/* Looking Glass — dark, Apple-inspired, soft ambient shaders */
:root {
  --bg: #0a0a0c;
  --bg-elevated: rgba(20, 20, 22, 0.72);
  --card: rgba(28, 28, 30, 0.62);
  --card-hover: rgba(40, 40, 44, 0.72);
  --border: rgba(255, 255, 255, 0.09);
  --border-strong: rgba(255, 255, 255, 0.14);
  --text: #f5f5f7;
  --text-secondary: #a1a1a6;
  --text-tertiary: #6e6e73;
  --accent: #5e5ce6;
  --accent-2: #bf5af2;
  --accent-soft: rgba(94, 92, 230, 0.18);
  --accent-glow: rgba(94, 92, 230, 0.4);
  --success: #30d158;
  --danger: #ff453a;
  --radius: 18px;
  --radius-sm: 14px;
  --shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
    "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: "SF Mono", ui-monospace, Menlo, Consolas, monospace;
}

[data-brand="k4x"] {
  --accent: #64d2ff;
  --accent-2: #5e5ce6;
  --accent-soft: rgba(100, 210, 255, 0.14);
  --accent-glow: rgba(100, 210, 255, 0.35);
}

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

html {
  color-scheme: dark;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.47;
  position: relative;
  overflow-x: hidden;
}

/* ---------- Ambient background (cheap CSS “shaders”) ---------- */
.fx {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
  background:
    radial-gradient(ellipse 90% 60% at 50% -10%, var(--accent-soft), transparent 55%),
    radial-gradient(ellipse 50% 40% at 0% 80%, rgba(191, 90, 242, 0.08), transparent 50%),
    var(--bg);
}

.fx-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(64px);
  opacity: 0.55;
  will-change: transform;
  transform: translate3d(0, 0, 0);
}

.fx-orb-a {
  width: min(52vw, 420px);
  height: min(52vw, 420px);
  top: -8%;
  left: 15%;
  background: radial-gradient(circle, var(--accent) 0%, transparent 70%);
  animation: drift-a 28s ease-in-out infinite alternate;
}

.fx-orb-b {
  width: min(48vw, 380px);
  height: min(48vw, 380px);
  bottom: 5%;
  right: -5%;
  background: radial-gradient(circle, var(--accent-2) 0%, transparent 70%);
  opacity: 0.35;
  animation: drift-b 34s ease-in-out infinite alternate;
}

.fx-orb-c {
  width: min(36vw, 280px);
  height: min(36vw, 280px);
  top: 42%;
  left: -8%;
  background: radial-gradient(circle, rgba(100, 210, 255, 0.55) 0%, transparent 70%);
  opacity: 0.22;
  animation: drift-c 40s ease-in-out infinite alternate;
}

[data-brand="k4x"] .fx-orb-c {
  background: radial-gradient(circle, rgba(94, 92, 230, 0.55) 0%, transparent 70%);
}

/* Soft film grain — static SVG noise, no canvas */
.fx-grain {
  position: absolute;
  inset: 0;
  opacity: 0.035;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 180px 180px;
}

.fx-vignette {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 75% 70% at 50% 40%, transparent 40%, rgba(0, 0, 0, 0.45) 100%);
}

@keyframes drift-a {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to { transform: translate3d(6%, 10%, 0) scale(1.08); }
}

@keyframes drift-b {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to { transform: translate3d(-8%, -6%, 0) scale(1.12); }
}

@keyframes drift-c {
  from { transform: translate3d(0, 0, 0); }
  to { transform: translate3d(12%, -8%, 0); }
}

@media (prefers-reduced-motion: reduce) {
  .fx-orb {
    animation: none !important;
  }
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: opacity 0.15s ease;
}
a:hover {
  opacity: 0.85;
}

.wrap {
  position: relative;
  z-index: 1;
  width: min(960px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 2.5rem 0 4rem;
}

