:root {
  --vtch-blue: #2f7ec6;
  --vtch-blue-dark: #1f5f99;
  --vtch-bg: #f3f6fb;
  --vtch-surface: #ffffff;
  --vtch-border: #d8e1eb;
  --vtch-text: #21364d;
  --vtch-muted: #64748b;
  --vtch-shadow: 0 14px 34px rgba(31, 63, 104, 0.08);
  --vtch-sidebar-width: 260px;
  --vtch-sidebar-collapsed: 76px;
  --vtch-topbar-height: 56px;
  --vtch-radius: 18px;
  --vtch-input-bg: #ffffff;
  --vtch-overlay: rgba(10, 30, 51, 0.36);
}

html[data-theme="dark"] {
  --vtch-blue: #56a4ea;
  --vtch-blue-dark: #84bfff;
  --vtch-bg: #0f1724;
  --vtch-surface: #172233;
  --vtch-border: #2b3a4f;
  --vtch-text: #e7eef8;
  --vtch-muted: #9db0c7;
  --vtch-shadow: 0 18px 44px rgba(3, 10, 20, 0.36);
  --vtch-input-bg: #0e1623;
  --vtch-overlay: rgba(2, 8, 17, 0.62);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: "Segoe UI", Tahoma, sans-serif;
  color: var(--vtch-text);
  background: var(--vtch-bg);
}

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

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

.portal-login-body {
  min-height: 100vh;
  background:
    linear-gradient(130deg, #0d4aa1 0%, #0d4aa1 6%, #5d72ff 6%, #5d72ff 24%, #e7eff8 24%, #e7eff8 84%, #5d72ff 84%, #5d72ff 94%, #0d4aa1 94%, #0d4aa1 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 28px;
}

html[data-theme="dark"] .portal-login-body {
  background:
    linear-gradient(130deg, #07162f 0%, #07162f 8%, #123767 8%, #123767 24%, #0f1724 24%, #0f1724 84%, #123767 84%, #123767 94%, #07162f 94%, #07162f 100%);
}

.portal-login-theme-toggle {
  position: fixed;
  top: 20px;
  right: 20px;
  min-height: 42px;
  padding: 0 16px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  font-weight: 700;
  backdrop-filter: blur(12px);
  z-index: 10;
}

.portal-login-page {
  width: min(1180px, 100%);
  display: grid;
  grid-template-columns: 1.2fr minmax(360px, 420px);
  gap: 32px;
  align-items: center;
}

.portal-login-hero {
  min-height: 520px;
  border-radius: 30px;
  background: rgba(231, 239, 248, 0.9);
  padding: 44px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  box-shadow: var(--vtch-shadow);
}

html[data-theme="dark"] .portal-login-hero {
  background: rgba(23, 34, 51, 0.94);
}

.portal-login-logo-hero {
  width: min(520px, 100%);
  margin-bottom: 24px;
}

.portal-login-hero-copy h1 {
  margin: 0 0 16px;
  font-size: clamp(2rem, 3vw, 3.2rem);
  line-height: 1.1;
}

.portal-login-hero-copy p {
  margin: 0;
  max-width: 560px;
  color: var(--vtch-muted);
  font-size: 1.05rem;
  line-height: 1.7;
}

.portal-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  color: var(--vtch-blue);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.portal-login-card {
  background: rgba(255, 255, 255, 0.98);
  border-radius: 28px;
  padding: 34px 32px;
  box-shadow: 0 24px 60px rgba(10, 40, 84, 0.18);
}

html[data-theme="dark"] .portal-login-card {
  background: rgba(23, 34, 51, 0.98);
  box-shadow: 0 24px 60px rgba(2, 8, 17, 0.45);
}

.portal-login-logo {
  width: min(280px, 100%);
  display: block;
  margin: 0 auto 18px;
}

.portal-login-card h1 {
  margin: 0 0 8px;
  font-size: 2rem;
}

.portal-login-card p {
  margin: 0;
  color: var(--vtch-muted);
}

.portal-login-form,
.portal-form-grid {
  display: grid;
  gap: 16px;
}

.portal-login-form {
  margin-top: 24px;
}

.portal-login-form label,
.portal-form-grid label {
  display: grid;
  gap: 8px;
  font-weight: 700;
  color: var(--vtch-text);
}

.portal-login-form input,
.portal-form-grid input,
.portal-form-grid textarea,
.portal-form-grid select {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--vtch-border);
  border-radius: 14px;
  background: var(--vtch-input-bg);
  padding: 12px 14px;
  color: var(--vtch-text);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.portal-login-form input:focus,
.portal-form-grid input:focus,
.portal-form-grid textarea:focus,
.portal-form-grid select:focus {
  outline: none;
  border-color: var(--vtch-blue);
  box-shadow: 0 0 0 3px rgba(47, 126, 198, 0.14);
}

