:root {
  --bg: #02040a;
  --bg-soft: #050815;
  --fg: #e0ffe0;
  --accent: #37ff8b;
  --accent-soft: rgba(55, 255, 139, 0.12);
  --error: #ff4b81;
  --font-mono: "JetBrains Mono", "Fira Code", "SF Mono", Menlo, monospace;
}

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

html, body {
  height: 100%;
}

body {
  background: radial-gradient(circle at top, #07111f 0, #000 55%);
  color: var(--fg);
  font-family: var(--font-mono);
}

/* subtle scanlines */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(
    rgba(255,255,255,0.03) 1px,
    transparent 1px
  );
  background-size: 100% 3px;
  mix-blend-mode: soft-light;
  opacity: 0.4;
}

#app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding: 12px;
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  background: linear-gradient(90deg, #050a12, #020308);
  border: 1px solid rgba(55, 255, 139, 0.4);
  border-radius: 10px;
  box-shadow: 0 0 18px rgba(55, 255, 139, 0.25);
}

.logo {
  font-size: 0.9rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

.status {
  font-size: 0.8rem;
  opacity: 0.8;
}

/* blinking cursor effect */
.status::after {
  content: "▌";
  margin-left: 4px;
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

.main {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 10px;
}

.terminal {
  flex: 1;
  background: radial-gradient(circle at top left, #07121e, #020309);
  border-radius: 12px;
  padding: 10px;
  border: 1px solid rgba(55, 255, 139, 0.3);
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.9);
  font-size: 0.8rem;
  overflow: auto;
  white-space: pre-wrap;
}

.line {
  margin-bottom: 3px;
}

.line-prefix {
  color: var(--accent);
  opacity: 0.9;
}

.line-error {
  color: var(--error);
}

.line-info {
  color: var(--fg);
}

.line-dim {
  opacity: 0.7;
}

.controls {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.btn {
  flex: 1;
  min-width: 140px;
  padding: 10px 12px;
  border-radius: 999px;
  border: 1px solid var(--accent);
  background: radial-gradient(circle at top, var(--accent-soft), #050812);
  color: var(--fg);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: transform 0.08s ease-out, box-shadow 0.08s ease-out, border-color 0.1s;
}

.btn.secondary {
  border-color: rgba(255, 255, 255, 0.5);
}

.btn:active {
  transform: scale(0.97);
  box-shadow: 0 0 0 rgba(0,0,0,0);
}

.btn:disabled {
  opacity: 0.4;
  cursor: default;
}

.footer {
  margin-top: 8px;
  font-size: 0.7rem;
  opacity: 0.7;
  display: flex;
  justify-content: space-between;
}

#tag-label {
  color: var(--accent);
}

@media (min-width: 768px) {
  #app {
    max-width: 800px;
    margin: 0 auto;
  }
}