:root {
  --primary: #0f52ba;
  --primary-hover: #0b438f;
  --primary-soft: #ebf2ff;
  --cyber-cyan: #00f0ff;
  --cyber-blue: #0a84ff;
  --accent-mint: #5eead4;
  --bg-dark: #0b0f19;
  --bg-titanium: #0f172a;
  --bg-slate: #162032;
  --page: #f4f6f8;
  --surface: #ffffff;
  --surface-muted: #f8fafc;
  --ink: #0f172a;
  --text: #334155;
  --muted: #64748b;
  --border: #e2e8f0;
  --border-strong: #cbd5e1;
  --border-dark: #1e293b;
  --success: #047857;
  --success-soft: #ecfdf5;
  --warning: #b45309;
  --warning-soft: #fffbeb;
  --danger: #b91c1c;
  --danger-soft: #fef2f2;
  --focus: rgba(15, 82, 186, 0.35);
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -2px rgba(15, 23, 42, 0.04);
  --shadow-float: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.05);
  --font: "Segoe UI Variable Text", "Segoe UI", "PingFang SC", "Microsoft YaHei UI", system-ui, sans-serif;
  --mono: "Cascadia Mono", "SFMono-Regular", Consolas, monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html, body, * { scrollbar-width: none; }
html::-webkit-scrollbar, body::-webkit-scrollbar, *::-webkit-scrollbar { width: 0; height: 0; display: none; }
html { font-family: var(--font); color: var(--text); background: var(--page); text-size-adjust: 100%; -webkit-tap-highlight-color: transparent; }
body { margin: 0; min-height: 100dvh; line-height: 1.5; color: var(--text); background: var(--page); }
body.auth-active { height: 100dvh; overflow: hidden; }
.hidden { display: none !important; }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); border: 0; }

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
code, pre { font-family: var(--mono); font-size: 0.9em; }

.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  z-index: 100;
  padding: 10px 16px;
  border-radius: 8px;
  background: var(--ink);
  color: #ffffff;
  font-weight: 600;
  transition: top 0.15s ease-in-out;
}
.skip-link:focus { top: 16px; outline: 3px solid var(--cyber-blue); }

/* Common Buttons & Inputs */
.button {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 16px;
  border: 1px solid var(--primary);
  border-radius: 8px;
  background: var(--primary);
  color: #ffffff;
  font-family: var(--font);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.2;
  cursor: pointer;
  text-decoration: none;
  transition: background-color 0.15s ease, border-color 0.15s ease, opacity 0.15s ease;
}
.button:hover { background: var(--primary-hover); border-color: var(--primary-hover); text-decoration: none; }
.button:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
.button[disabled], .button.is-disabled { opacity: 0.5; cursor: not-allowed; pointer-events: none; }
.button-secondary { background: var(--surface); color: var(--text); border-color: var(--border-strong); }
.button-secondary:hover { background: var(--surface-muted); border-color: var(--muted); }
.button-quiet { background: transparent; color: var(--text); border-color: transparent; }
.button-quiet:hover { background: var(--surface-muted); color: var(--ink); }
.button-danger { background: var(--danger-soft); color: var(--danger); border-color: #fecaca; }
.button-danger:hover { background: #fee2e2; border-color: #fca5a5; }
.button-large { min-height: 48px; padding: 12px 24px; font-size: 15px; border-radius: 10px; }
.button-small { min-height: 32px; padding: 4px 10px; font-size: 12px; border-radius: 6px; }
.button-block { width: 100%; }
.button svg { width: 18px; height: 18px; flex-shrink: 0; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

.icon-button {
  width: 36px;
  height: 36px;
  display: inline-grid;
  place-items: center;
  padding: 0;
  border: 1px solid transparent;
  border-radius: 8px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
}
.icon-button:hover { background: var(--surface-muted); color: var(--ink); }
.icon-button:focus-visible { outline: 2px solid var(--primary); }
.icon-button svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

/* Status Badges */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  line-height: 1;
}
.status-badge::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.status-badge.ok { color: var(--success); background: var(--success-soft); }
.status-badge.warn { color: var(--warning); background: var(--warning-soft); }
.status-badge.error { color: var(--danger); background: var(--danger-soft); }
.status-badge.neutral { color: var(--muted); background: #f1f5f9; }

/* Landing Page: Dark Portal Stage */
.landing-screen { min-height: 100dvh; background: var(--bg-dark); color: #f8fafc; }
.marketing-header { height: 64px; border-bottom: 1px solid var(--border-dark); background: rgba(11, 15, 25, 0.95); backdrop-filter: blur(8px); }
.marketing-nav {
  width: min(1140px, calc(100% - 48px));
  height: 100%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand-lockup { display: flex; align-items: center; gap: 10px; font-size: 17px; font-weight: 700; color: #ffffff; text-decoration: none; }
.brand-lockup:hover { text-decoration: none; }
.brand-mark { border-radius: 9px; flex-shrink: 0; }
.marketing-nav-actions { display: flex; align-items: center; gap: 8px; }
.marketing-github { color: #cbd5e1; border-color: var(--border-dark); }
.marketing-github:hover { color: #ffffff; background: var(--border-dark); }
.marketing-login { color: #ffffff; background: var(--bg-titanium); border-color: var(--border-dark); }
.marketing-login:hover { background: #1e293b; border-color: var(--cyber-blue); }

