:root {
  --bg: #0f172a;
  --bg-soft: #020617;
  --card: #0b1220;
  --card-soft: #020617;
  --accent: #38bdf8;
  --accent-strong: #0ea5e9;
  --accent-soft: rgba(56, 189, 248, 0.12);
  --text-main: #e5e7eb;
  --text-muted: #9ca3af;
  --border-subtle: rgba(148, 163, 184, 0.35);
  --danger: #ef4444;
  --success: #22c55e;
  --warning: #facc15;
  --shadow-soft: 0 24px 60px rgba(15, 23, 42, 0.75);
  --radius-xl: 1.5rem;
  --radius-lg: 1rem;
  --radius-pill: 999px;
  --transition-fast: 150ms ease-out;
  --transition-med: 220ms ease-out;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top, #1e293b 0, #020617 50%, #020617 100%);
  color: var(--text-main);
  min-height: 100vh;
}

body {
  display: flex;
  justify-content: center;
}

.page-shell {
  width: 100%;
  max-width: 1120px;
  padding: 1.5rem 1rem 2.75rem;
}

@media (min-width: 768px) {
  .page-shell {
    padding: 2.5rem 1.5rem 3.5rem;
  }
}

/* Header */

header.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.75rem;
}

/* Mobile: stack logo/slogan and badge vertically */
@media (max-width: 640px) {
  header.site-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .header-badge {
    align-self: stretch;
    justify-content: flex-start;
    white-space: normal;
    line-height: 1.4;
  }
}

/* Brand + logo */

.brand {
  display: flex;
  align-items: center;
  gap: 0.9rem;
}

.brand-logo {
  display: flex;
  align-items: center;
}

.brand-logo img {
  display: block;
  height: 40px;
  width: auto;
}

@media (min-width: 640px) {
  .brand-logo img {
    height: 46px;
  }
}

.brand-text-primary {
  font-size: 1.1rem;
  font-weight: 650;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.brand-text-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Header badge */

.header-badge {
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(148, 163, 184, 0.45);
  background: linear-gradient(120deg, rgba(15, 23, 42, 0.85), rgba(15, 23, 42, 0.3));
  font-size: 0.75rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.45rem;
  white-space: nowrap;
}

.header-badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: #22c55e;
  box-shadow: 0 0 0 6px rgba(34, 197, 94, 0.25);
}

/* Layout */

main {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr);
  gap: 1.25rem;
}

@media (min-width: 900px) {
  .hero {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 1.75rem;
    align-items: center;
  }
}

/* Hero copy */

.hero-copy h1 {
  font-size: clamp(1.9rem, 2.8vw + 1rem, 2.6rem);
  margin: 0 0 0.65rem;
  letter-spacing: 0.02em;
}

.hero-copy h1 span.accent {
  background: linear-gradient(120deg, #7dd3fc, #e0f2fe);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-lead {
  margin: 0 0 0.85rem;
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text-muted);
}

.hero-sub {
  margin: 0;
  font-size: 0.8rem;
  color: rgba(148, 163, 184, 0.75);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.1rem;
  align-items: center;
}

.hero-sub span.badge-mini {
  padding: 0.15rem 0.65rem;
  border-radius: 999px;
  font-size: 0.75rem;
  border: 1px solid rgba(148, 163, 184, 0.4);
  background: rgba(15, 23, 42, 0.75);
}

/* IP info line */

.ip-info {
  margin: 0.6rem 0 0;
  font-size: 0.78rem;
  color: rgba(148, 163, 184, 0.9);
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  align-items: center;
}

.ip-info .ip-value {
  font-family: "SF Mono", ui-monospace, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 0.78rem;
  color: #e5e7eb;
}

.ip-info .ip-separator {
  opacity: 0.7;
}

@media (max-width: 480px) {
  .ip-info {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.2rem;
  }

  .ip-info .ip-separator {
    display: none;
  }
}

/* Hero card / gauge */

.hero-card {
  border-radius: var(--radius-xl);
  border: 1px solid rgba(148, 163, 184, 0.4);
  background: radial-gradient(circle at top left, rgba(56, 189, 248, 0.3) 0, rgba(15, 23, 42, 0.1) 35%, #020617 100%);
  padding: 1.15rem 1rem;
  box-shadow: var(--shadow-soft);
  position: relative;
  overflow: hidden;
}

