:root {
  --bg: #F7F2EA;
  --surface: #FFFFFF;
  --surface-soft: #FDFBF7;
  --gold-soft: #F0E6D2;
  --gold-pale: #F6EDD8;
  --gold-cream: #FDF6E7;
  --text: #2B2118;
  --muted: #6B5D4D;
  --muted-light: #8A7A64;
  --muted-light: #8A7A64;
  --placeholder: #B3A695;
  --border: #E4D8C3;
  --border-input: #D8CBB2;
  --border-gold: #E0D2B8;
  --divider: #EFE5D2;
  --maroon: #6E1319;
  --primary: #7A1B21;
  --primary-hover: #8F2229;
  --primary-dark: #5C1217;
  --gold: #C9A227;
  --gold-dark: #8B6B14;
  --header-text: #E8C9A8;
  --header-link: #EBD9C2;
  --cream: #F2E8D8;
  --danger: #B02A30;
  --danger-text: #8C2126;
  --danger-soft: #FBEDEC;
  --danger-border: #E5B9B6;
  --success: #2F6B3A;
  --success-soft: #EDF5EC;
  --success-border: #C3DCC2;
  --shadow: 0 2px 10px rgba(64, 42, 15, .06);
  --radius: 8px;
  --radius-card: 10px;
  --font-body: 'Be Vietnam Pro', system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-serif: 'Lora', Georgia, serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --shell: 1160px;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  overflow-x: hidden;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: var(--font-body);
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

a:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

code {
  font-family: var(--font-mono);
  font-size: .9em;
  background: var(--gold-soft);
  color: var(--primary);
  padding: 2px 8px;
  border-radius: 5px;
  white-space: nowrap;
}

img {
  max-width: 100%;
}

input::placeholder {
  color: var(--placeholder);
}

.shell {
  width: min(100% - 48px, var(--shell));
  margin: 0 auto;
}

.skip-link {
  position: absolute;
  top: -56px;
  left: 16px;
  z-index: 20;
  padding: 10px 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.skip-link:focus {
  top: 12px;
}

/* Dải trang trí đầu trang */
.top-stripe {
  height: 4px;
  background: var(--gold);
}

.site-header {
  background: var(--maroon);
  border-bottom: 3px solid var(--gold);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  padding: 16px 0;
}

.brand {
  min-width: 0;
  display: inline-flex;
  align-items: center;
  gap: 14px;
  color: #FFFFFF;
}

.brand:hover {
  color: #FFFFFF;
  text-decoration: none;
}

.brand-mark {
  width: 52px;
  height: 52px;
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #FFFFFF;
  border-radius: 50%;
  box-shadow: 0 0 0 2px rgba(201, 162, 39, .55);
}

.brand-mark img {
  width: 46px;
  height: 46px;
  display: block;
  border-radius: 50%;
  object-fit: contain;
}

.brand-text {
  min-width: 0;
  display: grid;
  gap: 2px;
}

.brand-text strong,
.brand-text span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.brand-text strong {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 19px;
  line-height: 1.2;
  letter-spacing: .2px;
  color: #FFFFFF;
  text-transform: uppercase;
}

.brand-text span {
  color: var(--header-text);
  font-size: 14px;
}

.site-nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  flex-wrap: wrap;
}

.site-nav a {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 13px;
  border-radius: 6px;
  color: var(--header-link);
  font-size: .9rem;
  font-weight: 500;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: #FFFFFF;
  background: rgba(255, 255, 255, .08);
  text-decoration: none;
}

.site-main {
  flex: 1;
  padding: 0 0 30px;
}

.site-footer {
  background: var(--maroon);
  border-top: 3px solid var(--gold);
  color: var(--header-text);
  font-size: 12px;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  text-align: center;
  padding: 16px 0;
}

.footer-inner strong {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 15px;
  color: var(--cream);
  text-transform: uppercase;
}