.dark-portal-stage {
  width: min(1140px, calc(100% - 48px));
  margin: 0 auto;
  padding: 64px 0 52px;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  align-items: center;
  gap: clamp(40px, 6vw, 80px);
}
.hero-copy { max-width: 620px; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px;
  border: 1px solid rgba(0, 240, 255, 0.3);
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.8);
  color: var(--cyber-cyan);
  font-size: 12px;
  font-weight: 650;
  margin-bottom: 18px;
}
.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyber-cyan);
  box-shadow: 0 0 10px var(--cyber-cyan);
}
.hero-copy h1 {
  margin: 0;
  color: #ffffff;
  font-size: clamp(36px, 4.5vw, 52px);
  line-height: 1.18;
  font-weight: 800;
  letter-spacing: -0.02em;
}
.cyber-gradient-text {
  background: linear-gradient(135deg, #00f0ff 0%, #38bdf8 50%, #0a84ff 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-lead { margin: 20px 0 28px; color: #94a3b8; font-size: 17px; line-height: 1.7; }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; }
.hero-actions .button-primary { background: linear-gradient(135deg, #0a84ff 0%, #0f52ba 100%); border: 1px solid var(--cyber-blue); }
.hero-actions .button-secondary { background: var(--bg-titanium); color: #f8fafc; border-color: var(--border-dark); }
.hero-actions .button-secondary:hover { background: #1e293b; border-color: var(--cyber-cyan); }
.release-note { min-height: 20px; margin: 14px 0 0; color: #94a3b8; font-size: 13px; font-variant-numeric: tabular-nums; }
.release-hash { max-width: 560px; margin-top: 8px; color: #64748b; font-size: 12px; }
.release-hash summary { width: max-content; min-height: 28px; display: flex; align-items: center; cursor: pointer; color: var(--cyber-cyan); font-weight: 650; }
.release-hash code { display: block; margin-top: 6px; padding: 9px 11px; overflow-wrap: anywhere; border: 1px solid var(--border-dark); border-radius: 8px; background: #0f172a; color: #38bdf8; font-family: var(--mono); line-height: 1.65; }

.client-preview {
  position: relative;
  width: 100%;
  aspect-ratio: 460 / 680;
  overflow: hidden;
  border: 1px solid var(--border-dark);
  border-radius: 20px;
  background: var(--page);
  color: var(--text);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}
.preview-platform-label { position: absolute; z-index: 2; top: 9px; right: 48px; display: inline-flex; align-items: center; gap: 5px; padding: 3px 8px; border-radius: 999px; color: #38bdf8; background: #0f172a; border: 1px solid var(--border-dark); font-size: 10px; font-weight: 650; }
.preview-platform-label::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--cyber-cyan); }
.client-preview-bar { height: 66px; padding: 0 17px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--border); background: var(--surface); }
.client-preview-brand { min-width: 0; display: grid; grid-template-columns: 34px auto auto; align-items: center; gap: 7px; }
.client-preview-brand img { grid-row: 1 / span 2; border-radius: 8px; }
.client-preview-brand strong { color: var(--ink); font-size: 14px; }
.client-preview-brand small { color: var(--muted); font-size: 11px; }
.preview-more i { display: inline-block; width: 3px; height: 3px; border-radius: 50%; background: var(--muted); margin: 0 1px; }
.client-preview-body { padding: 14px; }
.preview-status-card { padding: 14px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); display: grid; grid-template-columns: 1fr auto; gap: 6px 12px; align-items: center; }
.preview-status-card small { grid-column: 1; color: var(--muted); font-size: 11px; }
.preview-status-card strong { grid-column: 1; color: var(--ink); font-size: 15px; }
.preview-status-card p { grid-column: 1 / -1; margin: 4px 0 0; color: var(--text); font-size: 12px; }
.preview-actions { grid-column: 1 / -1; display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 6px; }
.preview-actions span { min-height: 32px; display: grid; place-items: center; border-radius: 7px; background: var(--primary-soft); color: var(--primary); font-size: 12px; font-weight: 650; }
.preview-actions span:last-child { background: var(--surface-muted); color: var(--text); border: 1px solid var(--border); }
.preview-list-heading { margin: 16px 4px 8px; display: flex; align-items: center; justify-content: space-between; font-size: 12px; }
.preview-list-heading strong { color: var(--ink); font-size: 14px; }
.preview-list-heading small { margin-left: 6px; color: var(--muted); }
.preview-list-heading b { color: var(--primary); font-weight: 650; }
.preview-connection-card { margin-top: 8px; padding: 12px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); }
.preview-card-heading { display: flex; align-items: center; justify-content: space-between; }
.preview-card-heading strong { color: var(--ink); font-size: 13px; }
.preview-card-heading span { display: inline-flex; align-items: center; gap: 4px; color: var(--success); font-size: 11px; font-weight: 600; }
.preview-card-heading span i { width: 6px; height: 6px; border-radius: 50%; background: var(--success); }
.preview-connection-card code { display: block; margin-top: 6px; color: var(--primary); font-size: 11px; }
.preview-connection-card small { display: block; margin-top: 4px; color: var(--muted); font-size: 11px; }

