@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  --bg: #0d0f14;
  --bg2: #12151c;
  --bg3: #181c25;
  --border: rgba(255,255,255,0.07);
  --border-glow: rgba(99,179,237,0.3);
  --text: #ffffff;
  --text-muted: #cbd5e0;
  --text-dim: #718096;

  --accent: #63b3ed;
  --accent2: #7c3aed;
  --green: #68d391;
  --yellow: #f6e05e;
  --red: #fc8181;
  --orange: #f6ad55;
  --pink: #f687b3;

  --cmd-bg: rgba(99,179,237,0.1);
  --cmd-border: rgba(99,179,237,0.4);
  --cmd-text: #90cdf4;

  --flag-bg: rgba(104,211,145,0.1);
  --flag-border: rgba(104,211,145,0.4);
  --flag-text: #9ae6b4;

  --arg-bg: rgba(246,173,85,0.1);
  --arg-border: rgba(246,173,85,0.4);
  --arg-text: #fbd38d;

  --op-bg: rgba(246,240,94,0.1);
  --op-border: rgba(246,240,94,0.4);
  --op-text: #faf089;

  --sub-bg: rgba(246,135,179,0.1);
  --sub-border: rgba(246,135,179,0.4);
  --sub-text: #feb2d9;

  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 40px rgba(99,179,237,0.15);
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', system-ui, sans-serif;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ── Background glow ── */
body::before {
  content: '';
  position: fixed;
  top: -30vh;
  left: 50%;
  transform: translateX(-50%);
  width: 80vw;
  height: 60vh;
  background: radial-gradient(ellipse, rgba(99,179,237,0.06) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* ── Layout ── */
.app {
  position: relative;
  z-index: 1;
  max-width: 960px;
  margin: 0 auto;
  padding: 40px 20px 80px;
}

/* ── Header ── */
header {
  text-align: center;
  margin-bottom: 48px;
  animation: fadeDown 0.6s ease both;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.logo-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  box-shadow: 0 4px 20px rgba(99,179,237,0.3);
}

.logo-text {
  font-size: 1.6rem;
  font-weight: 700;
  background: linear-gradient(120deg, #fff 30%, var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

#logo-reset {
  cursor: pointer;
  transition: transform 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

#logo-reset:hover {
  transform: scale(1.05);
}

#logo-reset:active {
  transform: scale(0.95);
}

.github-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
  text-decoration: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 14px;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.github-link:hover {
  color: var(--text);
  border-color: var(--border-glow);
  background: rgba(99,179,237,0.06);
}

.github-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.tagline {
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 400;
}

/* ── Input Section ── */
.input-section {
  margin-bottom: 40px;
  animation: fadeDown 0.6s 0.1s ease both;
}

.input-wrapper {
  position: relative;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  transition: border-color 0.3s, box-shadow 0.3s;
}

.input-wrapper:focus-within {
  border-color: var(--border-glow);
  box-shadow: var(--shadow-glow);
}

.prompt-indicator {
  position: absolute;
  left: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.1rem;
  color: var(--green);
  pointer-events: none;
  user-select: none;
  z-index: 1;
}

#command-input {
  width: 100%;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text);
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.05rem;
  padding: 20px 130px 20px 50px;
  caret-color: var(--accent);
  letter-spacing: 0.02em;
}

#command-input::placeholder {
  color: var(--text-dim);
  font-weight: 300;
}

.input-actions {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  gap: 8px;
}

.btn-explain {
  background: linear-gradient(135deg, var(--accent), #4299e1);
  color: white;
  border: none;
  border-radius: 10px;
  padding: 8px 20px;
  font-family: 'Inter', sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
  letter-spacing: 0.01em;
}

.btn-explain:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(99,179,237,0.4);
}

.btn-explain:active { transform: translateY(0); }

.btn-clear {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  border-radius: 10px;
  padding: 8px 14px;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.15s;
}

.btn-clear:hover { background: var(--bg3); color: var(--text); }

/* ── Tool Pill Bar ── */
.tool-pill-bar {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 28px;
  animation: fadeDown 0.6s 0.05s ease both;
}

.tool-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 6px 14px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}

.tool-pill:hover {
  border-color: rgba(255,255,255,0.2);
  color: var(--text);
  background: var(--bg3);
}

.tool-pill.active {
  background: linear-gradient(135deg, var(--accent), #4299e1);
  border-color: var(--accent);
  color: white;
  box-shadow: 0 2px 12px rgba(99,179,237,0.35);
}

.pill-icon {
  font-style: normal;
  font-size: 0.85rem;
  line-height: 1;
}

/* ── Example chips ── */
.examples-hint {
  margin-top: 12px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  flex-wrap: wrap;
}

.example-chips-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  flex: 1;
}

.hint-label {
  font-size: 0.78rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding-top: 5px;
}

.example-chip {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 4px 12px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s;
  animation: fadeIn 0.25s ease both;
}

.example-chip:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--cmd-bg);
}

/* ── Token Legend ── */
.legend {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 28px;
  animation: fadeIn 0.4s ease both;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 3px;
}

/* ── Results ── */
#results {
  animation: fadeIn 0.4s ease both;
}

/* Command bar */
.command-bar {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-bottom: 28px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.05rem;
  letter-spacing: 0.03em;
  line-height: 1.8;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  align-items: center;
}

