/* ===== TOKENS ===== */
:root {
  --font-body: 'General Sans', 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 0.875rem;
  --radius-xl: 1.25rem;

  --transition: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --content-default: 960px;
  --content-wide: 1140px;
}

/* ===== DARK (default) ===== */
:root, [data-theme='dark'] {
  --color-bg: #0a0a0b;
  --color-surface: #111113;
  --color-surface-2: #18181b;
  --color-surface-3: #1e1e22;
  --color-border: #27272a;
  --color-border-subtle: #1e1e22;
  --color-text: #ececef;
  --color-text-muted: #8b8b92;
  --color-text-faint: #52525a;
  --color-primary: #00c8ff;
  --color-primary-dim: rgba(0, 200, 255, 0.08);
  --color-primary-hover: #33d4ff;
  --color-success: #34d399;
  --color-success-dim: rgba(52, 211, 153, 0.1);
  --color-error: #f87171;
  --color-error-dim: rgba(248, 113, 113, 0.1);
  --color-warning: #fbbf24;
  --color-warning-dim: rgba(251, 191, 36, 0.1);
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.5);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.6);
  --shadow-glow: 0 0 40px rgba(0, 200, 255, 0.08);
}

[data-theme='light'] {
  --color-bg: #fafafa;
  --color-surface: #ffffff;
  --color-surface-2: #f4f4f5;
  --color-surface-3: #e4e4e7;
  --color-border: #d4d4d8;
  --color-border-subtle: #e4e4e7;
  --color-text: #18181b;
  --color-text-muted: #71717a;
  --color-text-faint: #a1a1aa;
  --color-primary: #0891b2;
  --color-primary-dim: rgba(8, 145, 178, 0.06);
  --color-primary-hover: #06b6d4;
  --color-success: #059669;
  --color-success-dim: rgba(5, 150, 105, 0.08);
  --color-error: #dc2626;
  --color-error-dim: rgba(220, 38, 38, 0.08);
  --color-warning: #d97706;
  --color-warning-dim: rgba(217, 119, 6, 0.08);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.1);
  --shadow-glow: 0 0 40px rgba(8, 145, 178, 0.06);
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme]) {
    --color-bg: #fafafa;
    --color-surface: #ffffff;
    --color-surface-2: #f4f4f5;
    --color-surface-3: #e4e4e7;
    --color-border: #d4d4d8;
    --color-border-subtle: #e4e4e7;
    --color-text: #18181b;
    --color-text-muted: #71717a;
    --color-text-faint: #a1a1aa;
    --color-primary: #0891b2;
    --color-primary-dim: rgba(8, 145, 178, 0.06);
    --color-primary-hover: #06b6d4;
    --color-success: #059669;
    --color-success-dim: rgba(5, 150, 105, 0.08);
    --color-error: #dc2626;
    --color-error-dim: rgba(220, 38, 38, 0.08);
    --color-warning: #d97706;
    --color-warning-dim: rgba(217, 119, 6, 0.08);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.1);
    --shadow-glow: 0 0 40px rgba(8, 145, 178, 0.06);
  }
}

/* ===== HEADER ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--color-bg) 85%, transparent);
  backdrop-filter: blur(16px) saturate(1.4);
  -webkit-backdrop-filter: blur(16px) saturate(1.4);
  border-bottom: 1px solid var(--color-border-subtle);
}

.header-inner {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: var(--space-3) var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: var(--color-text);
  font-weight: 600;
  font-size: var(--text-sm);
  letter-spacing: -0.01em;
}

.logo svg {
  color: var(--color-primary);
}

.header-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  margin-left: auto;
}

.nav-link {
  text-decoration: none;
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  font-weight: 500;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
  letter-spacing: 0.01em;
}

.nav-link:hover {
  color: var(--color-text);
  background: var(--color-primary-dim);
}

