:root {
  color-scheme: light;
  --bg: #f5f7f8;
  --surface: #ffffff;
  --surface-2: #eef3f1;
  --line: #d9e1dd;
  --ink: #17211d;
  --muted: #65736d;
  --accent: #0f766e;
  --accent-strong: #115e59;
  --accent-soft: #d9f2ee;
  --warning: #b45309;
  --danger: #b42318;
  --shadow: 0 18px 55px rgba(21, 38, 31, 0.1);
  --landing-max: 1120px;
  --landing-gutter: clamp(20px, 5vw, 56px);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.app-shell {
  display: grid;
  min-height: 100vh;
  grid-template-columns: 280px minmax(0, 1fr);
}

.sidebar {
  display: flex;
  min-height: 100vh;
  flex-direction: column;
  gap: 28px;
  border-right: 1px solid var(--line);
  background: #fbfcfc;
  padding: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  width: 52px;
  height: 52px;
  flex: 0 0 52px;
  border-radius: 12px;
  object-fit: contain;
}

.brand h1,
.brand p,
.topbar h2,
.panel-heading h2,
.panel-heading h3 {
  margin: 0;
}

.brand h1 {
  font-size: 17px;
  line-height: 1.2;
}

.brand p,
.session-label,
.eyebrow,
label span,
.metric-card span {
  color: var(--muted);
  font-size: 12px;
}

.brand a {
  color: inherit;
  font-weight: 700;
  text-decoration: none;
}

.brand a:hover {
  color: var(--accent);
  text-decoration: underline;
}

.nav-tabs {
  display: grid;
  gap: 8px;
}

.nav-tab {
  width: 100%;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--muted);
  padding: 11px 12px;
  text-align: left;
}

.nav-tab:hover,
.nav-tab.active {
  background: var(--surface-2);
  color: var(--ink);
}

.session-panel {
  display: grid;
  gap: 10px;
  margin-top: auto;
  border-top: 1px solid var(--line);
  padding-top: 18px;
}

.session-panel strong {
  overflow-wrap: anywhere;
  font-size: 14px;
}

.main {
  min-width: 0;
  padding: 32px;
}

.signed-out .app-shell {
  display: block;
}

.signed-out .sidebar {
  display: none;
}

.signed-out .main {
  padding: 0;
}

.auth-surface {
  display: grid;
  min-height: calc(100vh - 64px);
  place-items: center;
}

.landing-page {
  display: block;
  min-height: 100vh;
  background: #f3f6f5;
}

.landing-nav {
  position: fixed;
  z-index: 3;
  top: 0;
  left: 0;
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  border-bottom: 1px solid rgba(217, 225, 221, 0.78);
  background: rgba(251, 252, 252, 0.92);
  padding: 14px var(--landing-gutter);
}

.landing-nav .brand strong,
.section-heading h2,
.landing-hero h1,
.landing-hero p {
  margin: 0;
}

.landing-actions,
.landing-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.landing-actions a,
.landing-cta a {
  text-decoration: none;
}

.landing-hero {
  position: relative;
  display: grid;
  width: min(var(--landing-max), calc(100% - (var(--landing-gutter) * 2)));
  min-height: 640px;
  margin: 0 auto;
  grid-template-columns: minmax(0, 0.95fr) minmax(360px, 0.72fr);
  gap: clamp(28px, 6vw, 80px);
  overflow: hidden;
  align-items: center;
  padding: 106px 0 50px;
}

.landing-scene {
  position: relative;
  z-index: 1;
  overflow: hidden;
  grid-column: 2;
  grid-row: 1;
}

.hero-board {
  display: grid;
  gap: 14px;
  border: 1px solid rgba(217, 225, 221, 0.92);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 18px 55px rgba(21, 38, 31, 0.09);
  padding: 18px;
}

.hero-board-header,
.hero-usage-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.hero-board-header {
  border-bottom: 1px solid var(--line);
  padding-bottom: 14px;
}

.hero-board-header span,
.hero-usage-line span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.hero-board-header strong {
  border-radius: 999px;
  background: #dcfce7;
  color: #166534;
  padding: 6px 10px;
  font-size: 12px;
}

.hero-provider-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.hero-provider-grid span {
  display: grid;
  min-height: 96px;
  place-items: center;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8faf9;
  color: #17211d;
  font-size: 13px;
  font-weight: 800;
  text-align: center;
}

.hero-provider-grid img {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

.hero-usage-line {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
  padding: 13px 14px;
}

