/* Google Minimalist Monochrome Design System (Light & Dark) */

:root {
  --bg-light: #ffffff;
  --bg-dark: #111214;

  --surface-light: #f8f9fa;
  --surface-dark: #18191c;

  --elevated-light: #ffffff;
  --elevated-dark: #1f2024;

  --border-light: #e0e2e6;
  --border-dark: #2c2e33;

  --border-strong-light: #9aa0a6;
  --border-strong-dark: #5f6368;

  --text-primary-light: #1f1f1f;
  --text-primary-dark: #e8eaed;

  --text-secondary-light: #5f6368;
  --text-secondary-dark: #9aa0a6;

  --accent-bg-light: #1f1f1f;
  --accent-bg-dark: #e8eaed;

  --accent-fg-light: #ffffff;
  --accent-fg-dark: #111214;

  --hover-light: rgba(31, 31, 31, 0.06);
  --hover-dark: rgba(232, 234, 237, 0.08);

  --canvas-bg: #0c0d0f;

  /* Default tokens + prefers-color-scheme fallback for pre-light-dark() browsers */
  --bg: var(--bg-light);
  --surface: var(--surface-light);
  --elevated: var(--elevated-light);
  --border: var(--border-light);
  --border-strong: var(--border-strong-light);
  --text-primary: var(--text-primary-light);
  --text-secondary: var(--text-secondary-light);
  --accent-bg: var(--accent-bg-light);
  --accent-fg: var(--accent-fg-light);
  --hover-bg: var(--hover-light);

  @media (prefers-color-scheme: dark) {
    --bg: var(--bg-dark);
    --surface: var(--surface-dark);
    --elevated: var(--elevated-dark);
    --border: var(--border-dark);
    --border-strong: var(--border-strong-dark);
    --text-primary: var(--text-primary-dark);
    --text-secondary: var(--text-secondary-dark);
    --accent-bg: var(--accent-bg-dark);
    --accent-fg: var(--accent-fg-dark);
    --hover-bg: var(--hover-dark);
  }

  @supports (color: light-dark(white, black)) {
    --bg: light-dark(var(--bg-light), var(--bg-dark));
    --surface: light-dark(var(--surface-light), var(--surface-dark));
    --elevated: light-dark(var(--elevated-light), var(--elevated-dark));
    --border: light-dark(var(--border-light), var(--border-dark));
    --border-strong: light-dark(var(--border-strong-light), var(--border-strong-dark));
    --text-primary: light-dark(var(--text-primary-light), var(--text-primary-dark));
    --text-secondary: light-dark(var(--text-secondary-light), var(--text-secondary-dark));
    --accent-bg: light-dark(var(--accent-bg-light), var(--accent-bg-dark));
    --accent-fg: light-dark(var(--accent-fg-light), var(--accent-fg-dark));
    --hover-bg: light-dark(var(--hover-light), var(--hover-dark));
  }

  color-scheme: light dark;
  accent-color: var(--accent-bg);

  --font-sans: "Google Sans", "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", "Roboto Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
}

:root.theme-light {
  color-scheme: light;
  --bg: var(--bg-light);
  --surface: var(--surface-light);
  --elevated: var(--elevated-light);
  --border: var(--border-light);
  --border-strong: var(--border-strong-light);
  --text-primary: var(--text-primary-light);
  --text-secondary: var(--text-secondary-light);
  --accent-bg: var(--accent-bg-light);
  --accent-fg: var(--accent-fg-light);
  --hover-bg: var(--hover-light);
}

:root.theme-dark {
  color-scheme: dark;
  --bg: var(--bg-dark);
  --surface: var(--surface-dark);
  --elevated: var(--elevated-dark);
  --border: var(--border-dark);
  --border-strong: var(--border-strong-dark);
  --text-primary: var(--text-primary-dark);
  --text-secondary: var(--text-secondary-dark);
  --accent-bg: var(--accent-bg-dark);
  --accent-fg: var(--accent-fg-dark);
  --hover-bg: var(--hover-dark);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
  background-color: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 0.1em 0.35em;
  border-radius: 4px;
}