.page-hero {
  text-align: center;
  padding: 30px 0 30px;
}

.dashboard-head {
  padding: 30px 0 30px;
}

.eyebrow {
  margin: 0;
  color: var(--gold-dark);
  font-size: 36px;
  font-weight: 700;
  letter-spacing: 2.5px;
  text-transform: uppercase;
}

.eyebrow-lined {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}

.eyebrow-lined::before,
.eyebrow-lined::after {
  content: "";
  display: block;
  width: 36px;
  height: 1px;
  background: var(--gold);
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 700;
  line-height: 1.18;
  color: var(--text);
}

h1 {
  font-size: clamp(30px, 4.6vw, 50px);
}

.page-hero h1 {
  max-width: 760px;
  margin: 18px auto 14px;
}

.dashboard-head h1 {
  margin: 14px 0 10px;
  font-size: clamp(28px, 4vw, 40px);
}

h2 {
  font-size: 23px;
}

h3 {
  font-weight: 600;
  font-size: 18px;
}

.hero-copy {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.65;
}

.page-hero .hero-copy {
  max-width: 620px;
  margin: 0 auto;
}

.dashboard-head .hero-copy {
  max-width: 640px;
  font-size: 15px;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow);
}

.input-panel,
.result-panel,
.admin-panel,
.auth-panel,
.edit-layout .panel {
  padding: 24px;
}

.input-panel,
.auth-panel,
.edit-layout .panel {
  border-top: 4px solid var(--primary);
}

.result-panel,
.admin-panel {
  border-top: 4px solid var(--gold);
}

.panel-heading {
  margin-bottom: 26px;
}

.result-panel .panel-heading {
  margin-bottom: 10px;
}

.panel-heading h2 {
  margin-bottom: 6px;
}

.panel-heading p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

.alerts {
  display: grid;
  gap: 10px;
  padding-top: 24px;
}

.alert {
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 13.5px;
  line-height: 1.55;
}

.alert-success {
  color: var(--success);
  background: var(--success-soft);
  border-color: var(--success-border);
}

.alert-error {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  color: var(--danger-text);
  background: var(--danger-soft);
  border-color: var(--danger-border);
}

.alert-error::before {
  content: "";
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--danger);
  margin-top: 6px;
}

.field {
  display: grid;
  gap: 8px;
}

.field label,
.short-result label {
  color: var(--text);
  font-size: 14px;
  font-weight: 600;
}

.field input {
  width: 100%;
  min-height: 48px;
  padding: 0 16px;
  border: 1.5px solid var(--border-input);
  border-radius: var(--radius);
  color: var(--text);
  background: var(--surface-soft);
  font: inherit;
  font-size: 15px;
  outline: none;
}

.field-help {
  margin: 0;
  color: var(--muted-light);
  font-size: 13px;
  line-height: 1.6;
}

.button {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border: 1.5px solid transparent;
  border-radius: var(--radius);
  font: inherit;
  font-size: 14.5px;
  font-weight: 600;
  cursor: pointer;
  text-align: center;
  transition: background-color .15s ease, border-color .15s ease, color .15s ease;
}

.button:hover {
  text-decoration: none;
}

.button:focus-visible,
a:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(122, 27, 33, .26);
  outline-offset: 2px;
}

input:focus,
input:focus-visible {
  outline: none;
}

.button-primary {
  min-height: 50px;
  color: #FFFFFF;
  background: var(--primary);
  font-size: 15.5px;
  letter-spacing: .3px;
  box-shadow: 0 2px 6px rgba(122, 27, 33, .28);
}

.button-primary:hover {
  color: #FFFFFF;
  background: var(--primary-hover);
}

.button-primary:active {
  background: var(--primary-dark);
}

.button-secondary {
  color: var(--gold-dark);
  background: var(--gold-cream);
  border-color: var(--gold);
}

.button-secondary:hover {
  color: var(--gold-dark);
  background: var(--gold-pale);
}