.hero-usage-line strong {
  font-size: 20px;
}

.hero-usage-line.saved {
  border-color: rgba(15, 118, 110, 0.24);
  background: #edf8f5;
}

.landing-hero-content {
  position: relative;
  z-index: 1;
  display: grid;
  max-width: 780px;
  gap: 22px;
  grid-column: 1;
  grid-row: 1;
}

.landing-hero h1 {
  max-width: 700px;
  font-size: clamp(52px, 6.5vw, 88px);
  line-height: 1;
  letter-spacing: 0;
}

.landing-hero-content > p:not(.eyebrow) {
  max-width: 560px;
  color: #41504a;
  font-size: 25px;
  line-height: 1.35;
}

.landing-how-section {
  display: grid;
  width: min(var(--landing-max), calc(100% - (var(--landing-gutter) * 2)));
  margin: 0 auto;
  gap: 20px;
  padding: 28px 0 42px;
}

.section-heading > p:not(.eyebrow) {
  max-width: 680px;
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.55;
}

.how-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.how-steps article {
  display: grid;
  gap: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
  box-shadow: 0 12px 34px rgba(21, 38, 31, 0.05);
  padding: 18px;
}

.how-steps span {
  color: var(--accent);
  font-size: 12px;
  font-weight: 900;
}

.how-steps h3,
.how-steps p {
  margin: 0;
}

.how-steps h3 {
  font-size: 16px;
}

.how-steps p {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
}

.landing-models {
  display: grid;
  gap: 20px;
  width: min(var(--landing-max), calc(100% - (var(--landing-gutter) * 2)));
  margin: 0 auto;
  padding: 18px 0 64px;
}

.section-heading {
  display: grid;
  gap: 6px;
}

.section-heading h2 {
  font-size: 28px;
}

.landing-model-list {
  display: grid;
  overflow: hidden;
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
  box-shadow: 0 16px 46px rgba(21, 38, 31, 0.06);
}

.landing-model-row {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(120px, 0.75fr) minmax(120px, 0.75fr) minmax(110px, 0.6fr);
  gap: 12px;
  align-items: center;
  border-bottom: 1px solid var(--line);
  padding: 13px 16px;
}

.landing-model-row:last-child {
  border-bottom: 0;
}

.landing-model-row.header {
  background: var(--surface-2);
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
}

.landing-price::before {
  display: none;
}

.landing-auth-section {
  display: grid;
  width: min(var(--landing-max), calc(100% - (var(--landing-gutter) * 2)));
  margin: 0 auto;
  grid-template-columns: minmax(0, 0.9fr) minmax(360px, 440px);
  gap: clamp(24px, 5vw, 70px);
  align-items: center;
  padding: 22px 0 70px;
}

.landing-docs-section {
  display: grid;
  width: min(var(--landing-max), calc(100% - (var(--landing-gutter) * 2)));
  margin: 0 auto;
  gap: 16px;
  border-top: 1px solid var(--line);
  padding: 30px 0 56px;
}

.landing-docs-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.landing-footer {
  display: flex;
  width: min(var(--landing-max), calc(100% - (var(--landing-gutter) * 2)));
  margin: 0 auto;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border-top: 1px solid var(--line);
  padding: 22px 0 34px;
}

.footer-company,
.footer-links {
  display: flex;
  align-items: center;
  gap: 14px;
}

.footer-company {
  color: var(--muted);
  font-size: 13px;
}

.footer-company a,
.footer-links a {
  color: var(--ink);
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
}

.footer-company a:hover,
.footer-links a:hover {
  color: var(--accent);
  text-decoration: underline;
}

.footer-links {
  flex-wrap: wrap;
  justify-content: flex-end;
}

.auth-heading {
  align-content: center;
}

.auth-heading h2 {
  font-size: clamp(32px, 4vw, 48px);
  line-height: 1.05;
}

.auth-heading p:not(.eyebrow) {
  max-width: 430px;
  margin: 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.5;
}

.landing-page .auth-panel {
  width: 100%;
  margin: 0;
  box-shadow: 0 18px 55px rgba(21, 38, 31, 0.08);
}

.auth-panel-heading {
  margin-bottom: 18px;
}

.auth-panel,
.panel,
.metric-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.auth-panel {
  width: min(440px, 100%);
  padding: 24px;
}