.theme-toggle {
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
}

.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-2);
}

.theme-toggle svg {
  display: block;
}

/* ===== HERO ===== */
.hero {
  padding: clamp(var(--space-16), 8vw, var(--space-24)) var(--space-6);
  text-align: center;
}

.hero-inner {
  max-width: 640px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-primary);
  background: var(--color-primary-dim);
  border: 1px solid color-mix(in srgb, var(--color-primary) 15%, transparent);
  padding: var(--space-1) var(--space-4);
  border-radius: var(--radius-sm);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  margin-bottom: var(--space-6);
}

.hero-title {
  font-size: var(--text-2xl);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.1;
  margin-bottom: var(--space-5);
}

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

.hero-sub {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: var(--space-10);
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}

/* ===== UPLOAD ZONE ===== */
.upload-zone {
  position: relative;
  border: 1.5px dashed var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-surface);
  cursor: pointer;
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}

.upload-zone:hover, .upload-zone:focus-visible {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow);
  background: var(--color-surface-2);
}

.upload-zone.dragging {
  border-color: var(--color-primary);
  background: var(--color-primary-dim);
  box-shadow: var(--shadow-glow), inset 0 0 60px var(--color-primary-dim);
}

.upload-zone.uploading .upload-zone-inner {
  opacity: 0;
  pointer-events: none;
}

.upload-zone.success .upload-zone-inner {
  opacity: 0;
  pointer-events: none;
}

.upload-zone-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-12) var(--space-8);
  transition: opacity 300ms ease;
}

.upload-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--color-primary-dim);
  color: var(--color-primary);
  border: 1px solid color-mix(in srgb, var(--color-primary) 12%, transparent);
}

.upload-text {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.upload-primary {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
}

.upload-secondary {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.upload-btn {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-6);
  background: var(--color-primary);
  color: #000;
  font-size: var(--text-xs);
  font-weight: 600;
  border-radius: var(--radius-sm);
  letter-spacing: 0.01em;
  transition: background var(--transition), transform var(--transition);
}

.upload-zone:hover .upload-btn {
  background: var(--color-primary-hover);
}

.upload-zone:active .upload-btn {
  transform: scale(0.97);
}

/* Progress */
.upload-progress {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  opacity: 0;
  pointer-events: none;
  transition: opacity 300ms ease;
}

.upload-zone.uploading .upload-progress {
  opacity: 1;
}

.progress-bar {
  width: 200px;
  height: 4px;
  background: var(--color-surface-3);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  width: 0%;
  background: var(--color-primary);
  border-radius: var(--radius-sm);
  transition: width 100ms linear;
}

.progress-text {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-weight: 500;
}

/* Success */
.upload-success {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  opacity: 0;
  pointer-events: none;
  transition: opacity 300ms ease;
}

.upload-zone.success .upload-success {
  opacity: 1;
}

.upload-success svg {
  color: var(--color-success);
}

.success-text {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-success);
}

.success-url {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  background: var(--color-surface-2);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border-subtle);
  cursor: text;
  user-select: all;
  word-break: break-all;
  max-width: 90%;
}

/* Upload meta */
.upload-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  margin-top: var(--space-4);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  flex-wrap: wrap;
}

.upload-meta code {
  font-family: var(--font-mono);
  color: var(--color-text-muted);
  font-size: inherit;
}

.upload-meta-sep {
  opacity: 0.4;
}

/* ===== SECTIONS ===== */
.section {
  padding: clamp(var(--space-16), 8vw, var(--space-24)) var(--space-6);
}

.section-alt {
  background: var(--color-surface);
}

.section-inner {
  max-width: var(--content-wide);
  margin: 0 auto;
}

.section-label {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-3);
}

.section-title {
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-10);
}

/* ===== STATUS ===== */
.status-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}

@media (max-width: 768px) {
  .status-grid {
    grid-template-columns: 1fr;
  }
}

.status-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.section-alt .status-card {
  background: var(--color-surface-2);
}

