
.form-group textarea:hover {
  border-color: var(--md-on-surface);
}
.form-group textarea { resize: vertical; min-height: 80px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group small { color: var(--md-on-surface-variant); font-size: .75rem; }
.form-group input[type="checkbox"] {
  width: auto; accent-color: var(--md-primary);
  width: 18px; height: 18px; cursor: pointer;
}
.form-group label.checkbox-label {
  display: flex; align-items: center; gap: 10px; cursor: pointer;
  font-size: .9rem; color: var(--md-on-surface);
}


/* ── MD3 Modal / Dialog ── */
.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.4);
  display: flex; align-items: center; justify-content: center;
  z-index: 100; padding: 16px;
  backdrop-filter: blur(2px);
}
.modal-backdrop.hidden { display: none !important; }
.modal {
  background: var(--md-surface);
  border-radius: 28px;
  padding: 24px; width: 100%; max-width: 540px;
  max-height: 90vh; overflow-y: auto;
  box-shadow: var(--md-shadow-3);
}
.modal h3 {
  font-size: 1.25rem; font-weight: 500;
  color: var(--md-on-surface);
  margin-bottom: 20px; letter-spacing: .1px;
  display: flex; align-items: center; gap: 10px;
}
.modal h3 .material-icons { color: var(--md-primary); }
.modal-footer {
  display: flex; justify-content: flex-end;
  gap: 10px; margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--md-outline-variant);
}

/* ── OG Preview ── */
.og-preview {
  border: 1px solid var(--md-outline-variant);
  border-radius: 12px; overflow: hidden;
  margin-top: 16px; font-size: .82rem;
  background: #F1F3F4;
}
.og-preview img {
  width: 100%; height: 150px;
  object-fit: cover; background: var(--md-surface-variant);
  display: block;
}
.og-preview-body { padding: 12px 16px; }
.og-preview-body .og-title {
  font-weight: 500; margin-bottom: 4px;
  color: var(--md-on-surface);
}
.og-preview-body .og-desc {
  color: var(--md-on-surface-variant); line-height: 1.5;
}


/* ── MD3 Toast ── */
#toast-container {
  position: fixed; bottom: 24px; right: 24px;
  display: flex; flex-direction: column; gap: 8px;
  z-index: 200;
}
.toast {
  padding: 12px 20px; border-radius: 12px;
  font-size: .875rem; font-weight: 500;
  font-family: 'Roboto', sans-serif;
  box-shadow: var(--md-shadow-3);
  animation: slideIn .2s ease;
  min-width: 220px; max-width: 360px;
  display: flex; align-items: center; gap: 10px;
}
.toast .material-icons { font-size: 1.1rem; }
.toast-success { background: #1E8E3E; color: #fff; }
.toast-error { background: var(--md-error); color: #fff; }
.toast-info { background: var(--md-primary); color: #fff; }
@keyframes slideIn {
  from { transform: translateX(60px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

/* ── MD3 Login Screen ── */
#login-screen {
  min-height: 100vh; display: flex;
  align-items: center; justify-content: center;
  background: linear-gradient(135deg, #1A73E8 0%, #0D47A1 100%);
  padding: 20px;
}
.login-card {
  background: var(--md-surface);
  border-radius: 28px;
  padding: 40px 36px; width: 100%; max-width: 400px;
  box-shadow: var(--md-shadow-3);
  text-align: center;
}
.login-card .login-icon {
  width: 64px; height: 64px;
  background: var(--md-primary-container);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 20px;
}
.login-card .login-icon .material-icons {
  color: var(--md-primary); font-size: 2rem;
}
.login-card h2 {
  font-size: 1.5rem; font-weight: 500;
  color: var(--md-on-surface); margin-bottom: 6px;
}
.login-card p {
  color: var(--md-on-surface-variant);
  margin-bottom: 28px; font-size: .9rem;
}
.login-card input {
  width: 100%; padding: 14px 16px;
  border: 1px solid var(--md-outline);
  border-radius: 8px; font-size: .95rem;
  font-family: 'Roboto', sans-serif;
  color: var(--md-on-surface); margin-bottom: 16px;
  transition: border-color .2s;
}
.login-card input:focus {
  outline: none; border-color: var(--md-primary);
  border-width: 2px;
  box-shadow: 0 0 0 3px var(--md-primary-container);
}
.login-card button {
  width: 100%; padding: 14px;
  background: var(--md-primary); color: var(--md-on-primary);
  border: none; border-radius: 20px;
  font-size: 1rem; font-weight: 500;
  font-family: 'Roboto', sans-serif;
  cursor: pointer; letter-spacing: .1px;
  box-shadow: var(--md-shadow-1);
  transition: box-shadow .2s, background .2s;
  display: flex; align-items: center; justify-content: center; gap: 8px;
}
.login-card button:hover {
  background: #1558b0;
  box-shadow: var(--md-shadow-2);
}

/* ── Responsive ── */
@media (max-width: 600px) {
  .form-row { grid-template-columns: 1fr; }
  .card { padding: 16px; }
  table { font-size: .8rem; }
  th, td { padding: 10px 8px; }
  .modal { border-radius: 20px; padding: 20px; }
  header .container { height: 56px; }
  .settings-bar input { width: 160px; }
  .btn { padding: 8px 16px; font-size: .82rem; }
}