.panel-heading {
  display: grid;
  gap: 6px;
  margin-bottom: 20px;
}

.panel-heading h2 {
  font-size: 24px;
}

.panel-heading h3 {
  font-size: 16px;
}

.panel-heading.compact {
  margin-bottom: 16px;
}

.eyebrow {
  margin: 0;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.segmented-control {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  margin-bottom: 20px;
  border-radius: 8px;
  background: var(--surface-2);
  padding: 5px;
}

.segment {
  border: 0;
  border-radius: 6px;
  background: transparent;
  padding: 11px 10px;
  color: var(--muted);
  font-weight: 700;
}

.segment.active {
  background: white;
  color: var(--ink);
  box-shadow: 0 1px 5px rgba(10, 30, 20, 0.1);
}

.stack {
  display: grid;
  gap: 16px;
}

.top-up-form {
  display: grid;
  grid-template-columns: minmax(160px, 220px) auto;
  gap: 12px;
  align-items: end;
}

.auto-recharge-form {
  display: grid;
  grid-template-columns: minmax(150px, 190px) minmax(150px, 190px) auto auto;
  gap: 12px;
  align-items: end;
}

.status-line {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
  margin: 12px 0 0;
}

label {
  display: grid;
  gap: 7px;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
  color: var(--ink);
  padding: 11px 12px;
  outline: none;
}

textarea {
  min-height: 160px;
  resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.masked-key {
  background: #f8faf9;
  color: var(--muted);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

.button {
  min-height: 42px;
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 10px 14px;
  font-weight: 700;
}

.button.primary {
  background: var(--accent);
  color: white;
}

.button.primary:hover {
  background: var(--accent-strong);
}

.button.secondary {
  border-color: var(--line);
  background: white;
  color: var(--ink);
}

.full-width {
  width: 100%;
}

.workspace {
  display: grid;
  gap: 22px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.topbar h2 {
  font-size: 28px;
}

.alert {
  border: 1px solid var(--line);
  border-left: 4px solid var(--accent);
  border-radius: 8px;
  background: white;
  padding: 12px 14px;
  color: var(--ink);
}

.alert.error {
  border-left-color: var(--danger);
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.history-summary-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 16px;
}

.metric-card {
  display: grid;
  gap: 10px;
  min-height: 118px;
  padding: 20px;
}

.metric-card strong {
  font-size: 30px;
}

.content-grid {
  display: grid;
  gap: 16px;
}

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

.content-grid.wide-left {
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
}

.view {
  display: grid;
  gap: 18px;
}

.panel {
  min-width: 0;
  padding: 20px;
}

.key-display,
.response-box {
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8faf9;
  color: #23312c;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 13px;
  line-height: 1.55;
  overflow-wrap: anywhere;
  padding: 14px;
}

.key-action-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  align-items: stretch;
}

.key-action-row .key-display {
  min-width: 0;
}

.created-key {
  display: grid;
  gap: 8px;
  margin-top: 16px;
}

.response-box {
  min-height: 315px;
  margin: 0;
  white-space: pre-wrap;
}

.docs-panel {
  display: grid;
  gap: 16px;
}

.docs-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.doc-block {
  display: grid;
  gap: 8px;
}

.doc-block h4,
.doc-block p {
  margin: 0;
}

.doc-block h4 {
  font-size: 14px;
}

.doc-block p {
  color: var(--muted);
  line-height: 1.55;
}

.model-copy-block {
  margin-top: 4px;
}

.docs-model-list {
  display: grid;
  gap: 10px;
}

.doc-model-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfb;
  padding: 10px;
}

.doc-model-copy {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.doc-model-provider {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.doc-model-id {
  display: block;
  overflow-wrap: anywhere;
  color: #23312c;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 13px;
}

.code-block {
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8faf9;
  color: #23312c;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 13px;
  line-height: 1.55;
  margin: 0;
  padding: 14px;
  white-space: pre-wrap;
}

.list {
  display: grid;
  gap: 10px;
}

.list-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
}

.model-table,
.history-table,
.admin-users-table {
  display: grid;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.model-row,
.history-row,
.admin-user-row {
  display: grid;
  gap: 12px;
  align-items: center;
  border-bottom: 1px solid var(--line);
  padding: 13px 14px;
}

.model-row {
  grid-template-columns:
    minmax(0, 1.4fr) minmax(120px, 0.75fr) minmax(120px, 0.75fr)
    minmax(110px, 0.6fr);
}

.history-row {
  grid-template-columns:
    minmax(120px, 0.75fr) minmax(0, 1.35fr) minmax(150px, 0.9fr)
    minmax(110px, 0.65fr) minmax(120px, 0.65fr);
}