/* Header */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 2.25rem;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.brand h1 {
  font-size: clamp(1.45rem, 3.2vw, 1.9rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.15;
  background: linear-gradient(135deg, #fff 0%, rgba(255, 255, 255, 0.78) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.brand .sub {
  font-size: 0.8125rem;
  color: var(--text-tertiary);
  font-weight: 400;
}

.nav {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.nav a {
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.5rem 0.9rem;
  border-radius: 980px;
  background: transparent;
  border: 1px solid transparent;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.nav a:hover,
.nav a.active {
  color: var(--text);
  background: var(--card);
  border-color: var(--border);
  opacity: 1;
}

/* Cards — frosted glass */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 1.75rem;
  box-shadow: var(--shadow);
}

.card.glass {
  backdrop-filter: blur(24px) saturate(140%);
  -webkit-backdrop-filter: blur(24px) saturate(140%);
  background:
    linear-gradient(
      145deg,
      rgba(255, 255, 255, 0.06) 0%,
      rgba(255, 255, 255, 0.02) 40%,
      rgba(255, 255, 255, 0.01) 100%
    ),
    var(--card);
  box-shadow:
    var(--shadow),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.card + .card {
  margin-top: 1rem;
}

.card h2 {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-tertiary);
  margin-bottom: 1.25rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

@media (max-width: 720px) {
  .grid-2 {
    grid-template-columns: 1fr;
  }
}

/* Info rows */
.info-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.info-row {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.info-row .label {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  font-weight: 500;
}

.info-row .value {
  font-size: 1.125rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
}

.info-row .value.mono {
  font-family: var(--mono);
  font-size: 1rem;
}

.info-row .value.muted {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 0.25rem 0.65rem;
  border-radius: 980px;
  width: fit-content;
  border: 1px solid rgba(255, 255, 255, 0.04);
  box-shadow: 0 0 20px var(--accent-soft);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 560;
  letter-spacing: -0.01em;
  border: none;
  border-radius: 980px;
  padding: 0.75rem 1.5rem;
  cursor: pointer;
  transition: transform 0.12s ease, opacity 0.15s ease, box-shadow 0.2s ease;
  text-decoration: none;
  color: #fff;
  background: linear-gradient(180deg, color-mix(in srgb, var(--accent) 92%, #fff) 0%, var(--accent) 100%);
  box-shadow:
    0 2px 16px var(--accent-glow),
    inset 0 1px 0 rgba(255, 255, 255, 0.2);
}
.btn:hover {
  opacity: 0.94;
  color: #fff;
  box-shadow:
    0 4px 24px var(--accent-glow),
    inset 0 1px 0 rgba(255, 255, 255, 0.25);
}
.btn:active {
  transform: scale(0.98);
}
.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
}
.btn-secondary {
  background: rgba(44, 44, 46, 0.9);
  color: var(--text);
  box-shadow: none;
  border: 1px solid var(--border-strong);
}
.btn-secondary:hover {
  color: var(--text);
  background: #2c2c2e;
  box-shadow: none;
}
.btn-lg {
  padding: 0.9rem 2rem;
  font-size: 1rem;
}
.btn-block {
  width: 100%;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

/* File downloads */
.file-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.75rem;
}

.file-link {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.2rem;
  padding: 1rem 1.1rem;
  background: rgba(10, 10, 12, 0.45);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  transition: border-color 0.2s, background 0.2s, box-shadow 0.2s, transform 0.15s;
}
.file-link:hover {
  opacity: 1;
  border-color: color-mix(in srgb, var(--accent) 50%, var(--border));
  background: rgba(28, 28, 30, 0.7);
  box-shadow: 0 0 24px var(--accent-soft);
  transform: translateY(-1px);
}
.file-link strong {
  font-size: 1rem;
  font-weight: 600;
}
.file-link span {
  font-size: 0.75rem;
  color: var(--text-tertiary);
}

/* Speedtest */
.metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
}

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

.metric {
  background: rgba(10, 10, 12, 0.4);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1.25rem 1rem;
  text-align: center;
  transition: border-color 0.25s, box-shadow 0.25s;
}

