:root {
  /* Unified Dark Design System (Linear / Apple / SaaS 2026) */
  --bg-primary: #111318;
  --bg-secondary: #181C25;
  --surface: #202635;
  --surface-elevated: #252C3B;
  
  --text-primary: #F3F4F8;
  --text-secondary: #969EAF;
  --text-tertiary: #677084;

  --accent-primary: #8B7CFF;
  --accent-primary-hover: #9D90FF;
  --accent-primary-soft: rgba(139, 124, 255, 0.12);
  --accent-primary-border: rgba(139, 124, 255, 0.32);

  --accent-secondary: #E83E9B;
  --accent-secondary-soft: rgba(232, 62, 155, 0.12);

  --state-success: #35C98A;
  --state-success-soft: rgba(53, 201, 138, 0.1);
  --state-success-border: rgba(53, 201, 138, 0.28);

  --state-error: #F06475;
  --state-error-soft: rgba(240, 100, 117, 0.1);
  --state-error-border: rgba(240, 100, 117, 0.32);

  /* Hairline Borders & Dividers */
  --border-subtle: rgba(255, 255, 255, 0.07);
  --border-strong: rgba(255, 255, 255, 0.12);
  --divider: rgba(255, 255, 255, 0.06);

  /* Radii & Spacing */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: clip;
  width: 100%;
}

body {
  min-height: 100vh;
  width: 100%;
  max-width: 100vw;
  background-color: var(--bg-primary);
  background-image: radial-gradient(ellipse 80% 45% at 50% -10%, rgba(139, 124, 255, 0.08), transparent);
  color: var(--text-primary);
  font-size: 0.9375rem;
  overflow-x: clip;
}

/* Icons */
.icon {
  display: inline-block;
  vertical-align: middle;
  flex-shrink: 0;
}
.icon-xxs { width: 13px; height: 13px; }
.icon-xs  { width: 15px; height: 15px; }
.icon-sm  { width: 18px; height: 18px; }
.icon-md  { width: 20px; height: 20px; }
.icon-lg  { width: 24px; height: 24px; }

.text-accent {
  color: var(--accent-primary);
}

.container {
  width: 100%;
  max-width: 1220px;
  margin-inline: auto;
  padding-inline: 1.5rem;
}

/* ==========================================
   Top Navigation Bar
   ========================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(17, 19, 24, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  height: 56px;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 1rem;
  min-width: 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
  flex-shrink: 0;
}

.brand-logo {
  border-radius: 50%;
  flex-shrink: 0;
}

.brand-accent {
  color: var(--accent-secondary);
}

.header-divider {
  width: 1px;
  height: 16px;
  background: var(--border-strong);
  flex-shrink: 0;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.84rem;
  font-weight: 500;
  white-space: nowrap;
  transition: color 0.15s ease;
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--text-primary);
}

.header-right {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.progress-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-sm);
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-secondary);
  white-space: nowrap;
  transition: border-color 0.2s ease, color 0.2s ease, background-color 0.2s ease;
}

.progress-pill.is-complete {
  background: var(--state-success-soft);
  border-color: var(--state-success-border);
  color: var(--state-success);
}

.progress-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-primary);
}

.progress-pill.is-complete .progress-dot {
  background: var(--state-success);
}

/* ==========================================
   Main Workspace Layout
   ========================================== */
.workspace-section {
  padding-block: 2rem 3.5rem;
}

.workspace-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 2.25rem;
  align-items: start;
}

/* ==========================================
   Left Column: Step-by-Step Setup Assistant
   ========================================== */
.assistant-column {
  position: sticky;
  top: 76px;
  display: flex;
  flex-direction: column;
  gap: 1.15rem;
  min-width: 0;
  max-width: 100%;
}

.assistant-intro {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.main-title {
  font-size: clamp(1.5rem, 2.2vw, 1.95rem);
  font-weight: 600;
  line-height: 1.22;
  letter-spacing: -0.025em;
  color: var(--text-primary);
}

.subtitle {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.55;
  max-width: 60ch;
}

/* Completion Alert Banner */
.completion-alert {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  padding: 0.95rem 1.1rem;
  border-radius: var(--radius-lg);
  background: var(--state-success-soft);
  border: 1px solid var(--state-success-border);
  animation: fadeIn 0.22s ease-out;
}

.completion-alert[hidden] {
  display: none !important;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.completion-icon-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  background: rgba(53, 201, 138, 0.18);
  color: var(--state-success);
  flex-shrink: 0;
}

.completion-title {
  font-size: 0.925rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.15rem;
}