.quick-steps {
  width: min(1140px, calc(100% - 48px));
  margin: 0 auto;
  padding: 40px 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}
.quick-steps article { display: flex; align-items: flex-start; gap: 16px; padding: 20px; border: 1px solid var(--border-dark); border-radius: 14px; background: var(--bg-titanium); }
.quick-steps article span { width: 36px; height: 36px; display: grid; place-items: center; flex-shrink: 0; border-radius: 10px; background: linear-gradient(135deg, #0a84ff 0%, #0f52ba 100%); color: #ffffff; font-weight: 800; font-size: 16px; }
.quick-steps article h2 { margin: 0; color: #ffffff; font-size: 16px; font-weight: 700; }
.quick-steps article p { margin: 4px 0 0; color: #94a3b8; font-size: 13px; }

.platform-section { width: min(1140px, calc(100% - 48px)); margin: 20px auto 60px; padding: 40px; border: 1px solid var(--border-dark); border-radius: 20px; background: var(--bg-titanium); }
.platform-heading .eyebrow { color: var(--cyber-cyan); font-weight: 700; font-size: 12px; letter-spacing: 0.05em; text-transform: uppercase; }
.platform-heading h2 { margin: 6px 0 0; color: #ffffff; font-size: 28px; line-height: 1.25; }
.platform-heading > p:last-child { margin: 10px 0 0; color: #94a3b8; font-size: 14px; }
.platform-grid { margin-top: 28px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.platform-card { min-width: 0; padding: 24px; border: 1px solid var(--border-dark); border-radius: 16px; background: var(--bg-slate); }
.platform-card-windows { border-top: 3px solid var(--cyber-blue); }
.platform-card-linux { border-top: 3px solid var(--cyber-cyan); }
.platform-card-header { display: grid; grid-template-columns: 44px minmax(0, 1fr) auto; align-items: center; gap: 12px; }
.platform-icon { width: 44px; height: 44px; display: grid; place-items: center; border-radius: 12px; color: #fff; background: var(--primary); font-weight: 800; font-size: 18px; }
.platform-icon.terminal { background: #0f172a; color: var(--cyber-cyan); font-family: var(--mono); font-size: 13px; border: 1px solid var(--border-dark); }
.platform-card h3 { margin: 0; color: #ffffff; font-size: 16px; }
.platform-card-header p { margin: 2px 0 0; color: #94a3b8; font-size: 12px; }
.platform-card ul { margin: 20px 0; padding-left: 20px; color: #cbd5e1; font-size: 13px; }
.platform-card li + li { margin-top: 8px; }
.terminal-block { margin: 18px 0 12px; padding: 14px 16px; overflow-x: auto; border-radius: 10px; background: #0b0f19; color: #5eead4; border: 1px solid var(--border-dark); }
.terminal-block code { font-family: var(--mono); font-size: 12px; line-height: 1.75; white-space: nowrap; }
.platform-note { min-height: 42px; margin: 0 0 14px; color: #94a3b8; font-size: 12px; }
.text-link { min-height: 36px; display: inline-flex; align-items: center; gap: 7px; color: var(--cyber-cyan); font-size: 13px; font-weight: 700; text-decoration: none; }
.text-link:hover { text-decoration: underline; text-underline-offset: 3px; }

.marketing-footer { width: min(1140px, calc(100% - 48px)); margin: 0 auto; padding: 32px 0; display: flex; align-items: center; justify-content: space-between; border-top: 1px solid var(--border-dark); color: #64748b; font-size: 13px; }

/* Authentication Screen */
.auth-screen { height: 100dvh; min-height: 0; display: grid; place-items: center; overflow: hidden; padding: 24px 20px; background: var(--bg-dark); }
.auth-card {
  width: min(440px, 100%);
  padding: 36px 32px;
  border: 1px solid var(--border-dark);
  border-radius: 20px;
  background: var(--bg-titanium);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.6);
  color: #f8fafc;
}
.auth-brand { justify-content: center; margin-bottom: 24px; }
.auth-card-heading { text-align: center; margin-bottom: 24px; }
.auth-card-heading h1 { margin: 0; color: #ffffff; font-size: 24px; font-weight: 750; }
.auth-card-heading p { margin: 6px 0 0; color: #94a3b8; font-size: 14px; }
.auth-card label { color: #cbd5e1; }
.auth-card input { background: #0b0f19; color: #ffffff; border-color: var(--border-dark); }
.auth-card input:focus { border-color: var(--cyber-blue); }
.auth-home-link { display: inline-flex; align-items: center; gap: 6px; margin-top: 24px; color: #94a3b8; font-size: 13px; font-weight: 600; text-decoration: none; }
.auth-home-link:hover { color: var(--cyber-cyan); text-decoration: none; }
.auth-home-link svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 2; }

