* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: system-ui, sans-serif;
}

body {
  background: radial-gradient(circle at top, #020617, #000);
  color: #e5e7eb;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  padding: 40px 20px;
}

.app {
  width: 100%;
  max-width: 440px;
  background: rgba(2, 6, 23, 0.95);
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.8);
}

/* Title */
.zilla-title {
  text-align: center;
  color: #22c55e;
  text-shadow: 0 0 15px rgba(34,197,94,.6);
}

.tagline {
  text-align: center;
  font-size: 13px;
  color: #94a3b8;
  margin-bottom: 20px;
}

/* Input */
.task-input {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 8px;
  margin-bottom: 20px;
}

.task-input input {
  background: #020617;
  border: 1px solid #1e293b;
  color: #e5e7eb;
  padding: 10px;
  border-radius: 8px;
}

.task-input button {
  background: #22c55e;
  border: none;
  padding: 10px 14px;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
}

/* Task list */
ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

li {
  background: #020617;
  border: 1px solid #1e293b;
  border-radius: 12px;
  padding: 14px;
}

/* Buttons */
li button {
  margin-top: 8px;
  margin-right: 6px;
  padding: 6px 12px;
  border: none;
  border-radius: 6px;
  cursor: pointer;
}

.start { background: #3b82f6; color: white; }
.stop { background: #f97316; color: white; }
.delete { background: #dc2626; color: white; }

/* Godzilla running glow */
.running {
  border-color: #22c55e;
  box-shadow: 0 0 20px rgba(34,197,94,.6);
}

/* Mach score */
.mach-high { color: #22c55e; }
.mach-low { color: #ef4444; }