@media (min-width: 768px) {
  .hero-card {
    padding: 1.4rem 1.4rem 1.3rem;
  }
}

.hero-card::before {
  content: "";
  position: absolute;
  inset: -40%;
  background: radial-gradient(circle at 0 0, rgba(56, 189, 248, 0.14), transparent 55%);
  opacity: 0.9;
  pointer-events: none;
}

.hero-card-inner {
  position: relative;
  z-index: 1;
}

.gauge-ring {
  width: 130px;
  height: 130px;
  border-radius: 50%;
  background: conic-gradient(from 210deg, rgba(248, 250, 252, 0.05) 0, rgba(56, 189, 248, 0.12) 40%, rgba(34, 197, 94, 0.24) 75%, rgba(248, 250, 252, 0.08) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 0.8rem;
  box-shadow: 0 0 0 1px rgba(148, 163, 184, 0.45), 0 18px 40px rgba(8, 47, 73, 0.65);
}

.gauge-core {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 0, rgba(248, 250, 252, 0.26) 0, rgba(15, 23, 42, 0.1) 45%, #020617 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(148, 163, 184, 0.55);
}

.gauge-value {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.gauge-unit {
  font-size: 0.7rem;
  text-transform: uppercase;
  color: rgba(156, 163, 175, 0.9);
  letter-spacing: 0.14em;
  text-align: center;
  width: 100%;
  display: block;
  margin-top: 2px;
}

.gauge-caption {
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

/* Hero mini metrics */

.hero-metrics-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  margin-bottom: 0.95rem;
}

.mini-metric {
  border-radius: 1rem;
  border: 1px solid rgba(148, 163, 184, 0.45);
  padding: 0.55rem 0.55rem 0.5rem;
  background: rgba(15, 23, 42, 0.75);
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.mini-metric-label {
  font-size: 0.7rem;
  color: var(--text-muted);
}

.mini-metric-value {
  font-size: 0.9rem;
  font-weight: 600;
}

.mini-metric-unit {
  font-size: 0.7rem;
  color: rgba(156, 163, 175, 0.9);
}

/* CTA + status */

.primary-cta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.btn-primary {
  appearance: none;
  border: none;
  outline: none;
  border-radius: var(--radius-pill);
  padding: 0.6rem 1.4rem;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
  color: #0b1120;
  background: radial-gradient(circle at top left, #e0f2fe 0, #38bdf8 40%, #0369a1 100%);
  box-shadow: 0 18px 40px rgba(8, 47, 73, 0.8);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), filter var(--transition-fast);
  white-space: nowrap;
}

.btn-primary span.pulse-dot {
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: #22c55e;
}

.btn-primary:hover {
  transform: translateY(-1px);
  filter: brightness(1.04);
  box-shadow: 0 22px 50px rgba(8, 47, 73, 0.95);
}

.btn-primary:active {
  transform: translateY(0px) scale(0.99);
  box-shadow: 0 16px 30px rgba(8, 47, 73, 0.8);
}

/* Secondary button (browser leak test) */

.btn-secondary {
  appearance: none;
  border-radius: var(--radius-pill);
  padding: 0.4rem 0.9rem;
  font-size: 0.78rem;
  font-weight: 500;
  border: 1px solid rgba(148, 163, 184, 0.7);
  background: rgba(15, 23, 42, 0.9);
  color: rgba(226, 232, 240, 0.95);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

.btn-secondary:hover {
  background: rgba(30, 64, 175, 0.6);
  border-color: rgba(129, 140, 248, 0.9);
  transform: translateY(-0.5px);
}

.btn-secondary:disabled {
  opacity: 0.6;
  cursor: default;
  transform: none;
}

/* Status pill */

.status-pill {
  font-size: 0.75rem;
  color: rgba(156, 163, 175, 0.9);
  padding: 0.35rem 0.9rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(148, 163, 184, 0.5);
  background: rgba(15, 23, 42, 0.85);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  max-width: 100%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.9);
}

.status-pill.testing .status-dot {
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(56, 189, 248, 0.3);
}

.status-pill.error .status-dot {
  background: var(--danger);
  box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.3);
}

.status-pill.ready .status-dot {
  background: var(--success);
  box-shadow: 0 0 0 4px rgba(34, 197, 94, 0.25);
}

/* Tester layout */

.tester-layout {
  display: grid;
  grid-template-columns: minmax(0, 3fr);
  gap: 1.25rem;
  margin-top: 0.4rem;
}