/* Form Fields & Notice */
.form-stack { display: flex; flex-direction: column; gap: 18px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field label { font-size: 13px; font-weight: 600; color: var(--ink); }
.field input, .field select, .field textarea {
  width: 100%;
  min-height: 42px;
  padding: 9px 12px;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  background: var(--surface);
  color: var(--ink);
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.4;
  outline: none;
  transition: border-color 0.15s ease;
}
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px var(--focus); }
.field input[aria-invalid="true"] { border-color: var(--danger); }
.field > label:has(input[type="checkbox"]) { display: inline-flex; width: fit-content; align-items: center; gap: 9px; cursor: pointer; }
.field input[type="checkbox"] { width: 18px; min-height: 18px; height: 18px; margin: 0; padding: 0; accent-color: var(--primary); box-shadow: none; }
.password-field { position: relative; display: flex; align-items: center; }
.password-field input { padding-right: 44px; }
.password-toggle { position: absolute; right: 4px; color: var(--muted); }
.field-error { margin: 4px 0 0; color: var(--danger); font-size: 12px; font-weight: 500; min-height: 18px; }
.helper { margin: 4px 0 0; color: var(--muted); font-size: 12px; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px 16px; }
.form-grid > .field { min-width: 0; }
.form-grid > .field.full { grid-column: 1 / -1; }

.notice { padding: 12px 14px; border-radius: 10px; font-size: 13px; border: 1px solid var(--border); background: var(--surface-muted); }
.notice-icon { width: 18px; height: 18px; flex: 0 0 18px; display: inline-grid; place-items: center; }
.notice-icon svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.notice-warning:has(.notice-icon) { display: grid; grid-template-columns: 18px minmax(0, 1fr); align-items: start; gap: 10px; }
.notice-warning:has(.notice-icon) > span:last-child { min-width: 0; display: flex; flex-direction: column; gap: 2px; }
.notice-warning:has(.notice-icon) small { color: inherit; font-size: 12px; line-height: 1.5; }
.notice-warning { background: var(--warning-soft); border-color: #fde68a; color: var(--warning); }
.notice-warning strong { color: #92400e; }

@media (max-height: 720px) {
  .auth-screen { padding-block: 12px; }
  .auth-card { padding: 24px 28px; border-radius: 16px; }
  .auth-brand { margin-bottom: 14px; }
  .auth-brand .brand-mark { width: 38px; height: 38px; }
  .auth-card-heading { margin-bottom: 14px; }
  .auth-card-heading h1 { font-size: 22px; }
  .form-stack { gap: 12px; }
  .auth-home-link { margin-top: 14px; }
}

@media (max-height: 600px) {
  .auth-card { padding: 18px 24px; }
  .auth-brand { margin-bottom: 10px; }
  .auth-card-heading { margin-bottom: 10px; }
  .auth-card-heading p { margin-top: 3px; }
  .form-stack { gap: 8px; }
  .field { gap: 3px; }
  .field-error { min-height: 0; }
  .auth-home-link { margin-top: 10px; }
}

/* Web App Shell Layout */
.app-shell {
  min-height: 100dvh;
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  background: var(--page);
}
.sidebar {
  position: sticky;
  top: 0;
  height: 100dvh;
  padding: 20px 14px 16px;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--border-dark);
  background: var(--bg-titanium);
  color: #f8fafc;
  z-index: 50;
}
.sidebar-brand { min-height: 48px; display: flex; align-items: center; gap: 10px; padding: 0 6px; }
.sidebar-brand .brand-copy { display: flex; flex-direction: column; }
.sidebar-brand strong { color: #ffffff; font-size: 15px; font-weight: 700; }
.sidebar-brand small { color: #94a3b8; font-size: 11px; }
.sidebar-label { margin: 24px 10px 8px; color: #64748b; font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; }

.nav-list { display: grid; gap: 4px; }
.nav-item {
  position: relative;
  min-height: 42px;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 14px;
  border: 1px solid transparent;
  border-radius: 9px;
  background: transparent;
  color: #cbd5e1;
  font-family: var(--font);
  font-size: 14px;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  transition: all 0.15s ease;
}
.nav-item svg { width: 20px; height: 20px; color: #94a3b8; transition: color 0.15s ease; }
.nav-item:hover { color: #ffffff; background: var(--bg-slate); }
.nav-item:hover svg { color: var(--cyber-blue); }
.nav-item.active {
  color: #ffffff;
  background: #17345f;
  border-color: rgba(0, 240, 255, 0.25);
  font-weight: 700;
}
.nav-item.active::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 3px;
  border-radius: 0 3px 3px 0;
  background: var(--cyber-cyan);
  box-shadow: 0 0 8px var(--cyber-cyan);
}
.nav-item.active svg { color: var(--cyber-cyan); }