.portal-login-form button,
.portal-inline-actions button,
.card-action,
.portal-userbox button,
.nav-link,
.portal-topbar-toggle,
.portal-sidebar-collapse {
  border: 0;
  border-radius: 12px;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background-color 0.18s ease;
}

.portal-login-form button,
.portal-inline-actions button,
.card-action,
.portal-userbox button {
  background: var(--vtch-blue);
  color: #fff;
  padding: 12px 18px;
  font-weight: 700;
  box-shadow: 0 6px 16px rgba(47, 126, 198, 0.26);
}

.portal-login-form button:hover,
.portal-inline-actions button:hover,
.card-action:hover,
.portal-userbox button:hover {
  transform: translateY(-1px);
  background: var(--vtch-blue-dark);
}

.portal-feedback {
  min-height: 24px;
  margin-top: 12px;
  color: #b42318;
}

.portal-app-body {
  min-height: 100vh;
  background: var(--vtch-bg);
}

.portal-sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  width: var(--vtch-sidebar-width);
  background: var(--vtch-surface);
  border-right: 1px solid var(--vtch-border);
  display: flex;
  flex-direction: column;
  z-index: 30;
  transition: width 0.24s ease, transform 0.24s ease;
}

.portal-sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 86px;
  padding: 18px 18px 14px;
  border-bottom: 1px solid var(--vtch-border);
}

.portal-sidebar-header img {
  width: 148px;
  max-width: 100%;
  transition: width 0.24s ease, opacity 0.24s ease;
}

.portal-sidebar-collapse,
.portal-topbar-toggle {
  width: 38px;
  height: 38px;
  background: transparent;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
}

.portal-sidebar-collapse span,
.portal-topbar-toggle span {
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: var(--vtch-blue);
}

.portal-sidebar-scroll {
  flex: 1;
  overflow-y: auto;
  padding: 16px 14px 18px;
  scrollbar-width: thin;
  scrollbar-color: var(--vtch-blue) #eef3f7;
}

.portal-sidebar-scroll::-webkit-scrollbar {
  width: 8px;
}

.portal-sidebar-scroll::-webkit-scrollbar-thumb {
  background: var(--vtch-blue);
  border-radius: 999px;
}

.portal-nav-section + .portal-nav-section {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--vtch-border);
}

.portal-nav-section-title {
  display: block;
  margin: 0 10px 12px;
  color: var(--vtch-text);
  font-size: 0.86rem;
  font-weight: 800;
}

.portal-menubar {
  display: grid;
  gap: 8px;
}

.nav-link {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  width: 100%;
  min-height: 44px;
  background: transparent;
  padding: 0 14px;
  color: var(--vtch-text);
  font-weight: 600;
  text-align: left;
}

.nav-link:hover,
.nav-link.active {
  background: rgba(47, 126, 198, 0.1);
  color: var(--vtch-blue);
}

.nav-group {
  position: relative;
}

.nav-group-trigger::after {
  content: "▾";
  margin-left: auto;
  color: var(--vtch-muted);
  font-size: 0.8rem;
}

.nav-dropdown {
  display: none;
  margin-top: 6px;
  margin-left: 10px;
  padding-left: 10px;
  border-left: 2px solid #e8eef5;
}

.nav-group:hover .nav-dropdown,
.nav-group.open .nav-dropdown,
.nav-group:focus-within .nav-dropdown {
  display: grid;
  gap: 6px;
}

.portal-sidebar-footer {
  padding: 14px 18px;
  border-top: 1px solid var(--vtch-border);
  color: var(--vtch-muted);
  font-size: 0.82rem;
  text-align: center;
}

.portal-main-shell {
  min-height: 100vh;
  margin-left: var(--vtch-sidebar-width);
  transition: margin-left 0.24s ease;
}

.portal-topbar {
  position: sticky;
  top: 0;
  z-index: 25;
  height: var(--vtch-topbar-height);
  background: var(--vtch-blue);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 0 18px;
  box-shadow: 0 2px 12px rgba(25, 67, 110, 0.14);
}

.portal-theme-toggle {
  background: rgba(255, 255, 255, 0.12) !important;
  color: #fff !important;
  border: 1px solid rgba(255, 255, 255, 0.16) !important;
  box-shadow: none !important;
}

.portal-theme-toggle:hover,
.portal-login-theme-toggle:hover {
  transform: translateY(-1px);
}

.portal-topbar-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.portal-topbar-copy {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.portal-topbar-copy strong {
  font-size: 0.96rem;
}

.portal-topbar-copy span {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.82);
}