.admin-user-row {
  grid-template-columns:
    minmax(0, 1.4fr) minmax(140px, 0.8fr) minmax(90px, 0.5fr)
    minmax(110px, 0.65fr) minmax(110px, 0.65fr);
}

.model-row:last-child,
.history-row:last-child,
.admin-user-row:last-child {
  border-bottom: 0;
}

.model-row.header,
.history-row.header,
.admin-user-row.header {
  background: var(--surface-2);
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
}

.history-row small,
.admin-user-row small {
  display: block;
  margin-top: 3px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.35;
  overflow-wrap: anywhere;
}

.model-name {
  overflow-wrap: anywhere;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 13px;
}

.provider-lockup {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 11px;
  align-items: center;
  min-width: 0;
}

.provider-lockup small {
  display: block;
  margin-top: 3px;
  color: var(--muted);
  font-size: 12px;
}

.provider-logo {
  width: 38px;
  height: 38px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
  object-fit: contain;
  padding: 7px;
}

.provider-logo.fallback {
  display: grid;
  place-items: center;
  background: #111827;
  color: white;
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0;
}

.model-price {
  font-weight: 700;
}

.discount-badge {
  width: fit-content;
  border-radius: 999px;
  background: #dcfce7;
  color: #166534;
  padding: 5px 9px;
  font-size: 12px;
  font-weight: 800;
}

.admin-pricing-table {
  display: grid;
  gap: 10px;
}

.admin-model-row {
  display: grid;
  grid-template-columns:
    minmax(0, 1.25fr) minmax(120px, 0.7fr) minmax(120px, 0.7fr)
    minmax(120px, 0.65fr) auto;
  gap: 10px;
  align-items: end;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
}

.admin-model-row label {
  gap: 5px;
}

.admin-model-row input {
  min-width: 0;
}

.list-item strong,
.list-item code {
  overflow-wrap: anywhere;
}

.list-item code {
  color: var(--muted);
}

.status-pill {
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  padding: 5px 9px;
  font-size: 12px;
  font-weight: 700;
}

.status-pill.revoked {
  background: #fef3c7;
  color: var(--warning);
}

.hidden {
  display: none !important;
}

@media (max-width: 900px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    min-height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .brand-mark {
    width: 40px;
    height: 40px;
    flex-basis: 40px;
    border-radius: 10px;
  }

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

  .main {
    padding: 20px;
  }

  .metric-grid,
  .history-summary-grid,
  .content-grid.two-column,
  .content-grid.wide-left,
  .docs-grid,
  .landing-docs-grid,
  .how-steps {
    grid-template-columns: 1fr;
  }

  .model-row,
  .history-row,
  .admin-user-row,
  .landing-model-row {
    grid-template-columns: 1fr;
  }

  .doc-model-item {
    grid-template-columns: 1fr;
  }

  .model-row.header,
  .history-row.header,
  .admin-user-row.header,
  .landing-model-row.header {
    display: none;
  }

  .landing-price::before {
    content: attr(data-label);
    display: block;
    margin-bottom: 4px;
    color: var(--muted);
    font-size: 11px;
    font-weight: 800;
    text-transform: uppercase;
  }

  .admin-model-row {
    grid-template-columns: 1fr;
  }

  .key-action-row {
    grid-template-columns: 1fr;
  }

  .top-up-form,
  .auto-recharge-form {
    grid-template-columns: 1fr;
  }

  .landing-nav {
    position: relative;
    align-items: stretch;
    flex-direction: column;
  }

  .landing-actions {
    display: none;
  }

  .landing-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer-company,
  .footer-links {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
  }

  .landing-hero {
    grid-template-columns: 1fr;
    min-height: 78vh;
    padding-top: 44px;
  }

  .landing-hero-content,
  .landing-scene {
    grid-column: 1;
    grid-row: auto;
  }

  .landing-scene {
    order: 2;
  }

  .hero-provider-grid {
    grid-template-columns: 1fr;
  }

  .landing-auth-section {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .topbar {
    align-items: stretch;
    flex-direction: column;
  }

  .nav-tabs {
    grid-template-columns: 1fr;
  }

  .metric-card strong {
    font-size: 24px;
  }

  .landing-actions,
  .landing-cta {
    flex-direction: column;
  }

  .landing-hero h1 {
    font-size: 46px;
  }

  .landing-hero-content > p:not(.eyebrow) {
    font-size: 20px;
  }
}