.token {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 6px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.95rem;
}

.token:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,0.4); }
.token.active { transform: translateY(-2px); }

.token.command { background: var(--cmd-bg); border-color: var(--cmd-border); color: var(--cmd-text); }
.token.flag    { background: var(--flag-bg); border-color: var(--flag-border); color: var(--flag-text); }
.token.argument{ background: var(--arg-bg); border-color: var(--arg-border); color: var(--arg-text); }
.token.operator{ background: var(--op-bg); border-color: var(--op-border); color: var(--op-text); }
.token.subcommand { background: var(--sub-bg); border-color: var(--sub-border); color: var(--sub-text); }

/* ── Explanation Cards ── */
.cards-grid {
  display: grid;
  gap: 14px;
}

.card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 4px;
  border-radius: 4px 0 0 4px;
  transition: opacity 0.2s;
}

.card.command::before { background: var(--accent); }
.card.flag::before    { background: var(--green); }
.card.argument::before{ background: var(--orange); }
.card.operator::before{ background: var(--yellow); }
.card.subcommand::before { background: var(--pink); }

.card:hover, .card.highlighted {
  border-color: var(--border-glow);
  transform: translateX(4px);
  box-shadow: var(--shadow);
}

.card.command:hover, .card.command.highlighted { border-color: var(--cmd-border); }
.card.flag:hover,    .card.flag.highlighted    { border-color: var(--flag-border); }
.card.argument:hover,.card.argument.highlighted{ border-color: var(--arg-border); }
.card.operator:hover,.card.operator.highlighted{ border-color: var(--op-border); }
.card.subcommand:hover,.card.subcommand.highlighted { border-color: var(--sub-border); }

.card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}

.card-badges {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.card-badge {
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 2px 8px;
  border-radius: 4px;
  white-space: nowrap;
}

.card.command .card-badge   { background: var(--cmd-bg); color: var(--cmd-text); }
.card.flag .card-badge      { background: var(--flag-bg); color: var(--flag-text); }
.card.argument .card-badge  { background: var(--arg-bg); color: var(--arg-text); }
.card.operator .card-badge  { background: var(--op-bg); color: var(--op-text); }
.card.subcommand .card-badge{ background: var(--sub-bg); color: var(--sub-text); }

/* ── Per-tool badge ── */
.tool-badge {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 2px 8px;
  border-radius: 4px;
  white-space: nowrap;
  background: color-mix(in srgb, var(--tb-color) 15%, transparent);
  color: var(--tb-color);
  border: 1px solid color-mix(in srgb, var(--tb-color) 35%, transparent);
}

.card-token {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
}

.card-desc {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

.card-man-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 10px;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-dim);
  text-decoration: none;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2px 8px;
  transition: color 0.2s, border-color 0.2s;
}

.card-man-link:hover {
  color: var(--accent);
  border-color: var(--border-glow);
}

.card-man-icon {
  font-size: 0.72rem;
}

/* ── Combined-flag multi-line rows ── */
.flag-parts {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.flag-part-row {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.flag-part-name {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--flag-text);
  min-width: 2.8rem;   /* aligns descriptions into a column */
  flex-shrink: 0;
}

.flag-part-desc {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
  font-family: 'Inter', system-ui, sans-serif;
}

/* ── Empty / Welcome ── */
.welcome {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-dim);
}

.welcome-icon {
  font-size: 3.5rem;
  margin-bottom: 16px;
  opacity: 0.5;
}

.welcome h2 {
  font-size: 1.2rem;
  color: var(--text-muted);
  margin-bottom: 8px;
  font-weight: 500;
}

.welcome p {
  font-size: 0.9rem;
}

/* ── Error ── */
.error-msg {
  background: rgba(252,129,129,0.1);
  border: 1px solid rgba(252,129,129,0.3);
  border-radius: var(--radius-sm);
  padding: 14px 20px;
  color: #fc8181;
  font-size: 0.9rem;
}

/* ── Animations ── */
@keyframes fadeDown {
  from { opacity: 0; transform: translateY(-14px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes slideIn {
  from { opacity: 0; transform: translateX(-10px); }
  to   { opacity: 1; transform: translateX(0); }
}

.card { animation: slideIn 0.3s ease both; }
.card:nth-child(1) { animation-delay: 0.03s; }
.card:nth-child(2) { animation-delay: 0.06s; }
.card:nth-child(3) { animation-delay: 0.09s; }
.card:nth-child(4) { animation-delay: 0.12s; }
.card:nth-child(5) { animation-delay: 0.15s; }
.card:nth-child(6) { animation-delay: 0.18s; }
.card:nth-child(7) { animation-delay: 0.21s; }
.card:nth-child(8) { animation-delay: 0.24s; }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--bg3); border-radius: 3px; }

/* ── Responsive ── */
@media (max-width: 640px) {
  .app { padding: 24px 16px 60px; }
  #command-input { font-size: 0.9rem; padding: 16px 110px 16px 44px; }
  .logo-text { font-size: 1.3rem; }
  .input-actions { gap: 6px; }
  .btn-explain { padding: 7px 14px; font-size: 0.83rem; }
  .tool-pill-bar { gap: 6px; }
  .tool-pill { font-size: 0.75rem; padding: 5px 10px; }
}