.completion-desc {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

/* Unified Assistant Container */
.assistant-panel {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.assistant-panel-header {
  padding: 0.95rem 1.15rem 0.85rem;
  border-bottom: 1px solid var(--divider);
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.assistant-header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.assistant-title-group {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.assistant-title-group h2 {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

.assistant-step-counter {
  font-size: 0.78rem;
  color: var(--text-tertiary);
}

.reset-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.6rem;
  border-radius: var(--radius-sm);
  background: var(--surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font: inherit;
  font-size: 0.76rem;
  font-weight: 500;
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.reset-btn:hover {
  background: var(--surface-elevated);
  color: var(--text-primary);
  border-color: var(--border-strong);
}

.reset-btn:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
}

/* Unobtrusive Thin Progress Bar */
.assistant-progress-track {
  width: 100%;
  height: 3px;
  border-radius: 999px;
  background: var(--surface);
  overflow: hidden;
}

.assistant-progress-fill {
  height: 100%;
  background: var(--accent-primary);
  border-radius: 999px;
  transition: width 0.25s ease, background-color 0.25s ease;
}

.assistant-progress-fill.is-complete {
  background: var(--state-success);
}

/* Divided Task List (No Card-Per-Item Noise) */
.task-list {
  list-style: none;
  display: flex;
  flex-direction: column;
}

.task-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.7rem 1.15rem;
  border-bottom: 1px solid var(--divider);
  cursor: pointer;
  transition: background-color 0.15s ease;
}

.task-item:hover {
  background: rgba(255, 255, 255, 0.025);
}

.task-item.is-done {
  background: rgba(53, 201, 138, 0.035);
}

.task-check {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  margin-top: 0.1rem;
  border-radius: 5px;
  border: 1.5px solid var(--border-strong);
  background: var(--bg-primary);
  color: transparent;
  flex-shrink: 0;
  transition: all 0.18s ease;
}

.task-item:hover .task-check {
  border-color: var(--accent-primary);
}

.task-item.is-done .task-check {
  background: var(--state-success);
  border-color: var(--state-success);
  color: var(--bg-primary);
}

.task-body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.12rem;
}

.task-text {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.task-text strong {
  color: var(--text-primary);
  font-weight: 500;
}

.task-item.is-done .task-text,
.task-item.is-done .task-text strong {
  color: var(--text-secondary);
}

.task-caption {
  font-size: 0.76rem;
  color: var(--text-tertiary);
  line-height: 1.35;
}

.task-badge {
  font-size: 0.68rem;
  font-family: var(--font-mono);
  font-weight: 500;
  padding: 0.12rem 0.42rem;
  border-radius: 4px;
  background: var(--surface);
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  flex-shrink: 0;
  margin-top: 0.08rem;
}

.task-item.is-done .task-badge {
  background: var(--state-success-soft);
  border-color: var(--state-success-border);
  color: var(--state-success);
}

/* Integrated Proxy Section at Bottom of Assistant Panel */
.proxy-section {
  padding: 0.95rem 1.15rem 1.1rem;
  background: rgba(17, 19, 24, 0.45);
}

.proxy-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.65rem;
}

.proxy-header-label {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-primary);
}

.proxy-protocol-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-tertiary);
}

.proxy-list {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: var(--bg-primary);
  overflow: hidden;
}

.proxy-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.65rem;
  padding: 0.5rem 0.7rem;
}

.proxy-item + .proxy-item {
  border-top: 1px solid var(--divider);
}

.proxy-meta {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  min-width: 0;
  flex: 1;
}

.proxy-node-tag {
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--text-tertiary);
  padding: 0.1rem 0.38rem;
  border-radius: 4px;
  background: var(--bg-secondary);
  white-space: nowrap;
  flex-shrink: 0;
}

.proxy-code {
  font-family: var(--font-mono);
  font-size: 0.77rem;
  color: var(--text-primary);
  word-break: break-all;
  user-select: all;
}

.copy-proxy-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.32rem 0.65rem;
  border-radius: var(--radius-sm);
  background: var(--surface);
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
  font: inherit;
  font-size: 0.75rem;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  transition: background-color 0.15s ease, border-color 0.15s ease;
}

.copy-proxy-btn:hover {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
  color: #FFFFFF;
}

.copy-proxy-btn:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
}

/* ==========================================
   Right Column: Antigravity Unlocker Panel
   ========================================== */
.unlocker-column {
  min-width: 0;
  max-width: 100%;
}

.unlocker-window {
  background: var(--bg-secondary);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 20px 44px rgba(0, 0, 0, 0.42);
}

.unlocker-titlebar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.65rem 1rem;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-subtle);
}