.visually-hidden {
  position: absolute;
  clip-path: inset(50%);
  overflow: hidden;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  white-space: nowrap;
}

:focus-visible {
  outline: 2px solid var(--text-primary);
  outline-offset: 2px;
}

/* Centered Auth & Provisioning Cards */
.centered-shell {
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 1.5rem;
  background: var(--surface);
}

.auth-card {
  width: 100%;
  max-width: 420px;
  background: var(--elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
}

.card-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-block-end: 1.25rem;
}

.brand-row {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
}

.brand-glyph {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
}

.brand-label {
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.card-title {
  margin: 1.25rem 0 0.5rem;
  font-size: 1.375rem;
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.25;
}

.card-topbar + .card-title {
  margin-block-start: 0.25rem;
}

.card-subtitle {
  margin: 0 0 1.5rem;
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

.divider-top {
  margin-block-start: 1.5rem;
  padding-block-start: 1.25rem;
  border-block-start: 1px solid var(--border);
}

/* Forms (Gestalt Proximity & 48px Tap Targets) */
.stacked-form {
  display: flex;
  flex-direction: column;
}

.stacked-actions {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}

.field-group {
  display: flex;
  flex-direction: column;
  margin-block-end: 1.25rem;
}

.label-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-block-end: 0.375rem;
}

.field-group > label {
  font-size: 0.875rem;
  font-weight: 500;
  margin-block-end: 0.375rem;
  color: var(--text-primary);
}

.label-row > label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
}

input[type="text"],
input[type="email"],
input[type="password"],
textarea {
  width: 100%;
  font-family: inherit;
  font-size: 1rem;
  min-height: 48px;
  padding: 0.6875rem 0.875rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
  background: var(--bg);
  color: var(--text-primary);
  transition: border-color 0.15s ease;
}

textarea {
  min-height: 120px;
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  resize: vertical;
}

input[readonly] {
  background: var(--surface);
  border-color: var(--border);
  color: var(--text-secondary);
  font-family: var(--font-mono);
}

input:invalid:user-invalid {
  border-width: 2px;
}

@media (pointer: coarse) {
  input[type="text"],
  input[type="email"],
  input[type="password"] {
    min-height: 52px;
  }
}

.field-hint {
  margin-block-start: 0.375rem;
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

.btn-inline-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  background: transparent;
  border: 0;
  padding: 0.25rem 0.4rem;
  margin: -0.25rem -0.4rem;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-family: inherit;
  font-size: 0.8125rem;
  cursor: pointer;
}

.btn-inline-toggle:hover {
  color: var(--text-primary);
  background: var(--hover-bg);
}

/* Monochrome Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 48px;
  padding: 0 1.125rem;
  border-radius: 999px;
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background-color 0.15s ease, opacity 0.15s ease;
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn-block {
  width: 100%;
}

.btn-compact {
  min-height: 34px;
  padding: 0 0.75rem;
  font-size: 0.8125rem;
}

.btn-primary {
  background: var(--accent-bg);
  color: var(--accent-fg);
}

.btn-primary:hover:not(:disabled) {
  opacity: 0.88;
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border-strong);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--hover-bg);
}

.btn-ghost {
  background: transparent;
  color: var(--text-primary);
}

.btn-ghost:hover:not(:disabled) {
  background: var(--hover-bg);
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 0;
  background: transparent;
  color: var(--text-primary);
  cursor: pointer;
}

.icon-btn:hover {
  background: var(--hover-bg);
}

.status-banner {
  margin-block-end: 1rem;
  padding: 0.75rem 0.875rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--text-primary);
  background: var(--surface);
  color: var(--text-primary);
  font-size: 0.875rem;
}

/* Workspace Shell */
.app-layout {
  display: flex;
  flex-direction: column;
  height: 100dvh;
  overflow: clip;
}

