/* ============================================================
   SpeedCheck Pro — style.css
   Aesthetic: Refined dark-tech with electric accents
   Fonts: Syne (display) + JetBrains Mono (data)
   ============================================================ */

/* ── Variables ── */
:root {
  --bg:        #0a0f1e;
  --bg2:       #0d1428;
  --bg3:       #111827;
  --surface:   rgba(255,255,255,0.04);
  --surface2:  rgba(255,255,255,0.07);
  --border:    rgba(255,255,255,0.08);
  --border2:   rgba(255,255,255,0.14);
  --text:      #e8edf5;
  --text2:     #8b95a8;
  --text3:     #5a6478;
  --accent:    #00d4ff;
  --accent2:   #0091ff;
  --green:     #00e5a0;
  --yellow:    #ffd166;
  --red:       #ff4f6d;
  --orange:    #ff8c42;
  --grad1:     linear-gradient(135deg, #00d4ff, #0091ff);
  --grad2:     linear-gradient(135deg, #00e5a0, #0091ff);
  --shadow:    0 8px 32px rgba(0,0,0,0.4);
  --shadow2:   0 2px 8px rgba(0,0,0,0.3);
  --radius:    16px;
  --radius-sm: 10px;
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
}

[data-theme="light"] {
  --bg:        #f0f4fb;
  --bg2:       #e4eaf5;
  --bg3:       #ffffff;
  --surface:   rgba(0,0,0,0.04);
  --surface2:  rgba(0,0,0,0.06);
  --border:    rgba(0,0,0,0.08);
  --border2:   rgba(0,0,0,0.14);
  --text:      #1a2035;
  --text2:     #4a5568;
  --text3:     #8896aa;
  --shadow:    0 8px 32px rgba(0,100,200,0.1);
  --shadow2:   0 2px 8px rgba(0,0,0,0.08);
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'Syne', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  transition: background var(--transition), color var(--transition);
}
a { color: var(--accent); text-decoration: none; }
a:hover { opacity: 0.8; }
button { cursor: pointer; font-family: inherit; border: none; background: none; }
img { max-width: 100%; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg2); }
::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 3px; }

/* ── Layout ── */
.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-title {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 8px;
}
.section-subtitle { color: var(--text2); margin-bottom: 40px; font-size: 1rem; }
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
  gap: 16px;
  flex-wrap: wrap;
}

/* ── Navbar ── */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 14px 0;
  background: rgba(10,15,30,0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}
[data-theme="light"] .navbar {
  background: rgba(240,244,251,0.88);
}
.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.02em;
}
.nav-logo em { color: var(--accent); font-style: normal; }
.logo-icon { font-size: 1.3rem; }
.nav-actions { display: flex; align-items: center; gap: 8px; }
.btn-nav {
  padding: 7px 16px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text2);
  background: var(--surface);
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.btn-nav:hover { color: var(--text); background: var(--surface2); border-color: var(--border2); }
.btn-theme {
  width: 36px; height: 36px;
  border-radius: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  font-size: 1rem;
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition);
}
.btn-theme:hover { background: var(--surface2); }

/* ── Hero / Speed Test ── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 100px 24px 60px;
  overflow: hidden;
}

/* Background orbs */
.hero-bg { position: absolute; inset: 0; pointer-events: none; z-index: 0; }
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.15;
  animation: float 8s ease-in-out infinite;
}
.orb-1 { width: 500px; height: 500px; background: radial-gradient(circle, #00d4ff, transparent 70%); top: -100px; left: -100px; animation-delay: 0s; }
.orb-2 { width: 400px; height: 400px; background: radial-gradient(circle, #0091ff, transparent 70%); bottom: -80px; right: -80px; animation-delay: -3s; }
.orb-3 { width: 300px; height: 300px; background: radial-gradient(circle, #00e5a0, transparent 70%); top: 50%; left: 50%; transform: translate(-50%,-50%); animation-delay: -6s; }
.grid-lines {
  position: absolute; inset: 0;
  background-image: linear-gradient(var(--border) 1px, transparent 1px), linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.3;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, black, transparent);
}
[data-theme="light"] .grid-lines { opacity: 0.15; }
[data-theme="light"] .orb { opacity: 0.08; }