.unlocker-titlebar-left {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.unlocker-mini-logo {
  border-radius: 50%;
}

.unlocker-app-name {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-primary);
}

.unlocker-version {
  font-size: 0.72rem;
  font-family: var(--font-mono);
  color: var(--text-secondary);
  padding: 0.12rem 0.45rem;
  border-radius: 4px;
  background: var(--surface);
  border: 1px solid var(--border-subtle);
}

.unlocker-body {
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* Top Status Box inside Unlocker */
.unlocker-status-box {
  padding: 0.85rem 1rem;
  border-radius: var(--radius-md);
  background: var(--surface);
  border: 1px solid var(--border-subtle);
  transition: background-color 0.25s ease, border-color 0.25s ease;
}

.unlocker-status-box.is-working {
  background: var(--state-success-soft);
  border-color: var(--state-success-border);
}

.status-headline {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin-bottom: 0.2rem;
}

.status-indicator {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--accent-primary);
  flex-shrink: 0;
  transition: background-color 0.25s ease, box-shadow 0.25s ease;
}

.unlocker-status-box.is-working .status-indicator {
  background: var(--state-success);
  box-shadow: 0 0 8px rgba(53, 201, 138, 0.5);
}

.status-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

.status-subtext {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* Logical Groups inside Unlocker */
.unlocker-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.group-header-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-tertiary);
  padding-inline: 0.15rem;
}

.unlocker-surface {
  background: var(--surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.25rem 0.95rem;
  display: flex;
  flex-direction: column;
}

.setting-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.65rem 0;
  min-width: 0;
  border-radius: var(--radius-sm);
  transition: background-color 0.2s ease, box-shadow 0.2s ease;
}

.setting-block {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  padding: 0.65rem 0;
  min-width: 0;
  border-radius: var(--radius-sm);
  transition: background-color 0.2s ease, box-shadow 0.2s ease;
}

.setting-block > .setting-row {
  padding: 0;
}

.setting-row.highlight-pulse,
.setting-block.highlight-pulse {
  box-shadow: 0 0 0 2px var(--accent-primary);
  background: var(--accent-primary-soft);
  padding-inline: 0.45rem;
  margin-inline: -0.45rem;
}

.setting-label-group {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  min-width: 0;
  flex: 1;
}

.setting-label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
  cursor: pointer;
  overflow-wrap: break-word;
}

.setting-sublabel {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
}

.setting-divider {
  height: 1px;
  background: var(--divider);
  width: 100%;
}

/* Info Icon Tooltip */
.info-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border: none;
  background: transparent;
  color: var(--text-tertiary);
  cursor: pointer;
  border-radius: 50%;
  flex-shrink: 0;
  transition: color 0.15s ease;
}

.info-btn:hover,
.info-btn:focus-visible {
  color: var(--accent-primary);
  outline: none;
}

.icon-info {
  width: 14px;
  height: 14px;
}

.info-btn::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  width: max-content;
  max-width: 220px;
  padding: 0.4rem 0.6rem;
  border-radius: var(--radius-sm);
  background: var(--bg-primary);
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
  font-size: 0.72rem;
  font-weight: 400;
  line-height: 1.35;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s ease, transform 0.15s ease;
  z-index: 30;
}

.info-btn:hover::after,
.info-btn:focus-visible::after {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* Accessible Switch Control */
input[type="checkbox"][switch].unlocker-switch {
  accent-color: var(--accent-primary);
  margin: 0;
  cursor: pointer;
  flex-shrink: 0;
}

input[type="checkbox"].unlocker-switch.switch-fallback {
  appearance: none;
  -webkit-appearance: none;
  width: 38px;
  height: 21px;
  border-radius: 999px;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-strong);
  position: relative;
  transition: background-color 0.18s ease, border-color 0.18s ease;
}

input[type="checkbox"].unlocker-switch.switch-fallback::before {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background-color: var(--text-secondary);
  transition: transform 0.18s cubic-bezier(0.2, 0.85, 0.32, 1.2), background-color 0.18s ease;
}

input[type="checkbox"].unlocker-switch.switch-fallback:checked {
  background-color: var(--accent-primary);
  border-color: var(--accent-primary);
}

input[type="checkbox"].unlocker-switch.switch-fallback:checked::before {
  transform: translateX(17px);
  background-color: #FFFFFF;
}

input[type="checkbox"].unlocker-switch.switch-fallback.sub-dns-switch:checked {
  background-color: rgba(139, 124, 255, 0.65);
  border-color: rgba(139, 124, 255, 0.75);
}

input[type="checkbox"][switch].unlocker-switch:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 3px;
}