.status-card:hover {
  border-color: var(--color-border);
}

.status-card-header {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-text-faint);
  flex-shrink: 0;
  transition: background 300ms ease;
}

.status-dot.up {
  background: var(--color-success);
  box-shadow: 0 0 8px var(--color-success-dim);
}

.status-dot.down {
  background: var(--color-error);
  box-shadow: 0 0 8px var(--color-error-dim);
}

.status-name {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.status-badge {
  margin-left: auto;
  font-size: var(--text-xs);
  font-weight: 500;
  padding: 2px var(--space-2);
  border-radius: var(--radius-sm);
  color: var(--color-text-faint);
  background: var(--color-surface-3);
  text-transform: lowercase;
}

.status-badge.up {
  color: var(--color-success);
  background: var(--color-success-dim);
}

.status-badge.down {
  color: var(--color-error);
  background: var(--color-error-dim);
}

.status-ip {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-bottom: var(--space-4);
}

.status-details {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border-subtle);
}

.status-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.status-val {
  font-family: var(--font-mono);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}

.status-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-subtle);
}

.status-footer-text {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.status-refresh {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-text-muted);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border-subtle);
  background: var(--color-surface);
}

.status-refresh:hover {
  color: var(--color-text);
  border-color: var(--color-border);
  background: var(--color-surface-2);
}

.status-refresh svg {
  display: block;
}

.status-refresh.spinning svg {
  animation: spin 0.8s linear infinite;
}

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

/* ===== DOCS GRID ===== */
.docs-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

@media (max-width: 768px) {
  .docs-grid {
    grid-template-columns: 1fr;
  }
}

.doc-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}

.doc-card-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-dim);
  color: var(--color-primary);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-4);
  border: 1px solid color-mix(in srgb, var(--color-primary) 10%, transparent);
}

.doc-card-icon svg {
  display: block;
}

.doc-card-title {
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--space-2);
  letter-spacing: -0.01em;
}

.doc-card-desc {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.5;
  margin-bottom: var(--space-4);
}

/* ===== CODE BLOCKS ===== */
.code-block {
  background: var(--color-bg);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.section-alt .code-block {
  background: var(--color-surface);
  border-color: var(--color-border-subtle);
}

[data-theme='light'] .code-block,
[data-theme='light'] .section-alt .code-block {
  background: var(--color-surface-2);
}

.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-2) var(--space-3);
  border-bottom: 1px solid var(--color-border-subtle);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  font-weight: 500;
}

.copy-btn {
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-text-faint);
  padding: 2px var(--space-2);
  border-radius: var(--radius-sm);
}

.copy-btn:hover {
  color: var(--color-primary);
  background: var(--color-primary-dim);
}

.copy-btn.copied {
  color: var(--color-success);
}

.code-block pre {
  padding: var(--space-3) var(--space-4);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.code-block code {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  line-height: 1.65;
  color: var(--color-text-muted);
  white-space: pre;
}

/* ===== ARCHITECTURE ===== */
.arch-flow {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-bottom: var(--space-12);
}

.arch-step {
  display: flex;
  align-items: flex-start;
  gap: var(--space-5);
}

.arch-num {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-dim);
  color: var(--color-primary);
  border: 1px solid color-mix(in srgb, var(--color-primary) 15%, transparent);
  border-radius: 50%;
  font-size: var(--text-xs);
  font-weight: 700;
  flex-shrink: 0;
  font-variant-numeric: tabular-nums;
}

.arch-content {
  flex: 1;
  padding-bottom: var(--space-5);
}

.arch-content h3 {
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--space-1);
  letter-spacing: -0.01em;
}

.arch-content p {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.55;
}

.arch-content code {
  font-family: var(--font-mono);
  font-size: inherit;
  color: var(--color-primary);
  background: var(--color-primary-dim);
  padding: 1px 5px;
  border-radius: 3px;
}