.topbar {
  height: 52px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-inline: 0.75rem 1rem;
  border-block-end: 1px solid var(--border);
  background: var(--bg);
  gap: 0.75rem;
}

.topbar-left,
.topbar-right {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.topbar-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9375rem;
  letter-spacing: -0.01em;
  padding-inline: 0.25rem;
}

.mono-pill {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

.user-chip {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  padding-inline: 0.5rem;
  max-width: 220px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.workspace-body {
  flex: 1;
  min-inline-size: 0;
  min-block-size: 0;
  display: flex;
}

.nav-rail {
  width: 248px;
  flex-shrink: 0;
  border-inline-end: 1px solid var(--border);
  background: var(--surface);
  display: flex;
  flex-direction: column;
  padding: 0.875rem 0.75rem;
  gap: 1.25rem;
}

.nav-section {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.nav-heading {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
  padding-inline: 0.625rem;
}

.nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-item {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.55rem 0.625rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
}

.nav-item.is-active {
  background: var(--elevated);
  border-color: var(--border);
}

.nav-empty-note {
  margin: 0;
  padding: 0.5rem 0.625rem;
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.45;
}

.nav-footer {
  margin-block-start: auto;
  padding: 0.625rem;
  border-block-start: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.meta-kv {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  font-size: 0.75rem;
}

.meta-k {
  color: var(--text-secondary);
}

/* Main RDP Stage */
.main-stage {
  flex: 1;
  min-inline-size: 0;
  min-block-size: 0;
  display: flex;
  flex-direction: column;
  background: var(--bg);
}

.session-bar {
  height: 42px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-inline: 1rem;
  border-block-end: 1px solid var(--border);
  background: var(--surface);
  gap: 0.75rem;
}

.session-bar-left,
.session-bar-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.stage-heading {
  margin: 0;
  font-size: 0.875rem;
  font-weight: 500;
}

.session-status-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
}

/* Monochrome geometric state indicator (shape + fill, not color) */
.state-indicator {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  border: 1.5px solid var(--text-secondary);
  display: inline-block;
}

.state-indicator[data-state="connected"] {
  background: var(--text-primary);
  border-color: var(--text-primary);
}

.state-indicator[data-state="connecting"] {
  border-style: dashed;
  border-color: var(--text-primary);
  animation: spin 1.4s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.rdp-viewport {
  position: relative;
  flex: 1 1 0;
  min-inline-size: 0;
  min-block-size: 0;
  contain: size;
  display: grid;
  place-items: center;
  background: var(--canvas-bg);
  overflow: clip;
}

.rdp-canvas {
  min-inline-size: 0;
  min-block-size: 0;
  max-inline-size: 100%;
  max-block-size: 100%;
  inline-size: auto;
  block-size: auto;
  display: block;
  outline: none;
}

.rdp-overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 1.5rem;
  background: var(--surface);
}

.connect-panel {
  width: 100%;
  max-width: 380px;
  background: var(--elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
}

.connect-header {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  margin-block-end: 0.5rem;
}

.connect-header h2 {
  margin: 0;
  font-size: 1.125rem;
  font-weight: 500;
}

.connect-desc {
  margin: 0 0 1.25rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* Native Modal Dialogs */
.modal-dialog {
  padding: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--elevated);
  color: var(--text-primary);
  width: min(92vw, 420px);
}

.modal-dialog::backdrop {
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(2px);
}

.modal-inner {
  padding: 1.5rem;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-block-end: 0.5rem;
}

.modal-header h2 {
  margin: 0;
  font-size: 1.125rem;
  font-weight: 500;
}

.modal-desc {
  margin: 0 0 1.25rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  margin-block-start: 0.5rem;
}

@media (max-width: 760px) {
  .user-chip {
    display: none;
  }
  .nav-rail {
    position: fixed;
    inset-block: 52px 0;
    inset-inline-start: 0;
    z-index: 20;
  }
}