@keyframes float {
  0%,100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-20px) scale(1.05); }
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  width: 100%;
  max-width: 680px;
}
.hero-title {
  display: flex;
  flex-direction: column;
  font-size: clamp(2rem, 6vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.1;
}
.title-line { color: var(--text); }
.title-accent {
  background: var(--grad1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-subtitle { font-size: 1.05rem; color: var(--text2); font-weight: 400; margin-top: -12px; }

/* ── Gauge ── */
.gauge-wrapper {
  width: 100%;
  max-width: 380px;
  position: relative;
}
.gauge-container {
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.gauge-svg {
  width: 100%;
  max-width: 340px;
  overflow: visible;
  filter: drop-shadow(0 0 20px rgba(0,212,255,0.15));
  transition: filter 0.5s;
}
.gauge-svg.active { filter: drop-shadow(0 0 30px rgba(0,212,255,0.4)); }

.gauge-bg { stroke: var(--surface2); }
.gauge-fill {
  stroke: url(#gaugeGradient);
  transition: stroke-dashoffset 0.15s ease-out, stroke 0.5s;
}

/* Inject SVG gradient via JS — fallback here */
.gauge-fill { stroke: #00d4ff; }

.gauge-center {
  position: absolute;
  top: 56%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  pointer-events: none;
}
.speed-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: clamp(3rem, 10vw, 5rem);
  font-weight: 600;
  line-height: 1;
  color: var(--text);
  transition: color 0.3s;
  letter-spacing: -0.04em;
}
.speed-unit {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.95rem;
  color: var(--text2);
  font-weight: 400;
  letter-spacing: 0.05em;
  margin-top: 4px;
}
.speed-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-top: 6px;
  min-height: 1.2em;
}

.gauge-scale {
  display: flex;
  justify-content: space-between;
  width: 88%;
  margin-top: -4px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.65rem;
  color: var(--text3);
  padding: 0 4px;
}

/* ── Mini Stats ── */
.mini-stats {
  display: flex;
  align-items: center;
  gap: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 0;
  width: 100%;
  max-width: 480px;
  backdrop-filter: blur(10px);
}
.mini-stat {
  flex: 1;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.mini-label {
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text3);
}
.mini-val {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text);
  transition: color 0.3s;
  min-width: 2ch;
}
.mini-unit {
  font-size: 0.65rem;
  color: var(--text3);
  font-family: 'JetBrains Mono', monospace;
}
.mini-divider {
  width: 1px;
  height: 36px;
  background: var(--border);
  flex-shrink: 0;
}

/* ── Phase Indicator ── */
.phase-indicator {
  display: flex;
  align-items: center;
  gap: 0;
}
.phase-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  opacity: 0.35;
  transition: opacity var(--transition);
}
.phase-step.active { opacity: 1; }
.phase-step.done { opacity: 0.7; }
.phase-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--text3);
  transition: background var(--transition), box-shadow var(--transition);
}
.phase-step.active .phase-dot {
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
  animation: pulseDot 1s ease-in-out infinite;
}
.phase-step.done .phase-dot { background: var(--green); }
.phase-name {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text2);
}
.phase-step.active .phase-name { color: var(--accent); }
.phase-step.done .phase-name { color: var(--green); }
.phase-line {
  width: 60px; height: 1px;
  background: var(--border);
  margin: 0 8px;
  margin-bottom: 20px;
}

@keyframes pulseDot {
  0%,100% { box-shadow: 0 0 6px var(--accent); }
  50% { box-shadow: 0 0 18px var(--accent); }
}

/* ── Start Button ── */
.btn-start {
  width: 100px; height: 100px;
  border-radius: 50%;
  background: var(--grad1);
  box-shadow: 0 0 0 8px rgba(0,212,255,0.1), 0 8px 40px rgba(0,212,255,0.3);
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}
.btn-start:hover {
  transform: scale(1.06);
  box-shadow: 0 0 0 12px rgba(0,212,255,0.15), 0 12px 50px rgba(0,212,255,0.45);
}
.btn-start:active { transform: scale(0.96); }
.btn-start.running {
  background: linear-gradient(135deg, var(--red), #cc1f3a);
  box-shadow: 0 0 0 8px rgba(255,79,109,0.1), 0 8px 40px rgba(255,79,109,0.3);
}
.btn-start-inner {
  display: flex; align-items: center; justify-content: center;
  width: 100%; height: 100%;
  border-radius: 50%;
  position: relative;
}
.btn-start-text {
  font-size: 1.3rem;
  font-weight: 800;
  color: white;
  letter-spacing: 0.08em;
  z-index: 1;
  transition: all 0.2s;
}
.btn-start-ripple {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: rgba(255,255,255,0.2);
  transform: scale(0);
  opacity: 0;
}
.btn-start.running .btn-start-ripple {
  animation: ripple 2s ease-out infinite;
}
@keyframes ripple {
  0% { transform: scale(0.5); opacity: 0.6; }
  100% { transform: scale(2.5); opacity: 0; }
}

