:root {
  /* Tvoja PRO Paleta */
  --bg-body: #05080C;
  --bg-header: #080D14;
  --bg-card: #111822;
  --bg-input: #0b1016;
  --bg-highlight: #151F2B;

  --text-main: #F3F6FB;
  --text-sec: #A6B3C5;
  --text-muted: #7A8898;

  --brand-green: #00C853;
  --brand-green-hover: #009624;
  --soft-green: #1A3A2A;
  --text-on-soft: #58E09C;

  --color-danger: #EF4444;
  --color-warning: #F59E0B;
  --color-info: #3B82F6;
  --color-cmd: #F3F6FB;
  --color-arg: #00C853;
  --color-param: #FF9100;

  --border: 1px solid #1E293B;
  --radius: 12px;
  --shadow: 0 4px 20px rgba(0,0,0,0.5);
}

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

body {
  background-color: var(--bg-body);
  color: var(--text-main);
  font-family: 'Inter', sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
header {
  background: var(--bg-header);
  border-bottom: 1px solid #151F2B;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 50;
  gap: 1rem;
}

.brand {
  font-weight: 800;
  font-size: 1.5rem;
  letter-spacing: -0.5px;
  color: var(--text-main);
  text-decoration: none;
  white-space: nowrap;
}
.brand span { color: var(--brand-green); }

.header-subtitle {
  font-size: 0.8rem;
  color: var(--text-muted);
  white-space: nowrap;
}

/* ✅ nové: header right blok (subtitle + language) */
.header-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* ✅ nové: language toggle */
.lang-toggle {
  display: inline-flex;
  border: 1px solid #1E293B;
  border-radius: 999px;
  overflow: hidden;
  background: var(--bg-card);
}

.lang-btn {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--text-sec);
  padding: 6px 10px;
  cursor: pointer;
  font-weight: 700;
  font-size: 0.75rem;
  letter-spacing: 0.5px;
}

.lang-btn:hover { color: var(--text-main); }

.lang-btn.active {
  background: var(--soft-green);
  color: var(--text-on-soft);
}

/* Main Layout */
main {
  flex: 1;
  padding: 2rem;
  max-width: 1400px;
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 1.5rem;
}

@media (max-width: 900px) {
  main { grid-template-columns: 1fr; }

  /* na mobile schováme subtitle, aby hlavička nebola preplnená */
  .header-subtitle { display: none; }
}

/* Sidebar (Command List) */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.cat-title {
  color: var(--text-muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin: 1.5rem 0 0.5rem 0;
  font-weight: 700;
  border-bottom: 1px solid #1E293B;
  padding-bottom: 5px;
}
.cat-title:first-child { margin-top: 0; }

.cmd-btn {
  background: var(--bg-card);
  border: 1px solid transparent;
  color: var(--text-sec);
  padding: 10px 14px;
  border-radius: 8px;
  cursor: pointer;
  text-align: left;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 600;
  font-size: 0.9rem;
  transition: 0.2s;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.cmd-btn:hover { background: var(--bg-highlight); color: var(--text-main); }
.cmd-btn.active {
  background: var(--soft-green);
  color: var(--text-on-soft);
  border-color: var(--brand-green);
}
.cmd-btn i { font-size: 0.8rem; opacity: 0.5; }

/* Content Area */
.builder-area {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.card {
  background: var(--bg-card);
  border: var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}

h2 {
  font-size: 1.2rem;
  color: var(--text-main);
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 10px;
}
.desc {
  color: var(--text-sec);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

/* Form Elements */
.options-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1rem;
}

.opt-group {
  background: var(--bg-input);
  padding: 12px 15px;
  border-radius: 8px;
  border: 1px solid #1E293B;
  transition: 0.2s;
}
.opt-group:hover { border-color: #2A3B4C; }

.opt-group label {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  color: var(--text-main);
  font-size: 0.9rem;
}

.opt-group input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--brand-green);
  cursor: pointer;
}

.opt-desc {
  display: block;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 4px;
  margin-left: 28px;
}

.input-group { margin-bottom: 1rem; }
.input-label {
  display: block;
  color: var(--text-sec);
  font-size: 0.85rem;
  margin-bottom: 0.5rem;
}

input[type="text"], input[type="number"] {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid #1E293B;
  color: var(--text-main);
  padding: 10px;
  border-radius: 8px;
  outline: none;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9rem;
}
input:focus { border-color: var(--brand-green); }

/* Select */
.select-control {
  width: 100%;
  padding: 10px;
  border-radius: 8px;
  background: var(--bg-input);
  color: var(--text-main);
  border: 1px solid #1E293B;
  outline: none;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9rem;
}
.select-control:focus { border-color: var(--brand-green); }

/* Terminal Preview */
.terminal {
  background: #000;
  border: 1px solid #333;
  border-radius: 8px;
  padding: 1.5rem;
  font-family: 'JetBrains Mono', monospace;
  position: relative;
  margin-top: auto;
}

.terminal-header {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 24px;
  background: #1a1a1a;
  border-bottom: 1px solid #333;
  border-radius: 8px 8px 0 0;
  display: flex;
  align-items: center;
  padding-left: 10px;
  gap: 6px;
}

.dot { width: 10px; height: 10px; border-radius: 50%; }
.dot.red { background: #FF5F56; }
.dot.yellow { background: #FFBD2E; }
.dot.green { background: #27C93F; }

.cmd-display {
  margin-top: 15px;
  font-size: 1.1rem;
  line-height: 1.5;
  color: var(--color-cmd);
  word-break: break-all;
}

.prompt {
  color: var(--brand-green);
  margin-right: 8px;
  user-select: none;
}

.cursor {
  display: inline-block;
  width: 8px;
  height: 1.2rem;
  background: var(--brand-green);
  animation: blink 1s infinite;
  vertical-align: middle;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

/* ✅ FIX: tu ti chýbala } a rozbíjalo to zvyšok CSS */
.explanation {
  margin-top: 1rem;
  padding: 1rem;
  background: rgba(59, 130, 246, 0.1);
  border-left: 3px solid var(--color-info);
  border-radius: 6px;
  color: var(--text-sec);
}

/* action row (button) */
.action-row {
  display: flex;
  justify-content: flex-start;
  gap: 0.75rem;
}

.copy-btn {
  background: var(--brand-green);
  color: #04140B;
  border: 0;
  border-radius: 10px;
  padding: 10px 14px;
  font-weight: 800;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: 0.2s;
}

.copy-btn:hover {
  background: var(--brand-green-hover);
}