.button-secondary.copied {
  color: #FFFFFF;
  background: var(--success);
  border-color: var(--success);
}

.button-ghost {
  color: var(--primary);
  background: #FFFFFF;
  border-color: var(--border-input);
}

.button-ghost:hover {
  color: var(--primary);
  background: var(--surface-soft);
  border-color: var(--primary);
}

.button-danger {
  color: var(--danger);
  background: #FFFFFF;
  border-color: var(--danger-border);
}

.button-danger:hover {
  color: #FFFFFF;
  background: var(--danger);
  border-color: var(--danger);
}

.button-small {
  min-height: 34px;
  padding: 7px 12px;
  font-size: 13px;
}

.workspace-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 420px), 1fr));
  gap: 28px;
  align-items: start;
}

.shorten-form,
.stack-form {
  display: grid;
  gap: 22px;
}

.shorten-form .button-primary,
.stack-form .button-primary {
  width: 100%;
}

.alias-control {
  display: flex;
  flex-wrap: wrap;
  border: 1.5px solid var(--border-input);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface-soft);
}

.alias-prefix {
  display: flex;
  align-items: center;
  min-height: 48px;
  padding: 0 14px;
  background: var(--gold-soft);
  color: var(--gold-dark);
  border-right: 1px solid var(--border-gold);
  font-family: var(--font-mono);
  font-size: 14px;
  white-space: nowrap;
}

.alias-control input {
  flex: 1;
  min-width: 140px;
  min-height: 48px;
  padding: 0 14px;
  font: inherit;
  font-size: 15px;
  color: var(--text);
  background: transparent;
  border: none;
  outline: none;
}

.panel-heading p.status-pill,
p.status-pill {
  width: max-content;
  margin: 0 0 12px;
  padding: 5px 14px;
  border-radius: 999px;
  color: var(--gold-dark);
  background: var(--gold-pale);
  border: 1px solid var(--border-gold);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  line-height: normal;
}

.short-result {
  display: grid;
  gap: 8px;
}

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

.copy-row a {
  flex: 1;
  min-width: 220px;
  display: block;
  height: 48px;
  line-height: 45px;
  padding: 0 16px;
  border: 1.5px solid var(--border-gold);
  border-radius: var(--radius);
  color: var(--primary);
  background: var(--gold-cream);
  font-family: var(--font-mono);
  font-size: 14.5px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.copy-row a:hover {
  color: var(--primary-dark);
  text-decoration: none;
}

.copy-row .copy-btn {
  min-height: 48px;
  padding: 0 22px;
}

.qr-card {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  align-items: flex-start;
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--divider);
}

.qr-card img {
  flex: none;
  width: 148px;
  height: 148px;
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  background: #FFFFFF;
}

.qr-card > div {
  flex: 1;
  min-width: 200px;
}

.qr-card p {
  margin: 10px 0 12px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
}

.qr-card .button {
  min-height: 42px;
  padding: 0 20px;
  font-size: 14px;
}

.original-url {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--divider);
}

.original-url span {
  display: block;
  margin-bottom: 6px;
  color: var(--gold-dark);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

.original-url p {
  margin: 0;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.6;
  word-break: break-all;
}

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 0;
  padding: 48px 20px;
  border: 1.5px dashed var(--border-input);
  border-radius: var(--radius-card);
  background: var(--surface-soft);
  color: var(--muted-light);
}

.empty-state h2 {
  margin: 18px 0 8px;
  font-weight: 600;
  font-size: 20px;
}

.empty-state p {
  margin: 0;
  max-width: 320px;
  font-size: 14px;
  line-height: 1.65;
}

.empty-state p strong {
  color: var(--primary);
}

.empty-icon {
  width: 56px;
  height: 56px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  color: var(--gold-dark);
  background: var(--gold-soft);
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 700;
}