@media (min-width: 980px) {
  .tester-layout {
    grid-template-columns: minmax(0, 3.5fr) minmax(0, 2.2fr);
    gap: 1.5rem;
  }
}

.tester-card {
  border-radius: var(--radius-xl);
  border: 1px solid rgba(148, 163, 184, 0.45);
  background: radial-gradient(circle at top left, rgba(17, 24, 39, 0.4) 0, rgba(15, 23, 42, 0.9) 40%, #020617 100%);
  padding: 1.1rem 1rem 1.2rem;
  box-shadow: var(--shadow-soft);
}

@media (min-width: 768px) {
  .tester-card {
    padding: 1.25rem 1.25rem 1.35rem;
  }
}

.tester-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.tester-title {
  font-size: 0.95rem;
  font-weight: 600;
}

.tester-subtitle {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Metrics grid */

.results-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  margin-bottom: 0.95rem;
}

@media (max-width: 480px) {
  .results-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.metric-card {
  border-radius: 1rem;
  border: 1px solid rgba(148, 163, 184, 0.55);
  background: radial-gradient(circle at top, rgba(15, 23, 42, 0.9) 0, rgba(15, 23, 42, 0.85) 40%, rgba(15, 23, 42, 0.95) 100%);
  padding: 0.6rem 0.65rem 0.55rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.metric-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.metric-chip {
  font-size: 0.7rem;
  padding: 0.1rem 0.45rem;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.7);
}

.metric-main-row {
  display: flex;
  align-items: baseline;
  gap: 0.25rem;
}

.metric-value {
  font-size: 1.2rem;
  font-weight: 650;
  letter-spacing: 0.02em;
}

.metric-unit {
  font-size: 0.75rem;
  color: rgba(156, 163, 175, 0.9);
}

.metric-footnote {
  font-size: 0.7rem;
  color: rgba(148, 163, 184, 0.85);
}

.metric-card.metric-download {
  border-color: rgba(56, 189, 248, 0.9);
  background: radial-gradient(circle at top, rgba(15, 23, 42, 0.85) 0, rgba(8, 47, 73, 0.7) 40%, rgba(15, 23, 42, 0.98) 100%);
  box-shadow: 0 18px 40px rgba(8, 47, 73, 0.85);
}

.metric-card.metric-download .metric-value {
  color: #e0f2fe;
}

.metric-card.metric-ping .metric-value {
  color: #bbf7d0;
}

.metric-card.metric-jitter .metric-value {
  color: #fee2e2;
}

/* Tester hint + quality panel */

.tester-actions-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 0.75rem;
}

.tester-hint {
  font-size: 0.75rem;
  color: rgba(148, 163, 184, 0.85);
}

.quality-panel {
  border-radius: 1rem;
  border: 1px solid rgba(148, 163, 184, 0.5);
  background: rgba(15, 23, 42, 0.9);
  padding: 0.6rem 0.7rem;
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(0, 1.5fr);
  gap: 0.7rem;
  align-items: center;
}

@media (max-width: 640px) {
  .quality-panel {
    grid-template-columns: minmax(0, 1fr);
  }
}

.quality-title {
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 0.1rem;
}

.quality-text {
  font-size: 0.72rem;
  color: rgba(148, 163, 184, 0.95);
}

.quality-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  justify-content: flex-end;
}

.quality-chip {
  font-size: 0.7rem;
  padding: 0.25rem 0.55rem;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.85);
  background: rgba(15, 23, 42, 0.95);
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.quality-chip-dot {
  width: 6px;
  height: 6px;
  border-radius: 999px;
}

.quality-chip-dot.good {
  background: var(--success);
}

.quality-chip-dot.ok {
  background: var(--warning);
}

.quality-chip-dot.bad {
  background: var(--danger);
}

/* Ad layout */

.ad-column {
  border-radius: var(--radius-xl);
  border: 1px dashed rgba(148, 163, 184, 0.45);
  background: linear-gradient(150deg, rgba(15, 23, 42, 0.85), rgba(15, 23, 42, 0.7));
  padding: 0.8rem 0.75rem 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  min-height: 110px;
}

@media (min-width: 980px) {
  .ad-column {
    padding: 0.95rem 0.9rem 1rem;
  }
}

.ad-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: rgba(148, 163, 184, 0.9);
}