.sidebar-session {
  margin-top: auto;
  display: grid;
  grid-template-columns: 10px 1fr;
  align-items: center;
  gap: 10px;
  padding: 12px;
  border: 1px solid var(--border-dark);
  border-radius: 12px;
  background: var(--bg-slate);
}
.status-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--success); }
.status-dot.status-ok { background: #10b981; box-shadow: 0 0 6px #10b981; }
.sidebar-session div { display: flex; flex-direction: column; }
.sidebar-session strong { color: #f8fafc; font-size: 12px; font-weight: 600; }
.sidebar-session small { color: #94a3b8; font-size: 10px; }

.sidebar-footer {
  margin-top: 12px;
  padding-top: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-dark);
}
.user-chip { min-width: 0; display: grid; grid-template-columns: 34px minmax(0, 1fr); align-items: center; gap: 9px; }
.user-chip > span { width: 34px; height: 34px; display: grid; place-items: center; border-radius: 9px; color: #ffffff; background: linear-gradient(135deg, #0a84ff 0%, #0f52ba 100%); font-weight: 750; font-size: 14px; }
.user-chip div { min-width: 0; display: flex; flex-direction: column; }
.user-chip strong { color: #ffffff; font-size: 13px; font-weight: 600; max-width: 110px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.user-chip small { color: #94a3b8; font-size: 10px; max-width: 110px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sidebar-footer .icon-button { color: #94a3b8; }
.sidebar-footer .icon-button:hover { color: #ffffff; background: var(--border-dark); }

.workspace { min-width: 0; display: flex; flex-direction: column; min-height: 100dvh; }
.topbar {
  height: 76px;
  padding: 0 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}
.topbar-context { display: flex; align-items: center; gap: 14px; }
.topbar h1 { margin: 0; color: var(--ink); font-size: 20px; font-weight: 750; line-height: 1.2; }
.page-description { margin: 2px 0 0; color: var(--muted); font-size: 12px; }
.topbar-actions { display: flex; align-items: center; gap: 10px; }

.content { padding: 24px 28px 48px; flex: 1; outline: none; }

/* Panels & Cards */
.panel {
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}

/* Dashboard Overhaul: Tunnel Pulse Primary Console */
.dashboard-hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.9fr);
  gap: 16px;
  margin-bottom: 16px;
}

.tunnel-pulse-card {
  background: linear-gradient(135deg, #0f172a 0%, #162032 100%);
  border: 1px solid var(--border-dark);
  color: #ffffff;
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
}
.tunnel-pulse-card::after {
  content: "";
  position: absolute;
  right: -40px;
  top: -40px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 240, 255, 0.12) 0%, rgba(0, 0, 0, 0) 70%);
  pointer-events: none;
}

.pulse-header { display: flex; align-items: center; justify-content: space-between; }
.pulse-brand { display: flex; align-items: center; gap: 12px; }
.pulse-brand h3 { margin: 0; color: #ffffff; font-size: 17px; font-weight: 750; }
.pulse-brand p { margin: 2px 0 0; color: #94a3b8; font-size: 12px; }

.pulse-core-metrics { margin-top: 24px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.pulse-metric-item { display: flex; flex-direction: column; }
.pulse-label { color: #38bdf8; font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; }
.pulse-value-large { margin-top: 6px; color: #ffffff; font-size: 32px; font-weight: 800; font-family: var(--mono); line-height: 1.1; }
.pulse-value-large small { font-size: 18px; color: #94a3b8; font-weight: 600; }
.pulse-meta { margin-top: 6px; color: #94a3b8; font-size: 11px; }

.health-rail-panel { padding: 20px; display: flex; flex-direction: column; }
.health-rail-header { margin-bottom: 14px; padding-bottom: 12px; border-bottom: 1px solid var(--border); }
.health-rail-list { display: flex; flex-direction: column; gap: 8px; }
.health-rail-item {
  min-height: 36px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface-muted);
  font-size: 12px;
}
.health-rail-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--success); flex-shrink: 0; margin-right: 10px; }
.health-rail-item.warn .health-rail-dot { background: var(--warning); }
.health-rail-item.error .health-rail-dot { background: var(--danger); }
.health-rail-name { font-weight: 600; color: var(--ink); flex: 1; }
.health-rail-val { font-family: var(--mono); color: var(--muted); font-size: 11px; }

.stats-strip-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-bottom: 16px; }
.stat-strip-item {
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  display: flex;
  align-items: center;
  gap: 14px;
  box-shadow: var(--shadow-sm);
}
.stat-strip-icon {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: var(--primary-soft);
  color: var(--primary);
  flex-shrink: 0;
}
.stat-strip-icon svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 2; }
.stat-strip-info { display: flex; flex-direction: column; }
.stat-strip-label { color: var(--muted); font-size: 12px; font-weight: 600; }
.stat-strip-val { color: var(--ink); font-size: 18px; font-weight: 750; margin-top: 2px; }