.arch-connector {
  width: 1px;
  height: 16px;
  background: var(--color-border);
  margin-left: 15px;
}

/* ===== STACK TABLE ===== */
.stack-title {
  font-size: var(--text-lg);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-5);
}

.stack-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
  margin-bottom: var(--space-12);
}

@media (max-width: 640px) {
  .stack-grid {
    grid-template-columns: 1fr;
  }
}

.stack-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
}

.stack-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-weight: 500;
}

.stack-value {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text);
  text-align: right;
}

/* ===== NODES TABLE ===== */
.nodes-table {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.nodes-table table {
  min-width: 600px;
}

.nodes-table th,
.nodes-table td {
  text-align: left;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-xs);
  border-bottom: 1px solid var(--color-border-subtle);
}

.nodes-table th {
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.nodes-table td {
  color: var(--color-text);
}

.nodes-table code {
  font-family: var(--font-mono);
  font-size: inherit;
  color: var(--color-primary);
}

.nodes-table tr:last-child td {
  border-bottom: none;
}

/* ===== FOOTER ===== */
.footer {
  border-top: 1px solid var(--color-border-subtle);
  padding: var(--space-6);
}

.footer-inner {
  max-width: var(--content-wide);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  flex-wrap: wrap;
}

.footer-sep {
  opacity: 0.3;
}

/* ===== AUTH MODAL ===== */
.auth-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 200ms ease;
}

.auth-overlay.visible {
  opacity: 1;
  pointer-events: auto;
}

.auth-modal {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  width: 100%;
  max-width: 380px;
  margin: var(--space-4);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  box-shadow: var(--shadow-lg);
  transform: translateY(8px);
  transition: transform 200ms ease;
}

.auth-overlay.visible .auth-modal {
  transform: translateY(0);
}

.auth-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--color-primary-dim);
  color: var(--color-primary);
  border: 1px solid color-mix(in srgb, var(--color-primary) 12%, transparent);
}

.auth-title {
  font-size: var(--text-lg);
  font-weight: 600;
  letter-spacing: -0.02em;
}

.auth-desc {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-align: center;
}

.auth-input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--color-text);
  text-align: center;
  letter-spacing: 0.05em;
}

.auth-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-dim);
}

.auth-input.error {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px var(--color-error-dim);
}

.auth-error {
  font-size: var(--text-xs);
  color: var(--color-error);
  min-height: 1.2em;
}

.auth-actions {
  display: flex;
  gap: var(--space-3);
  width: 100%;
}

.auth-cancel {
  flex: 1;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border-subtle);
}

.auth-cancel:hover {
  color: var(--color-text);
  background: var(--color-surface-3);
}

.auth-submit {
  flex: 1;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 600;
  color: #000;
  background: var(--color-primary);
}

.auth-submit:hover {
  background: var(--color-primary-hover);
}

/* Locked indicator on upload zone */
.upload-lock {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-top: var(--space-2);
}

.upload-lock svg {
  display: inline-block;
  width: 14px;
  height: 14px;
}

.upload-lock.unlocked {
  color: var(--color-success);
}

/* ===== VPN SECTION ===== */
.vpn-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.vpn-header .section-title {
  margin-bottom: 0;
}

.vpn-status {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}

.vpn-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-text-faint);
  transition: background 300ms ease;
}

.vpn-status-dot.active {
  background: var(--color-success);
  box-shadow: 0 0 8px var(--color-success-dim);
}

.vpn-create {
  margin-top: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}

.vpn-create-row {
  display: flex;
  align-items: flex-end;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.vpn-field {
  flex: 1;
  min-width: 140px;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.vpn-label {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.vpn-input,
.vpn-select {
  padding: var(--space-2) var(--space-3);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-family: var(--font-body);
  color: var(--color-text);
}

.vpn-input:focus,
.vpn-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-dim);
}

