:root {
  --saai-ink: #172033;
  --saai-muted: #64748b;
  --saai-border: #d8e0ea;
  --saai-surface: #ffffff;
  --saai-soft: #f5f7fb;
  --saai-primary: #145ea8;
  --saai-primary-strong: #0b457f;
  --saai-accent: #0f766e;
  --saai-warning: #b45309;
  --saai-danger: #b42318;
  --saai-shadow: 0 18px 50px rgba(23, 32, 51, 0.10);
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
}

body.saai-shell {
  min-height: 100vh;
  margin: 0;
  color: var(--saai-ink);
  background:
    linear-gradient(180deg, rgba(245, 247, 251, 0.95), rgba(236, 242, 248, 0.96)),
    #f5f7fb;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
  overflow-x: hidden;
}

body.saai-shell img,
body.saai-shell svg {
  max-width: 100%;
}

.saai-navbar {
  background: #152238;
  border-bottom: 1px solid rgba(255, 255, 255, 0.10);
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.16);
}

.saai-navbar .navbar-brand {
  min-width: 210px;
  max-width: min(62vw, 320px);
  color: #fff;
}

.saai-navbar .navbar-brand:hover,
.saai-navbar .navbar-brand:focus {
  color: #fff;
}

.saai-brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border-radius: 8px;
  color: #fff;
  background: var(--saai-primary);
  font-weight: 800;
}

.saai-navbar .navbar-brand small,
.saai-user small {
  display: block;
  color: #b6c2d2;
  font-size: 0.72rem;
  line-height: 1.1;
}

.saai-navbar .nav-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin: 0 0.15rem;
  border-radius: 8px;
  color: #dbe5f1;
  font-weight: 600;
}

.saai-navbar .nav-link:hover,
.saai-navbar .nav-link:focus,
.saai-navbar .nav-link.active {
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
}

.saai-navbar .navbar-toggler {
  border-color: rgba(255, 255, 255, 0.28);
}

.saai-navbar .navbar-toggler:focus {
  box-shadow: 0 0 0 0.18rem rgba(255, 255, 255, 0.16);
}

.saai-navbar .navbar-toggler-icon {
  filter: invert(1) grayscale(1) brightness(2);
}

.saai-user {
  color: #fff;
  text-align: right;
  line-height: 1.15;
}

.saai-user span {
  display: block;
  font-size: 0.9rem;
  font-weight: 700;
}

.saai-main {
  padding: 28px clamp(16px, 3vw, 36px) 42px;
}

.saai-login-main {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: clamp(16px, 4vw, 42px);
}

.saai-page {
  max-width: 1240px;
  margin: 0 auto;
}

.saai-page-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 22px;
}

.saai-eyebrow {
  margin: 0 0 6px;
  color: var(--saai-primary);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.saai-page-title {
  margin: 0;
  font-size: clamp(1.7rem, 2vw, 2.25rem);
  font-weight: 800;
}

.saai-page-subtitle {
  max-width: 720px;
  margin: 8px 0 0;
  color: var(--saai-muted);
}

.saai-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
}

.saai-card {
  height: 100%;
  min-width: 0;
  border: 1px solid var(--saai-border);
  border-radius: 8px;
  background: var(--saai-surface);
  box-shadow: var(--saai-shadow);
}

.saai-card-header,
.saai-card-body {
  padding: 18px;
}

.saai-card-header {
  border-bottom: 1px solid var(--saai-border);
}

.saai-card-title {
  margin: 0;
  font-size: 1rem;
  font-weight: 800;
}

.saai-card-subtitle {
  margin: 4px 0 0;
  color: var(--saai-muted);
  font-size: 0.9rem;
}

.saai-stat-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 18px;
}

.saai-stat {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 112px;
  padding: 18px;
  border: 1px solid var(--saai-border);
  border-radius: 8px;
  background: var(--saai-surface);
}

.saai-stat strong {
  display: block;
  margin-top: 4px;
  font-size: 1.65rem;
  line-height: 1;
}

.saai-stat span {
  color: var(--saai-muted);
  font-size: 0.9rem;
  font-weight: 700;
}

.saai-stat i {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 8px;
  color: #fff;
  background: var(--saai-primary);
}

.saai-module-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.saai-module-card .saai-card-body {
  display: flex;
  min-height: 230px;
  flex-direction: column;
  align-items: flex-start;
}

.saai-module-card .saai-card-subtitle {
  flex: 1;
}

.saai-module-icon {
  display: grid;
  width: 58px;
  height: 58px;
  place-items: center;
  border-radius: 8px;
  color: #fff;
  background: var(--saai-primary);
  box-shadow: 0 12px 28px rgba(20, 94, 168, 0.20);
}

.saai-module-icon i {
  font-size: 1.45rem;
}

.saai-layout-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(320px, 0.8fr);
  gap: 18px;
}

.saai-metric-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 14px;
}

.saai-form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.saai-detail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 16px;
}

.saai-detail-grid > div {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 4px;
}

.saai-detail-label {
  color: var(--saai-muted);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.saai-field {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.saai-field label {
  color: #334155;
  font-size: 0.85rem;
  font-weight: 800;
}

.saai-control {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--saai-border);
  border-radius: 8px;
  background: #fff;
  color: var(--saai-ink);
  padding: 0.6rem 0.75rem;
}

.saai-control:focus {
  outline: 3px solid rgba(20, 94, 168, 0.18);
  border-color: var(--saai-primary);
}

.saai-table {
  width: 100%;
  min-width: 680px;
  border-collapse: collapse;
}

.saai-table th,
.saai-table td {
  padding: 13px 14px;
  border-bottom: 1px solid var(--saai-border);
  text-align: left;
  vertical-align: middle;
}