/* Table Panels */
.table-panel { padding: 0; overflow: hidden; }
.panel-header { padding: 18px 20px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; }
.panel-header h3 { margin: 0; color: var(--ink); font-size: 16px; font-weight: 750; }
.panel-subtle { color: var(--muted); font-size: 12px; margin-top: 2px; display: block; }
.data-table { width: 100%; border-collapse: collapse; table-layout: auto; }
.data-table th { padding: 12px 18px; background: var(--surface-muted); color: var(--muted); font-size: 12px; font-weight: 700; text-align: left; border-bottom: 1px solid var(--border); }
.data-table td { padding: 14px 18px; border-bottom: 1px solid var(--border); font-size: 13px; color: var(--text); vertical-align: middle; }
.data-table tr:last-child td { border-bottom: 0; }
.data-table tr:hover td { background: #f8fafc; }
.cell-primary { display: block; color: var(--ink); font-weight: 650; }
.cell-secondary { display: block; color: var(--muted); font-size: 12px; margin-top: 2px; }
.mono { font-family: var(--mono); }
.actions-cell .actions { display: flex; align-items: center; gap: 6px; }

.config-state { display: flex; flex-direction: column; gap: 2px; }
.config-state small { color: var(--muted); font-size: 11px; }
.drift { color: var(--warning); font-weight: 700; }

/* Audit Event Filter */
.audit-filter-panel { margin-bottom: 16px; }
.audit-filter-form { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)) auto; gap: 14px; align-items: end; }
.audit-filter-actions { display: flex; gap: 8px; }

/* Pagination */
.pagination { padding: 14px 20px; border-top: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; font-size: 13px; color: var(--muted); background: var(--surface); }
.pagination-current { margin: 0 10px; font-weight: 600; color: var(--ink); }

/* Modal & Toast */
.modal {
  width: min(540px, calc(100vw - 32px));
  max-width: none;
  max-height: calc(100dvh - 32px);
  padding: 0;
  border: 0;
  border-radius: 16px;
  overflow: auto;
  background: transparent;
  box-shadow: var(--shadow-float);
}
.modal:has(.form-grid) { width: min(620px, calc(100vw - 32px)); }
.modal::backdrop { background: rgba(11, 15, 25, 0.7); backdrop-filter: blur(4px); }
.modal-frame { width: 100%; padding: 22px 24px; border: 1px solid var(--border); border-radius: 16px; background: var(--surface); color: var(--ink); display: flex; flex-direction: column; gap: 14px; }
.modal-header { display: flex; align-items: flex-start; justify-content: space-between; }
.modal-header h2 { margin: 0; font-size: 18px; font-weight: 750; color: var(--ink); }
.modal-header .eyebrow { margin: 0 0 4px; color: var(--primary); font-size: 11px; font-weight: 700; text-transform: uppercase; }
.modal-footer { display: flex; align-items: center; justify-content: flex-end; gap: 10px; margin-top: 8px; }

.toast-region { position: fixed; bottom: 24px; right: 24px; z-index: 200; display: flex; flex-direction: column; gap: 8px; pointer-events: none; }
.toast { padding: 12px 18px; border-radius: 10px; background: var(--ink); color: #ffffff; font-size: 13px; font-weight: 600; box-shadow: var(--shadow-float); pointer-events: auto; }
.toast.error { background: var(--danger); }

/* Skeletons */
.skeleton { background: linear-gradient(90deg, #e2e8f0 25%, #cbd5e1 50%, #e2e8f0 75%); background-size: 200% 100%; border-radius: 8px; animation: skeleton-loading 1.5s infinite; }
.pulse-skeleton { min-height: 180px; }
.health-skeleton { min-height: 180px; }
.strip-skeleton { min-height: 72px; }
.skeleton-table { min-height: 240px; margin-top: 16px; }
@keyframes skeleton-loading { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

/* Mobile Scrim & Responsive Layout */
.mobile-only { display: none; }
.sidebar-scrim { display: none; position: fixed; inset: 0; z-index: 45; background: rgba(0, 0, 0, 0.5); border: 0; }