.vpn-input::placeholder {
  color: var(--color-text-faint);
}

.vpn-generate {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-5);
  background: var(--color-primary);
  color: #000;
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--radius-md);
  white-space: nowrap;
  transition: background var(--transition), transform var(--transition);
  height: 38px;
}

.vpn-generate:hover {
  background: var(--color-primary-hover);
}

.vpn-generate:active {
  transform: scale(0.97);
}

.vpn-generate:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.vpn-result {
  margin-top: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-success);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  animation: fadeIn 300ms ease;
}

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

.vpn-result-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
  gap: var(--space-3);
}

.vpn-result-info {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-success);
  font-size: var(--text-sm);
  font-weight: 600;
}

.vpn-result-info code {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  background: var(--color-surface-2);
  padding: 2px var(--space-2);
  border-radius: var(--radius-sm);
  font-weight: 500;
}

.vpn-download {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--color-success);
  color: #000;
  font-size: var(--text-xs);
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: opacity var(--transition);
}

.vpn-download:hover {
  opacity: 0.85;
}

.vpn-warning {
  margin-top: var(--space-4);
  font-size: var(--text-xs);
  color: var(--color-warning);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.vpn-peers-wrap {
  margin-top: var(--space-8);
}

.vpn-peers-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
}

.vpn-peers-title {
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: -0.01em;
}

#vpnPeersTable {
  background: var(--color-surface);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
}

/* ===== VPN LIVE PEERS ===== */
.vpn-live-wrap {
  margin-top: var(--space-8);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-border-subtle);
}

.vpn-live-meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.vpn-live-ts {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  font-variant-numeric: tabular-nums;
}

.vpn-live-nodes {
  display: flex;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
}

.vpn-live-node {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  background: var(--color-surface);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-text-muted);
}

.vpn-live-node-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-success);
  flex-shrink: 0;
}

.vpn-live-node-dot.err {
  background: var(--color-error);
}

.vpn-live-table-wrap {
  margin-top: 0;
}

.live-status-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 2px var(--space-2);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: lowercase;
  white-space: nowrap;
}

.live-status-badge.online {
  color: var(--color-success);
  background: var(--color-success-dim);
}

.live-status-badge.offline {
  color: var(--color-text-faint);
  background: var(--color-surface-3);
}

.live-status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}

.live-status-badge.online .live-status-dot {
  background: var(--color-success);
  box-shadow: 0 0 6px var(--color-success-dim);
}

.live-status-badge.offline .live-status-dot {
  background: var(--color-text-faint);
}

.live-server-tag {
  display: inline-block;
  padding: 1px var(--space-2);
  background: var(--color-primary-dim);
  color: var(--color-primary);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  font-weight: 500;
  font-family: var(--font-mono);
}

.live-transfer {
  display: flex;
  flex-direction: column;
  gap: 1px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.live-transfer-rx {
  color: var(--color-success);
}

.live-transfer-tx {
  color: var(--color-primary);
}

/* ===== FILE MANAGER ===== */
.fm-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.fm-header .section-title {
  margin-bottom: 0;
}

.fm-stats {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
  margin-top: var(--space-1);
}

.fm-stat {
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-text-muted);
  font-variant-numeric: tabular-nums;
}

.fm-stat-sep {
  color: var(--color-text-faint);
  opacity: 0.5;
}

.fm-table-wrap {
  margin-top: var(--space-6);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  background: var(--color-bg);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
}

[data-theme='light'] .fm-table-wrap {
  background: var(--color-surface-2);
}

.fm-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 500px;
}

.fm-table thead th {
  text-align: left;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--color-border-subtle);
  white-space: nowrap;
}

.fm-table thead th:last-child {
  width: 80px;
  text-align: right;
}

.fm-table tbody tr {
  transition: background var(--transition);
}

.fm-table tbody tr:hover {
  background: var(--color-surface-2);
}

[data-theme='light'] .fm-table tbody tr:hover {
  background: var(--color-surface-3);
}

.fm-table tbody td {
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-xs);
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border-subtle);
  vertical-align: middle;
}