.saai-table th {
  color: #475569;
  background: var(--saai-soft);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.saai-badge {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 800;
}

.saai-badge.success {
  color: #065f46;
  background: #dff8ec;
}

.saai-badge.warning {
  color: var(--saai-warning);
  background: #fff3d7;
}

.saai-badge.neutral {
  color: #334155;
  background: #e9eef5;
}

.btn.saai-btn-primary,
.saai-btn-primary {
  border: 0;
  border-radius: 8px;
  background: var(--saai-primary);
  color: #fff;
  font-weight: 800;
}

.btn.saai-btn-primary:hover,
.saai-btn-primary:hover {
  background: var(--saai-primary-strong);
  color: #fff;
}

.saai-btn-ghost {
  border: 1px solid var(--saai-border);
  border-radius: 8px;
  background: #fff;
  color: var(--saai-ink);
  font-weight: 800;
}

.saai-dropzone {
  display: grid;
  min-height: 150px;
  place-items: center;
  border: 1px dashed #91a4bb;
  border-radius: 8px;
  background: #f8fafc;
  text-align: center;
}

.saai-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.saai-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: 8px;
}

.saai-modal .modal-content {
  border: 1px solid var(--saai-border);
  border-radius: 8px;
}

.saai-modal .modal-header,
.saai-modal .modal-footer {
  border-color: var(--saai-border);
}

.saai-modal .modal-title {
  font-weight: 800;
}

.saai-action-group {
  display: inline-flex;
  gap: 6px;
}

.saai-dropzone i {
  margin-bottom: 8px;
  color: var(--saai-primary);
  font-size: 2rem;
}

.saai-dropzone strong {
  display: block;
}

.saai-dropzone span {
  color: var(--saai-muted);
  font-size: 0.9rem;
}

.saai-login-panel {
  width: min(100%, 960px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 420px);
  overflow: hidden;
  border: 1px solid var(--saai-border);
  border-radius: 8px;
  background: var(--saai-surface);
  box-shadow: var(--saai-shadow);
}

.saai-login-brand {
  display: flex;
  min-height: 520px;
  flex-direction: column;
  justify-content: space-between;
  padding: clamp(24px, 4vw, 42px);
  color: #fff;
  background:
    linear-gradient(135deg, rgba(21, 34, 56, 0.94), rgba(20, 94, 168, 0.88)),
    #152238;
}

.saai-login-brand h1 {
  max-width: 540px;
  margin: 22px 0 12px;
  font-size: clamp(2rem, 4vw, 3.25rem);
  font-weight: 800;
  line-height: 1.04;
}

.saai-login-brand p {
  max-width: 520px;
  margin: 0;
  color: #dbe5f1;
  font-size: 1rem;
}

.saai-system-mark {
  display: inline-grid;
  width: 54px;
  height: 54px;
  place-items: center;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.14);
  font-size: 1.35rem;
  font-weight: 800;
}

.saai-login-card {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(22px, 4vw, 38px);
}

.saai-login-card h2 {
  margin: 0;
  font-size: 1.35rem;
  font-weight: 800;
}

.saai-login-card p {
  margin: 8px 0 22px;
  color: var(--saai-muted);
}

.saai-login-form {
  display: grid;
  gap: 15px;
}

.saai-input-icon {
  position: relative;
}

.saai-input-icon i {
  position: absolute;
  top: 50%;
  left: 13px;
  color: var(--saai-muted);
  transform: translateY(-50%);
}

.saai-input-icon .saai-control {
  padding-left: 40px;
}

.saai-login-actions {
  display: grid;
  gap: 10px;
  margin-top: 6px;
}

.saai-login-errors {
  display: grid;
  gap: 8px;
  margin-bottom: 16px;
}

.saai-login-footnote {
  margin-top: 18px;
  color: var(--saai-muted);
  font-size: 0.84rem;
}

@media (max-width: 980px) {
  .saai-stat-grid,
  .saai-layout-grid {
    grid-template-columns: 1fr 1fr;
  }

  .saai-layout-grid {
    grid-template-columns: 1fr;
  }

  .saai-login-panel {
    grid-template-columns: 1fr;
  }

  .saai-login-brand {
    min-height: auto;
  }
}

@media (max-width: 680px) {
  .saai-page-header,
  .saai-actions {
    display: block;
  }

  .saai-actions {
    margin-top: 14px;
  }

  .saai-stat-grid,
  .saai-form-grid {
    grid-template-columns: 1fr;
  }

  .saai-main {
    padding-inline: 14px;
  }

  .saai-navbar .navbar-brand {
    min-width: 0;
  }

  .saai-navbar .navbar-brand strong {
    font-size: 1rem;
  }

  .saai-navbar .navbar-brand small {
    max-width: 180px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .saai-navbar .navbar-collapse {
    padding-top: 12px;
  }

  .saai-navbar .nav-link {
    display: flex;
    width: 100%;
    margin: 2px 0;
    padding: 0.68rem 0.75rem;
  }

  .saai-navbar .d-flex.align-items-center {
    align-items: stretch !important;
    flex-direction: column;
    gap: 10px !important;
    margin-top: 12px;
  }

  .saai-user {
    text-align: left;
  }

  .saai-page-title {
    font-size: 1.55rem;
  }

  .saai-card-header,
  .saai-card-body {
    padding: 15px;
  }

  .saai-action-group {
    flex-wrap: wrap;
  }

  .saai-login-main {
    padding: 12px;
  }

  .saai-login-brand,
  .saai-login-card {
    padding: 20px;
  }

  .saai-login-brand h1 {
    font-size: 1.85rem;
  }
}