@media (max-width: 992px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { position: fixed; left: -260px; top: 0; bottom: 0; width: 240px; transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1); }
  .sidebar.open { transform: translateX(260px); }
  .sidebar-scrim { display: block; opacity: 0; pointer-events: none; transition: opacity 0.25s ease; }
  .sidebar.open ~ .sidebar-scrim { opacity: 1; pointer-events: auto; }
  .mobile-only { display: inline-grid; }
  .dashboard-hero-layout { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .dark-portal-stage { grid-template-columns: 1fr; gap: 36px; padding: 40px 0; }
  .hero-copy h1 { font-size: 34px; }
  .quick-steps { grid-template-columns: 1fr; }
  .platform-grid { grid-template-columns: 1fr; }
  .stats-strip-grid { grid-template-columns: 1fr; }
  .topbar { padding: 0 16px; height: 64px; }
  .content { padding: 16px; }
  .data-table, .data-table tbody, .data-table tr, .data-table td { display: block; width: 100%; }
  .data-table thead { display: none; }
  .data-table tr { margin-bottom: 12px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); padding: 12px; box-shadow: var(--shadow-sm); }
  .data-table td { padding: 6px 0; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; }
  .data-table td:last-child { border-bottom: 0; }
  .data-table td::before { content: attr(data-label); font-weight: 700; color: var(--muted); font-size: 12px; }
  .modal { width: min(520px, calc(100vw - 24px)); max-height: calc(100dvh - 24px); }
  .modal-frame { padding: 18px; }
  .form-grid { grid-template-columns: 1fr; gap: 12px; }
  .form-grid > .field.full { grid-column: auto; }
}

@media (max-height: 640px) and (min-width: 769px) {
  .modal { max-height: calc(100dvh - 20px); }
  .modal-frame { padding: 16px 20px; gap: 10px; }
  .modal-header .eyebrow { margin-bottom: 2px; }
  .form-grid { gap: 8px 14px; }
  .form-grid .field { gap: 3px; }
  .form-grid .field input, .form-grid .field select { min-height: 38px; padding-block: 7px; }
  .modal-footer { margin-top: 2px; }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}

/* Unified Light / Dark themes. These rules intentionally override the earlier
   single-theme presentation without changing the existing component layout. */
:root,
:root[data-theme="light"] {
  --primary: #0369a1;
  --primary-hover: #075985;
  --primary-soft: #f0f9ff;
  --primary-border: #bae6fd;
  --primary-contrast: #ffffff;
  --page: #f8fafc;
  --surface: #ffffff;
  --surface-muted: #f1f5f9;
  --surface-hover: #f8fafc;
  --ink: #0f172a;
  --text: #334155;
  --muted: #64748b;
  --border: #e2e8f0;
  --border-strong: #cbd5e1;
  --success: #047857;
  --success-soft: #ecfdf5;
  --success-border: #a7f3d0;
  --warning: #b45309;
  --warning-soft: #fffbeb;
  --warning-border: #fde68a;
  --danger: #b91c1c;
  --danger-soft: #fef2f2;
  --danger-border: #fecaca;
  --focus: rgba(2, 132, 199, 0.35);
  --overlay: rgba(15, 23, 42, 0.55);
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 5px 14px rgba(15, 23, 42, 0.09);
  --shadow-float: 0 24px 50px rgba(15, 23, 42, 0.16);
  --cyber-cyan: var(--primary);
  --cyber-blue: var(--primary);
  --accent-mint: var(--primary);
  --bg-dark: var(--page);
  --bg-titanium: var(--surface);
  --bg-slate: var(--surface-muted);
  --border-dark: var(--border);
}

:root[data-theme="dark"] {
  --primary: #38bdf8;
  --primary-hover: #7dd3fc;
  --primary-soft: #0c4a6e;
  --primary-border: #0369a1;
  --primary-contrast: #0f172a;
  --page: #0f172a;
  --surface: #1e293b;
  --surface-muted: #27364a;
  --surface-hover: #27364a;
  --ink: #f8fafc;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --border: #334155;
  --border-strong: #475569;
  --success: #34d399;
  --success-soft: #064e3b;
  --success-border: #047857;
  --warning: #fbbf24;
  --warning-soft: #78350f;
  --warning-border: #b45309;
  --danger: #f87171;
  --danger-soft: #7f1d1d;
  --danger-border: #b91c1c;
  --focus: rgba(56, 189, 248, 0.4);
  --overlay: rgba(2, 6, 23, 0.76);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.28);
  --shadow-md: 0 6px 18px rgba(0, 0, 0, 0.32);
  --shadow-float: 0 24px 50px rgba(0, 0, 0, 0.48);
  --cyber-cyan: var(--primary);
  --cyber-blue: var(--primary);
  --accent-mint: var(--primary);
  --bg-dark: var(--page);
  --bg-titanium: var(--surface);
  --bg-slate: var(--surface-muted);
  --border-dark: var(--border);
}