.metric.live {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
  box-shadow: 0 0 28px var(--accent-soft);
}

.metric .m-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-tertiary);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.metric .m-value {
  font-size: clamp(1.6rem, 4vw, 2.25rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
}

.metric.live .m-value {
  color: var(--accent);
}

.metric .m-unit {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 500;
  margin-top: 0.25rem;
}

.sub-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.75rem;
  margin-top: 1rem;
}

.sub-metric {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1rem;
}

.sub-metric .sm-label {
  font-size: 0.7rem;
  color: var(--text-tertiary);
  margin-bottom: 0.3rem;
}

.sub-metric .sm-value {
  font-size: 1.05rem;
  font-weight: 560;
  font-variant-numeric: tabular-nums;
}

.unit-sm {
  color: var(--text-tertiary);
  font-weight: 400;
  font-size: 0.85rem;
}

.status-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin: 1.25rem 0 0.5rem;
  min-height: 1.5rem;
}

.status-text {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.progress {
  height: 4px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 4px;
  overflow: hidden;
  margin-top: 0.75rem;
}

.progress > i {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  border-radius: 4px;
  transition: width 0.2s ease;
  box-shadow: 0 0 12px var(--accent-glow);
}

.gauge-row {
  display: flex;
  justify-content: center;
  margin: 1.5rem 0 0.5rem;
}

.gauge {
  width: min(220px, 60vw);
  height: min(220px, 60vw);
  border-radius: 50%;
  background:
    radial-gradient(circle at 50% 50%, rgba(28, 28, 30, 0.95) 58%, transparent 59%),
    conic-gradient(var(--accent) var(--p, 0%), rgba(255, 255, 255, 0.08) 0);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  box-shadow:
    0 0 40px var(--accent-soft),
    inset 0 0 0 1px rgba(255, 255, 255, 0.04);
  transition: box-shadow 0.3s ease;
}

.gauge-inner {
  text-align: center;
}

.gauge-inner .g-val {
  font-size: 2rem;
  font-weight: 600;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
}

.gauge-inner .g-unit {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.result-banner {
  margin-top: 1.25rem;
  padding: 0.9rem 1.1rem;
  border-radius: var(--radius-sm);
  background: var(--accent-soft);
  border: 1px solid color-mix(in srgb, var(--accent) 25%, transparent);
  text-align: center;
}

.result-banner p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* Admin table */
.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1rem;
  align-items: center;
}

.input {
  font-family: inherit;
  font-size: 0.875rem;
  color: var(--text);
  background: rgba(10, 10, 12, 0.5);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.55rem 0.85rem;
  outline: none;
  min-width: 160px;
}
.input:focus {
  border-color: var(--accent);
}

.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.stat-box {
  background: rgba(10, 10, 12, 0.4);
  border-radius: var(--radius-sm);
  padding: 0.9rem 1rem;
  border: 1px solid var(--border);
}
.stat-box .s-label {
  font-size: 0.7rem;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.stat-box .s-val {
  font-size: 1.25rem;
  font-weight: 600;
  margin-top: 0.2rem;
  font-variant-numeric: tabular-nums;
}

.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8125rem;
}

th,
td {
  text-align: left;
  padding: 0.7rem 0.85rem;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

th {
  color: var(--text-tertiary);
  font-weight: 600;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: rgba(10, 10, 12, 0.5);
  position: sticky;
  top: 0;
}

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

tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

.mono-sm {
  font-family: var(--mono);
  font-size: 0.78rem;
}

.pagination {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  justify-content: flex-end;
  margin-top: 1rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.footer {
  margin-top: 3rem;
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-tertiary);
}

.skeleton {
  background: linear-gradient(
    90deg,
    rgba(28, 28, 30, 0.8) 25%,
    rgba(50, 50, 54, 0.9) 50%,
    rgba(28, 28, 30, 0.8) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.2s infinite;
  border-radius: 6px;
  color: transparent !important;
  min-height: 1.2em;
}

@keyframes shimmer {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

.hidden {
  display: none !important;
}