/* Unlocker Buttons & Inputs */
.group-proxy-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.unlocker-btn {
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  background: var(--surface-elevated);
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
  font: inherit;
  font-size: 0.78rem;
  font-weight: 500;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease;
}

.unlocker-btn:hover {
  background: #2D3546;
  border-color: rgba(255, 255, 255, 0.2);
}

.unlocker-btn.primary-action-btn {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
  color: #FFFFFF;
}

.unlocker-btn.primary-action-btn:hover {
  background: var(--accent-primary-hover);
  border-color: var(--accent-primary-hover);
}

.unlocker-btn:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
}

.unlocker-input {
  width: 100%;
  min-width: 0;
  flex: 1;
  font: inherit;
  font-family: var(--font-mono);
  font-size: max(0.8rem, 14px);
  padding: 0.42rem 0.65rem;
  min-height: 36px;
  border-radius: var(--radius-sm);
  background: var(--bg-primary);
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.unlocker-input::placeholder {
  color: var(--text-tertiary);
}

.unlocker-input:focus-visible {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 2px var(--accent-primary-soft);
}

.unlocker-input[aria-invalid="true"] {
  border-color: var(--state-error);
  box-shadow: 0 0 0 2px var(--state-error-soft);
}

.token-input {
  color: var(--text-secondary);
  font-size: 0.76rem;
}

/* Detected Installations List */
.installations-section {
  padding: 0.65rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.installations-heading {
  font-size: 0.76rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.install-list {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.install-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.78rem;
  min-width: 0;
  max-width: 100%;
  padding: 0.2rem 0;
}

.install-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
}

.install-dot.active {
  background: var(--state-success);
}

.install-dot.inactive {
  background: var(--text-tertiary);
}

.install-name {
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  flex-shrink: 0;
}

.install-path {
  font-family: var(--font-mono);
  font-size: 0.73rem;
  color: var(--text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
  min-width: 0;
}

.install-path.muted {
  font-family: var(--font-sans);
  color: var(--text-tertiary);
}

.install-actions {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  flex-shrink: 0;
}

.icon-action-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 22px;
  border-radius: 4px;
  background: var(--surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.icon-action-btn:hover {
  background: #2F374A;
  color: var(--text-primary);
}

/* VPN & Advanced Block */
.vpn-info-block {
  padding: 0.65rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.vpn-status-lines {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.vpn-line {
  font-size: 0.78rem;
  color: var(--text-secondary);
}

.vpn-btn-row {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

/* Collapsible DNS Subpanel */
.dns-collapse-trigger {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  background: none;
  border: none;
  color: var(--text-secondary);
  font: inherit;
  font-size: 0.78rem;
  font-weight: 500;
  cursor: pointer;
  align-self: flex-start;
  padding: 0.1rem 0;
}

.dns-collapse-trigger:hover {
  color: var(--text-primary);
}

.caret-icon {
  transition: transform 0.18s ease;
}

.dns-collapse-trigger[aria-expanded="false"] .caret-icon {
  transform: rotate(-90deg);
}

.dns-subpanel {
  border-left: 1px solid var(--border-strong);
  margin-left: 0.3rem;
  padding-left: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.dns-subpanel[hidden] {
  display: none !important;
}

.dns-order-hint {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.74rem;
  color: var(--text-tertiary);
}

.dns-server-list {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.dns-server-item {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.2rem 0.35rem;
  margin-inline: -0.35rem;
  border-radius: var(--radius-sm);
  transition: background-color 0.15s ease;
}

.dns-server-item.dragging {
  opacity: 0.5;
  background: var(--surface-elevated);
}

.drag-handle-btn {
  display: inline-flex;
  align-items: center;
  color: var(--text-tertiary);
  cursor: grab;
}

.drag-handle-btn:active {
  cursor: grabbing;
}

.dns-server-label {
  font-size: 0.84rem;
  font-weight: 500;
  color: var(--text-primary);
  cursor: pointer;
}

.dns-server-label.muted {
  color: var(--text-secondary);
  font-weight: 400;
}

.dns-unset {
  color: var(--text-tertiary);
}

.sub-divider {
  margin-block: 0.1rem;
}

.custom-dns-field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-top: 0.15rem;
}

.input-action-row {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.apply-btn {
  white-space: nowrap;
  padding-inline: 0.85rem;
  min-height: 36px;
}

.field-feedback {
  font-size: 0.76rem;
  min-height: 1rem;
  color: var(--text-tertiary);
}