.portal-topbar-toggle {
  display: none;
}

.portal-content-shell {
  padding: 22px;
}

.portal-content {
  display: grid;
  gap: 20px;
}

.portal-page-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.portal-page-head h1 {
  margin: 0 0 8px;
  font-size: clamp(2rem, 2.6vw, 2.8rem);
}

.portal-page-head p {
  margin: 0;
  color: var(--vtch-muted);
}

.portal-page-head.compact {
  margin-bottom: 0;
}

.portal-hero,
.portal-card,
.iframe-card,
.portal-form-card {
  background: var(--vtch-surface);
  border: 1px solid var(--vtch-border);
  border-radius: var(--vtch-radius);
  box-shadow: var(--vtch-shadow);
}

html[data-theme="dark"] .portal-inline-actions a {
  background: rgba(86, 164, 234, 0.16);
  color: var(--vtch-blue-dark);
}

.portal-grid {
  display: grid;
  gap: 18px;
}

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

.portal-grid.four {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.portal-card,
.portal-form-card {
  padding: 22px;
}

.portal-card h3 {
  margin: 0 0 10px;
  font-size: 1.1rem;
}

.portal-card p {
  margin: 0;
  color: var(--vtch-muted);
  line-height: 1.6;
}

.portal-inline-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.portal-inline-actions.compact {
  margin-top: 12px;
}

.portal-inline-actions a {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 0 16px;
  border-radius: 12px;
  background: rgba(47, 126, 198, 0.1);
  color: var(--vtch-blue);
  font-weight: 700;
}

.iframe-card {
  min-height: calc(100vh - 190px);
  overflow: hidden;
}

.iframe-card.tall {
  min-height: calc(100vh - 150px);
}

.iframe-card iframe {
  width: 100%;
  height: 100%;
  min-height: inherit;
  border: 0;
  background: var(--vtch-input-bg);
}

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

.portal-api-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding-left: 18px;
}

.portal-api-list code {
  color: var(--vtch-blue-dark);
  font-weight: 700;
}

.hidden {
  display: none !important;
}

.portal-app-body.sidebar-collapsed .portal-sidebar {
  width: var(--vtch-sidebar-collapsed);
}

.portal-app-body.sidebar-collapsed .portal-sidebar-header img,
.portal-app-body.sidebar-collapsed .portal-nav-section-title,
.portal-app-body.sidebar-collapsed .nav-link,
.portal-app-body.sidebar-collapsed .portal-sidebar-footer {
  opacity: 0;
  pointer-events: none;
}

.portal-app-body.sidebar-collapsed .portal-main-shell {
  margin-left: var(--vtch-sidebar-collapsed);
}

.portal-app-body.sidebar-collapsed .portal-topbar-toggle {
  display: inline-flex;
}

.portal-app-body.sidebar-collapsed .portal-sidebar-header {
  justify-content: center;
}

.portal-app-body.sidebar-collapsed .portal-sidebar-collapse {
  position: absolute;
  top: 24px;
  left: 18px;
}

.portal-app-body.sidebar-collapsed .portal-menubar {
  justify-items: center;
}

@media (max-width: 1180px) {
  .portal-grid.three,
  .portal-grid.four,
  .portal-form-grid.two,
  .portal-login-page {
    grid-template-columns: 1fr;
  }

  .portal-login-hero {
    min-height: auto;
  }
}

@media (max-width: 920px) {
  .portal-sidebar {
    transform: translateX(-100%);
    width: min(300px, 88vw);
    box-shadow: 0 20px 40px rgba(18, 41, 69, 0.24);
  }

  .portal-app-body::before {
    content: "";
    position: fixed;
    inset: 0;
    background: var(--vtch-overlay);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.22s ease;
    z-index: 20;
  }

  .portal-main-shell {
    margin-left: 0;
  }

  .portal-topbar-toggle {
    display: inline-flex;
  }

  .portal-app-body.sidebar-open .portal-sidebar {
    transform: translateX(0);
  }

  .portal-app-body.sidebar-open::before {
    opacity: 1;
    pointer-events: auto;
  }
}

@media (max-width: 720px) {
  .portal-content-shell {
    padding: 16px;
  }

  .portal-topbar {
    height: auto;
    min-height: var(--vtch-topbar-height);
    padding: 10px 14px;
    align-items: flex-start;
  }

  .portal-topbar-copy span {
    display: none;
  }

  .portal-login-card,
  .portal-login-hero,
  .portal-card,
  .portal-form-card {
    padding: 18px;
  }

  .portal-inline-actions,
  .portal-userbox {
    width: 100%;
  }

  .portal-userbox {
    justify-content: flex-end;
  }
}