.dashboard-head {
  display: grid;
  gap: 16px;
}

.stat-card {
  display: grid;
  gap: 4px;
  width: 100%;
  padding: 18px 20px;
  border: 1px solid var(--border);
  border-top: 4px solid var(--gold);
  border-radius: var(--radius-card);
  background: var(--surface);
  box-shadow: var(--shadow);
  text-align: center;
}

.stat-card span {
  color: var(--gold-dark);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

.stat-card strong {
  color: var(--text);
  font-family: var(--font-serif);
  font-size: 2rem;
  line-height: 1.15;
}

.admin-toolbar {
  display: grid;
  gap: 12px;
  margin-bottom: 20px;
}

.table-wrap {
  display: none;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.admin-table th,
.admin-table td {
  padding: 13px 12px;
  border-bottom: 1px solid var(--divider);
  text-align: left;
  vertical-align: middle;
}

.admin-table th {
  color: var(--gold-dark);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.admin-table tr:hover td {
  background: var(--surface-soft);
}

.admin-table td.orig {
  max-width: 420px;
  color: var(--muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.num {
  text-align: right !important;
}

.actions-head {
  text-align: right !important;
}

.code-link {
  display: inline-flex;
  max-width: 100%;
  padding: 4px 10px;
  border-radius: 6px;
  color: var(--primary);
  background: var(--gold-cream);
  border: 1px solid var(--border-gold);
  font-family: var(--font-mono);
  font-size: 13.5px;
  font-weight: 600;
  overflow-wrap: anywhere;
}

.muted {
  color: var(--muted-light);
}

.action-group {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 8px;
}

.action-group.wrap {
  justify-content: flex-start;
  flex-wrap: wrap;
}

.action-group form {
  margin: 0;
}

.admin-cards {
  display: grid;
  gap: 12px;
}

.admin-card {
  display: grid;
  gap: 10px;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  background: var(--surface-soft);
}

.admin-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.admin-card-top span {
  flex: 0 0 auto;
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
}

.admin-card-url {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.55;
  overflow-wrap: anywhere;
}

.admin-card .muted {
  margin: 0;
  font-size: 13px;
}

.admin-empty {
  min-height: 300px;
}

.pager {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 20px;
}

.pager span {
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
}

.auth-layout,
.edit-layout {
  min-height: min(560px, calc(100vh - 260px));
  display: grid;
  align-items: center;
  justify-items: center;
  padding-top: 48px;
}

.auth-panel,
.edit-layout .panel {
  width: min(100%, 520px);
}

.auth-panel h1,
.edit-layout h1 {
  margin: 12px 0 10px;
  font-size: clamp(26px, 4vw, 34px);
}

.auth-panel .hero-copy,
.edit-layout .hero-copy {
  margin-bottom: 26px;
  font-size: 15px;
}

.center {
  text-align: center;
}

.center .button {
  margin-top: 10px;
}

.form-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

@media (max-width: 759px) {
  .shell {
    width: min(100% - 32px, var(--shell));
  }

  .footer-inner {
    padding: 20px 0;
  }

  .qr-card img {
    width: 132px;
    height: 132px;
  }

  .action-group .button,
  .action-group form,
  .action-group form .button {
    flex: 1 1 auto;
  }

  .form-actions .button {
    width: 100%;
  }
}

@media (min-width: 560px) {
  .shorten-form .button-primary,
  .stack-form .button-primary {
    width: 100%;
  }

  .admin-toolbar {
    grid-template-columns: 1fr auto;
    align-items: center;
  }
}

@media (min-width: 760px) {
  .input-panel,
  .result-panel,
  .admin-panel,
  .auth-panel,
  .edit-layout .panel {
    padding: 32px;
  }

  .dashboard-head {
    grid-template-columns: minmax(0, 1fr) 200px;
    align-items: end;
  }

  .table-wrap {
    display: block;
    overflow-x: auto;
  }

  .admin-cards {
    display: none;
  }
}