.field-feedback.is-error {
  color: var(--state-error);
}

.field-feedback.is-valid {
  color: var(--state-success);
}

/* ==========================================
   Useful Links Section (Compact SaaS Cards)
   ========================================== */
.links-section {
  padding-block: 2.75rem 3.5rem;
  border-top: 1px solid var(--border-subtle);
  background: var(--bg-secondary);
}

.section-header {
  margin-bottom: 1.35rem;
}

.section-title {
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 0.2rem;
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

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

.resource-card {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 1.1rem 1.15rem;
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid var(--border-subtle);
  text-decoration: none;
  color: var(--text-primary);
  min-width: 0;
  max-width: 100%;
  transition: background-color 0.18s ease, border-color 0.18s ease, transform 0.18s ease;
}

.resource-card:hover,
.resource-card:focus-visible {
  background: var(--surface-elevated);
  border-color: var(--accent-primary-border);
  transform: translateY(-2px);
  outline: none;
}

.resource-card-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 0;
}

.resource-icon-box {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  flex-shrink: 0;
  transition: border-color 0.18s ease, color 0.18s ease;
}

.resource-card:hover .resource-icon-box {
  border-color: var(--accent-primary-border);
  color: var(--accent-primary);
}

.resource-title-wrap {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.resource-title {
  font-size: 0.925rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.3;
}

.resource-domain {
  font-family: var(--font-mono);
  font-size: 0.73rem;
  color: var(--text-tertiary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.resource-arrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: var(--radius-sm);
  color: var(--text-tertiary);
  flex-shrink: 0;
  transition: color 0.18s ease, transform 0.18s ease, background-color 0.18s ease;
}

.resource-card:hover .resource-arrow {
  color: var(--accent-primary);
  background: var(--accent-primary-soft);
  transform: translate(1px, -1px);
}

.resource-desc {
  color: var(--text-secondary);
  font-size: 0.82rem;
  line-height: 1.5;
}

/* ==========================================
   Footer & Toast
   ========================================== */
.site-footer {
  border-top: 1px solid var(--border-subtle);
  padding-block: 1.25rem;
  background: var(--bg-primary);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

.footer-brand strong {
  color: var(--accent-secondary);
}

.footer-copy {
  font-size: 0.78rem;
  color: var(--text-tertiary);
}

.toast {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 60;
  padding: 0.65rem 1rem;
  border-radius: var(--radius-md);
  background: var(--surface-elevated);
  border: 1px solid var(--accent-primary-border);
  color: var(--text-primary);
  font-size: 0.82rem;
  font-weight: 500;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.5);
}

.toast[hidden] {
  display: none !important;
}

/* ==========================================
   Responsive Design
   ========================================== */
@media (max-width: 1024px) {
  .workspace-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 1.75rem;
  }
  .assistant-column {
    position: static;
  }
  .links-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .container {
    padding-inline: 1rem;
  }
  .header-inner {
    height: 52px;
  }
  .header-divider,
  .header-nav {
    display: none;
  }
  .workspace-section {
    padding-block: 1.25rem 2.25rem;
  }
  .main-title {
    font-size: 1.4rem;
  }
  .subtitle {
    font-size: 0.85rem;
  }
  .assistant-panel-header {
    padding: 0.8rem 0.95rem 0.75rem;
  }
  .task-item {
    padding: 0.65rem 0.95rem;
    gap: 0.6rem;
  }
  .proxy-section {
    padding: 0.85rem 0.95rem 0.95rem;
  }
  .proxy-item {
    flex-direction: column;
    align-items: stretch;
    gap: 0.45rem;
  }
  .copy-proxy-btn {
    justify-content: center;
    width: 100%;
  }
  .unlocker-body {
    padding: 0.75rem;
    gap: 0.85rem;
  }
  .unlocker-surface {
    padding: 0.2rem 0.75rem;
  }
  .install-item {
    flex-wrap: wrap;
    row-gap: 0.15rem;
  }
  .install-path {
    flex-basis: 100%;
    padding-left: 0.95rem;
    order: 3;
  }
  .install-actions {
    margin-left: auto;
  }
  .input-action-row {
    flex-direction: column;
    align-items: stretch;
  }
  .apply-btn {
    width: 100%;
  }
  .vpn-btn-row {
    flex-wrap: wrap;
  }
  .vpn-btn-row .unlocker-btn {
    flex: 1;
    min-width: 0;
    text-align: center;
  }
  .links-section {
    padding-block: 2rem 2.5rem;
  }
  .links-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.75rem;
  }
  .info-btn::after {
    display: none;
  }
  .toast {
    left: 12px;
    right: 12px;
    bottom: 12px;
    text-align: center;
  }
}