.server-info {
  font-size: 0.8rem;
  color: var(--text3);
  font-family: 'JetBrains Mono', monospace;
  min-height: 1.5em;
}

/* ── Results Section ── */
.results-section { background: var(--bg2); }
.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}
.result-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 20px 16px;
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition), transform var(--transition);
  backdrop-filter: blur(10px);
}
.result-card:hover { border-color: var(--border2); transform: translateY(-2px); }
.result-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  border-radius: var(--radius) var(--radius) 0 0;
}
.card-download::before { background: var(--grad1); }
.card-upload::before { background: linear-gradient(90deg, var(--green), #00a87a); }
.card-ping::before { background: linear-gradient(90deg, var(--yellow), var(--orange)); }
.card-jitter::before { background: linear-gradient(90deg, var(--orange), var(--red)); }

.result-icon {
  font-size: 1.4rem;
  font-weight: 900;
  margin-bottom: 10px;
  opacity: 0.6;
}
.card-download .result-icon { color: var(--accent); }
.card-upload .result-icon { color: var(--green); }
.card-ping .result-icon { color: var(--yellow); }
.card-jitter .result-icon { color: var(--orange); }

.result-label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text2);
  margin-bottom: 6px;
}
.result-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 2.4rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 4px;
}
.result-unit {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--text3);
}
.result-bar-wrap {
  margin-top: 16px;
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
}
.result-bar {
  height: 100%;
  border-radius: 2px;
  width: 0%;
  transition: width 1s cubic-bezier(0.4,0,0.2,1);
}
.card-download .result-bar { background: var(--grad1); }
.card-upload .result-bar { background: linear-gradient(90deg, var(--green), #00a87a); }
.card-ping .result-bar { background: linear-gradient(90deg, var(--green), var(--yellow)); }
.card-jitter .result-bar { background: linear-gradient(90deg, var(--yellow), var(--red)); }

/* ── Quality Banner ── */
.quality-banner {
  display: flex;
  align-items: center;
  gap: 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-bottom: 24px;
  backdrop-filter: blur(10px);
}
.quality-icon { font-size: 2rem; flex-shrink: 0; }
.quality-body { flex: 1; }
.quality-title { font-size: 1.1rem; font-weight: 700; margin-bottom: 4px; }
.quality-desc { font-size: 0.85rem; color: var(--text2); }
.quality-badge {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.8rem;
  font-weight: 700;
  padding: 8px 16px;
  border-radius: 10px;
  background: var(--surface2);
  border: 1px solid var(--border2);
  flex-shrink: 0;
}

/* ── Stats Row ── */
.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 12px;
}
.stat-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  backdrop-filter: blur(10px);
}
.stat-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text3);
  margin-bottom: 6px;
}
.stat-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.8rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.02em;
}
.stat-unit {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  color: var(--text3);
}

/* ── Analysis Section ── */
.analysis-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}
.analysis-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
  backdrop-filter: blur(10px);
  transition: border-color var(--transition), transform var(--transition);
}
.analysis-card:hover { border-color: var(--border2); transform: translateY(-2px); }
.analysis-emoji { font-size: 2rem; flex-shrink: 0; }
.analysis-body { flex: 1; }
.analysis-title {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 6px;
}
.analysis-status {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 8px;
  padding: 3px 10px;
  border-radius: 20px;
  display: inline-block;
}
.status-excellent { background: rgba(0,229,160,0.15); color: var(--green); }
.status-good { background: rgba(0,212,255,0.15); color: var(--accent); }
.status-fair { background: rgba(255,209,102,0.15); color: var(--yellow); }
.status-poor { background: rgba(255,79,109,0.15); color: var(--red); }
.analysis-desc { font-size: 0.8rem; color: var(--text2); line-height: 1.5; }