.fm-table tbody tr:last-child td {
  border-bottom: none;
}

.fm-name {
  max-width: 320px;
}

.fm-name-text {
  display: block;
  font-family: var(--font-mono);
  font-weight: 500;
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.fm-size {
  font-family: var(--font-mono);
  color: var(--color-text-muted);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.fm-date {
  color: var(--color-text-muted);
  white-space: nowrap;
}

.fm-actions {
  text-align: right;
  white-space: nowrap;
}

.fm-copy, .fm-delete {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: var(--radius-sm);
  color: var(--color-text-faint);
  transition: color var(--transition), background var(--transition);
}

.fm-copy:hover {
  color: var(--color-primary);
  background: var(--color-primary-dim);
}

.fm-copy.copied {
  color: var(--color-success);
}

.fm-delete:hover {
  color: var(--color-error);
  background: var(--color-error-dim);
}

.fm-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  padding: var(--space-12) var(--space-4);
  color: var(--color-text-faint);
  font-size: var(--text-xs);
}

.files-loading-row td,
.files-error-row td {
  text-align: center;
  padding: var(--space-8) var(--space-4);
  color: var(--color-text-muted);
  font-size: var(--text-xs);
}

.files-error-row td {
  color: var(--color-error);
}

.files-spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  vertical-align: middle;
  margin-right: var(--space-2);
}

/* ===== LIVE PEERS TABLE ===== */
.vpn-live-wrap {
  margin-top: var(--space-8);
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-6);
}

.vpn-live-meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.vpn-live-ts {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  font-family: var(--font-mono);
}

.vpn-live-nodes {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  margin-bottom: var(--space-4);
}

.live-node-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  border-radius: 999px;
  font-size: var(--text-xs);
  font-weight: 500;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
}

.live-node-pill .node-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-text-faint);
}

.live-node-pill.online .node-dot {
  background: var(--color-success);
}

.live-node-pill.online {
  color: var(--color-text);
}

.live-node-pill.offline .node-dot {
  background: var(--color-error);
}

.live-node-pill.offline {
  color: var(--color-text-faint);
}

.live-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.03em;
}

.live-status-badge.connected {
  background: rgba(52, 211, 153, 0.12);
  color: var(--color-success);
}

.live-status-badge.disconnected {
  background: rgba(113, 113, 122, 0.12);
  color: var(--color-text-faint);
}

.live-status-badge .badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.live-status-badge.connected .badge-dot {
  background: var(--color-success);
  box-shadow: 0 0 6px rgba(52, 211, 153, 0.5);
}

.live-status-badge.disconnected .badge-dot {
  background: var(--color-text-faint);
}

.live-transfer {
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  color: var(--color-text-muted);
  white-space: nowrap;
}

.live-transfer .rx {
  color: var(--color-success);
}

.live-transfer .tx {
  color: var(--color-primary);
}

.live-node-tag {
  display: inline-block;
  padding: 1px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  font-family: var(--font-mono);
  background: var(--color-primary-dim);
  color: var(--color-primary);
  letter-spacing: 0.02em;
}

.live-handshake {
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  color: var(--color-text-muted);
}

.vpn-live-table-wrap {
  overflow-x: auto;
}

/* ===== MOBILE NAV ===== */
@media (max-width: 640px) {
  .header-nav {
    display: none;
  }

  .header-inner {
    padding: var(--space-3) var(--space-4);
  }

  .hero-inner {
    padding: 0 var(--space-2);
  }

  .upload-zone-inner {
    padding: var(--space-8) var(--space-4);
  }

  .arch-step {
    gap: var(--space-3);
  }

  .docs-grid {
    gap: var(--space-3);
  }

  .doc-card {
    padding: var(--space-4);
  }

  .fm-header {
    flex-direction: column;
    gap: var(--space-2);
  }

  .fm-date {
    display: none;
  }
}