html, body, .landing-screen, .auth-screen, .app-shell { background: var(--page); color: var(--text); }
.marketing-header, .sidebar, .topbar, .auth-card, .platform-section,
.quick-steps article, .platform-card, .client-preview, .client-preview-bar,
.preview-status-card, .preview-connection-card, .panel, .stat-strip-item,
.modal-frame { background: var(--surface); color: var(--text); border-color: var(--border); }
.marketing-header { backdrop-filter: none; box-shadow: var(--shadow-sm); }
.brand-lockup, .sidebar-brand strong, .quick-steps article h2, .platform-heading h2,
.platform-card h3, .auth-card-heading h1, .pulse-brand h3, .pulse-value-large,
.user-chip strong, .sidebar-session strong { color: var(--ink); }
.marketing-github, .marketing-login, .hero-lead, .release-note, .release-hash,
.quick-steps article p, .platform-heading > p:last-child, .platform-card-header p,
.platform-card ul, .platform-note, .marketing-footer, .auth-card-heading p,
.auth-card label, .auth-home-link, .sidebar-brand small, .sidebar-label,
.sidebar-session small, .user-chip small, .pulse-brand p, .pulse-value-large small,
.pulse-meta { color: var(--muted); }
.marketing-github, .marketing-login, .hero-actions .button-secondary {
  background: var(--surface);
  color: var(--text);
  border-color: var(--border-strong);
}
.marketing-github:hover, .marketing-login:hover, .hero-actions .button-secondary:hover {
  background: var(--surface-muted);
  color: var(--ink);
  border-color: var(--primary);
}
.dark-portal-stage { color: var(--text); }
.hero-badge { border-color: var(--primary-border); background: var(--primary-soft); color: var(--primary); }
.pulse-dot { background: var(--primary); box-shadow: none; }
.hero-copy h1, .cyber-gradient-text { color: var(--ink); background: none; -webkit-text-fill-color: currentColor; }
.hero-actions .button-primary, .button-primary, .button:not(.button-secondary):not(.button-quiet):not(.button-danger) {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--primary-contrast);
}
.release-hash summary, .text-link { color: var(--primary); }
.release-hash code, .terminal-block {
  background: var(--surface-muted);
  color: var(--text);
  border-color: var(--border);
}
.client-preview { box-shadow: var(--shadow-md); }
.preview-platform-label { color: var(--primary); background: var(--primary-soft); border-color: var(--primary-border); }
.preview-platform-label::before { background: var(--primary); }
.quick-steps article span, .platform-icon, .user-chip > span { background: var(--primary); color: var(--primary-contrast); }
.platform-card-windows, .platform-card-linux { border-top-color: var(--primary); }
.platform-icon.terminal { background: var(--surface-muted); color: var(--primary); border-color: var(--border); }
.auth-card { box-shadow: var(--shadow-md); }
.auth-card { position: relative; }
.auth-theme-toggle { position: absolute; top: 16px; right: 16px; }
.auth-card input { background: var(--surface); color: var(--ink); border-color: var(--border-strong); }
.auth-card input:focus { border-color: var(--primary); }
.auth-home-link:hover { color: var(--primary); }
.notice-warning { border-color: var(--warning-border); }
.notice-warning strong { color: var(--warning); }

.sidebar { border-color: var(--border); }
.nav-item { color: var(--text); }
.nav-item svg {
  color: var(--muted);
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.nav-item:hover { color: var(--ink); background: var(--surface-muted); }
.nav-item:hover svg { color: var(--primary); }
.nav-item.active { color: var(--primary); background: var(--primary-soft); border-color: var(--primary-border); }
.nav-item.active::before { background: var(--primary); box-shadow: none; }
.nav-item.active svg { color: var(--primary); }
.sidebar-session { background: var(--surface-muted); border-color: var(--border); }
.status-dot.status-ok { box-shadow: none; }
.sidebar-footer { border-color: var(--border); }
.sidebar-footer .icon-button { color: var(--muted); }
.sidebar-footer .icon-button:hover { color: var(--ink); background: var(--surface-muted); }
.sidebar-footer .icon-button svg,
.topbar .icon-button svg,
.modal-frame .icon-button svg {
  fill: none;
  stroke: currentColor;
}

.tunnel-pulse-card { background: var(--surface); border-color: var(--border); color: var(--text); }
.tunnel-pulse-card::after { display: none; }
.pulse-label { color: var(--primary); }
.health-rail-item { background: var(--surface-muted); }
.data-table tr:hover td { background: var(--surface-hover); }
.status-badge.neutral { background: var(--surface-muted); }
.button-danger { border-color: var(--danger-border); }
.modal::backdrop { background: var(--overlay); backdrop-filter: none; }
.toast { background: var(--surface); color: var(--ink); border: 1px solid var(--border); }
.toast.error { background: var(--danger-soft); color: var(--danger); border-color: var(--danger-border); }
.skeleton { background: var(--surface-muted); animation: none; }

.theme-toggle { flex: 0 0 auto; border-color: var(--border); background: var(--surface); color: var(--muted); }
.theme-toggle:hover { color: var(--primary); background: var(--primary-soft); }
.locale-toggle { min-width: 42px; padding-inline: 10px; font-weight: 700; }
.auth-locale-toggle { position: absolute; top: 16px; right: 64px; }
.theme-icon { width: 19px; height: 19px; }
.theme-icon-sun { display: none; }
:root[data-theme="dark"] .theme-icon-moon { display: none; }
:root[data-theme="dark"] .theme-icon-sun { display: block; }