/* ── Chart ── */
.chart-wrapper {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 24px;
  backdrop-filter: blur(10px);
  height: 240px;
  position: relative;
}
#speedChart { width: 100% !important; height: 100% !important; }

/* ── History ── */
.history-empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--text2);
}
.empty-icon { font-size: 3rem; margin-bottom: 16px; opacity: 0.5; }

.history-table-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: auto;
  backdrop-filter: blur(10px);
}
.history-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}
.history-table th {
  padding: 14px 16px;
  text-align: left;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text3);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.history-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  font-family: 'JetBrains Mono', monospace;
  color: var(--text);
  white-space: nowrap;
}
.history-table tbody tr:last-child td { border-bottom: none; }
.history-table tbody tr:hover td { background: var(--surface2); }

.grade-badge {
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 6px;
  font-size: 0.8rem;
}
.grade-a { background: rgba(0,229,160,0.15); color: var(--green); }
.grade-b { background: rgba(0,212,255,0.15); color: var(--accent); }
.grade-c { background: rgba(255,209,102,0.15); color: var(--yellow); }
.grade-d { background: rgba(255,79,109,0.15); color: var(--red); }

.btn-del {
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text3);
  background: var(--surface2);
  border: 1px solid var(--border);
  transition: all 0.2s;
}
.btn-del:hover { color: var(--red); border-color: var(--red); background: rgba(255,79,109,0.08); }

/* ── Buttons ── */
.btn-outline {
  padding: 9px 18px;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text2);
  background: var(--surface);
  border: 1px solid var(--border);
  transition: all var(--transition);
}
.btn-outline:hover { color: var(--text); border-color: var(--border2); background: var(--surface2); }
.btn-outline.btn-danger:hover { color: var(--red); border-color: var(--red); background: rgba(255,79,109,0.08); }

.history-actions { display: flex; gap: 8px; }

/* ── Footer ── */
.footer {
  background: var(--bg2);
  border-top: 1px solid var(--border);
  padding: 60px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-logo {
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}
.footer-logo em { color: var(--accent); font-style: normal; }
.footer-desc { font-size: 0.85rem; color: var(--text2); line-height: 1.6; }
.footer h3 {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text3);
  margin-bottom: 16px;
}
.footer-links ul { list-style: none; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { font-size: 0.88rem; color: var(--text2); transition: color var(--transition); }
.footer-links a:hover { color: var(--text); }
.footer-contact p { font-size: 0.85rem; color: var(--text2); margin-bottom: 8px; }
.footer-email {
  display: inline-block;
  font-weight: 600;
  color: var(--accent);
  font-size: 0.9rem;
  margin-bottom: 10px;
}
.footer-note { font-size: 0.75rem; color: var(--text3); margin-top: 8px; }
.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  flex-wrap: wrap;
}
.footer-bottom p { font-size: 0.8rem; color: var(--text3); }
.footer-legal { font-size: 0.72rem !important; opacity: 0.6; }

/* ── Number counter animation ── */
@keyframes countUp {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
.count-anim { animation: countUp 0.2s ease-out; }

/* ── Fade-in sections ── */
.section-enter {
  animation: sectionFadeIn 0.5s ease-out both;
}
@keyframes sectionFadeIn {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .nav-actions .btn-nav { display: none; }
  .hero { padding: 90px 20px 50px; }
  .hero-content { gap: 18px; }
  .mini-stats { max-width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; }
  .results-grid { grid-template-columns: 1fr 1fr; }
  .phase-line { width: 30px; }
  .quality-banner { flex-wrap: wrap; }
}
@media (max-width: 480px) {
  .results-grid { grid-template-columns: 1fr; }
  .stats-row { grid-template-columns: 1fr 1fr; }
  .mini-stat .mini-val { font-size: 1rem; }
}

/* ── Loading pulse ── */
@keyframes pulse {
  0%,100% { opacity: 1; }
  50% { opacity: 0.4; }
}
.pulsing { animation: pulse 1.5s ease-in-out infinite; }

/* ── Gauge needle rotation ── */
#gaugeNeedle { transform-origin: 150px 170px; transition: transform 0.15s ease-out; }