.ad-slot {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.9rem;
  background: rgba(15, 23, 42, 0.9);
  border: 1px dashed rgba(148, 163, 184, 0.6);
  font-size: 0.7rem;
  color: rgba(148, 163, 184, 0.9);
  text-align: center;
  padding: 0.65rem;
}

.ad-slot.small {
  min-height: 80px;
}

/* Info section */

.info-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.9rem;
  margin-top: 0.4rem;
}

@media (min-width: 880px) {
  .info-grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1.3fr);
  }
}

.info-card {
  border-radius: var(--radius-xl);
  border: 1px solid rgba(148, 163, 184, 0.35);
  background: radial-gradient(circle at top left, rgba(15, 23, 42, 0.9) 0, #020617 35%, #020617 100%);
  padding: 0.9rem 0.9rem 1rem;
}

.info-title {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
}

.info-body {
  font-size: 0.8rem;
  color: rgba(156, 163, 175, 0.98);
  line-height: 1.6;
}

.info-list {
  list-style: none;
  padding-left: 0;
  margin: 0.4rem 0 0;
  font-size: 0.8rem;
  color: rgba(156, 163, 175, 0.98);
}

.info-list li {
  margin-bottom: 0.2rem;
  display: flex;
  gap: 0.45rem;
}

.info-list li::before {
  content: "•";
  color: rgba(56, 189, 248, 0.95);
  margin-top: 0.03rem;
}

/* IP checker card */

.ip-checker-section {
  margin-top: 0.4rem;
}

.ip-card .info-body {
  margin-bottom: 0.6rem;
}

.ip-detail-list {
  margin: 0 0 0.6rem;
  padding: 0;
}

.ip-row {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.25rem;
  font-size: 0.8rem;
}

.ip-row dt {
  font-weight: 600;
  color: rgba(209, 213, 219, 0.95);
}

.ip-row dd {
  margin: 0;
  text-align: right;
  color: rgba(209, 213, 219, 0.9);
  font-family: "SF Mono", ui-monospace, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  word-break: break-all;
}

@media (max-width: 540px) {
  .ip-row {
    flex-direction: column;
    align-items: flex-start;
  }
  .ip-row dd {
    text-align: left;
  }
}

.ip-note {
  font-size: 0.75rem;
  color: rgba(148, 163, 184, 0.9);
}

/* Browser leak card */

.browser-leak-section {
  margin-top: 0.4rem;
}

.leak-detail-list {
  margin: 0 0 0.7rem;
  padding: 0;
}

.leak-row {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.25rem;
  font-size: 0.8rem;
}

.leak-row dt {
  font-weight: 600;
  color: rgba(209, 213, 219, 0.95);
}

.leak-row dd {
  margin: 0;
  text-align: right;
  color: rgba(209, 213, 219, 0.9);
  font-family: "SF Mono", ui-monospace, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  word-break: break-word;
}

@media (max-width: 540px) {
  .leak-row {
    flex-direction: column;
    align-items: flex-start;
  }
  .leak-row dd {
    text-align: left;
  }
}

.leak-webrtc-block {
  border-radius: 1rem;
  border: 1px solid rgba(148, 163, 184, 0.5);
  background: rgba(15, 23, 42, 0.9);
  padding: 0.65rem 0.7rem 0.7rem;
  margin-top: 0.35rem;
}

.leak-webrtc-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.35rem;
}

.leak-webrtc-title {
  font-size: 0.8rem;
  font-weight: 600;
}

.leak-status {
  font-size: 0.75rem;
  color: rgba(148, 163, 184, 0.95);
  margin: 0 0 0.35rem;
}

.leak-result {
  font-size: 0.8rem;
  margin: 0 0 0.3rem;
}

.leak-result.safe {
  color: #bbf7d0;
}

.leak-result.warning {
  color: #fed7aa;
}

.leak-result.danger {
  color: #fecaca;
}

.leak-local-ips {
  font-size: 0.75rem;
  color: rgba(148, 163, 184, 0.95);
  word-break: break-all;
}

/* Footer */

footer.site-footer {
  margin-top: 2rem;
  font-size: 0.72rem;
  color: rgba(148, 163, 184, 0.9);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem;
  border-top: 1px solid rgba(31, 41, 55, 0.9);
  padding-top: 0.9rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.footer-links a {
  color: rgba(148, 163, 184, 0.9);
  text-decoration: none;
}

.footer-links a:hover {
  text-decoration: underline;
}