:root {
  --bg: #f5f7f8;
  --panel: #ffffff;
  --panel-alt: #eef3f4;
  --text: #14272d;
  --muted: #63757b;
  --line: #dce5e8;
  --blue: #176d8a;
  --blue-soft: #e3f3f7;
  --green: #1b7f5a;
  --green-soft: #e4f6ee;
  --red: #b83c3c;
  --red-soft: #fdeaea;
  --yellow: #9b6a12;
  --yellow-soft: #fff3d8;
  --shadow: 0 16px 36px rgba(20, 39, 45, 0.08);
  --radius: 18px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at 15% 0%, rgba(23, 109, 138, 0.12), transparent 28rem),
    linear-gradient(180deg, #fbfcfc 0%, var(--bg) 100%);
  font-family: Inter, "Segoe UI", Arial, sans-serif;
}

h1, h2, h3, p {
  margin: 0;
}

h1 {
  font-size: clamp(1.45rem, 3vw, 2rem);
  line-height: 1.15;
}

h2 {
  font-size: 1.25rem;
}

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

label {
  display: grid;
  gap: 0.4rem;
  font-weight: 700;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.85rem 0.95rem;
  color: var(--text);
  background: #fff;
  font: inherit;
}

textarea {
  min-height: 84px;
  resize: vertical;
}

button,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: 42px;
  border: 0;
  border-radius: 999px;
  padding: 0.72rem 1.1rem;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

.button.primary,
button.primary {
  color: #fff;
  background: var(--blue);
}

.button.secondary,
button.secondary {
  color: var(--text);
  background: #fff;
  border: 1px solid var(--line);
}

.button.danger,
button.danger {
  color: #fff;
  background: var(--red);
}

.button.small,
button.small {
  min-height: 34px;
  padding: 0.45rem 0.75rem;
  font-size: 0.9rem;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

.full {
  width: 100%;
}

.hidden {
  display: none !important;
}

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

.eyebrow {
  margin-bottom: 0.35rem;
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.login-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1.25rem;
}

.panel {
  background: var(--panel);
  border: 1px solid rgba(220, 229, 232, 0.95);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.login-panel {
  width: min(100%, 470px);
  padding: 1.8rem;
}

.demo-box,
.notice-box,
.key-reveal {
  display: grid;
  gap: 0.7rem;
  margin-top: 1rem;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #fbfdfd;
}

.notice-box {
  margin-top: 0;
  background: var(--blue-soft);
  border-color: #c5e3eb;
}

.key-reveal {
  margin-bottom: 1rem;
  background: var(--green-soft);
  border-color: #bee8d4;
}

.key-code {
  font-size: clamp(1.15rem, 4vw, 1.6rem);
  font-weight: 900;
  letter-spacing: 0.08em;
  word-break: break-word;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1.15rem 1.35rem;
  border-bottom: 1px solid rgba(220, 229, 232, 0.9);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
}

.topbar-actions,
.actions {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.page-shell {
  width: min(1240px, 100%);
  margin: 0 auto;
  padding: 1.25rem;
}

.stack {
  display: grid;
  gap: 1rem;
}

.form-space {
  margin-top: 1rem;
}

.grid {
  display: grid;
  gap: 1rem;
}

.grid.cols-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid.cols-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin-bottom: 1rem;
}

.card {
  padding: 1.1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.card-value {
  margin-top: 0.35rem;
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 900;
  word-break: break-word;
}

.card-note {
  margin-top: 0.4rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.section {
  margin-bottom: 1rem;
  padding: 1.2rem;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1rem;
}

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

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

th,
td {
  padding: 0.85rem 0.65rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

code {
  padding: 0.15rem 0.35rem;
  border-radius: 7px;
  background: var(--panel-alt);
  font-size: 0.9em;
}

.badge {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 0.28rem 0.66rem;
  font-size: 0.82rem;
  font-weight: 800;
  white-space: nowrap;
}

.badge.green {
  color: var(--green);
  background: var(--green-soft);
}

.badge.red {
  color: var(--red);
  background: var(--red-soft);
}

.badge.yellow {
  color: var(--yellow);
  background: var(--yellow-soft);
}

.badge.blue {
  color: var(--blue);
  background: var(--blue-soft);
}

.message {
  margin-bottom: 1rem;
  padding: 0.9rem 1rem;
  border-radius: 14px;
  font-weight: 800;
}

.message.success {
  color: var(--green);
  background: var(--green-soft);
}

.message.error {
  color: var(--red);
  background: var(--red-soft);
}

.message.warning {
  color: var(--yellow);
  background: var(--yellow-soft);
}

.chip-list,
.feature-list {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.chip {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 0.42rem 0.75rem;
  background: var(--panel-alt);
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 800;
}

.checkbox-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 0.7rem;
}

.checkbox-row {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  padding: 0.85rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
}

.checkbox-row input,
.inline-check input {
  width: auto;
  margin-top: 0.2rem;
}

.inline-check {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.empty-state {
  padding: 1rem;
  border: 1px dashed var(--line);
  border-radius: 14px;
  color: var(--muted);
  background: #fbfdfd;
}

@media (max-width: 860px) {
  .grid.cols-2,
  .grid.cols-3 {
    grid-template-columns: 1fr;
  }

  .topbar,
  .section-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .page-shell {
    padding: 1rem;
  }
}