/* ============================================
   SIMULADOR DE COMPILADOR - ESTILO Y2K AERO
   Inspirado en Windows XP/Vista Aero
   ============================================ */

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

:root {
  color-scheme: dark;
  /* Colores Y2K/Aero */
  --electric-blue: #00BFFF;
  --cyan: #00FFFF;
  --soft-purple: #9370DB;
  --metallic-silver: #C0C0C0;
  --white: #FFFFFF;
  --dark-blue: #001F3F;
  --midnight: #0A0E27;
  
  /* Variables originales adaptadas */
  --bg: #0A0E27;
  --card-bg: rgba(255, 255, 255, 0.08);
  --accent: #00BFFF;
  --accent-muted: rgba(0, 191, 255, 0.2);
  --text: #FFFFFF;
  --text-muted: rgba(255, 255, 255, 0.7);
  --error: #ff5f57;
  --success: #28ca42;
  
  /* Gradientes */
  --gradient-primary: linear-gradient(135deg, #00BFFF 0%, #9370DB 50%, #00FFFF 100%);
  --gradient-bg: linear-gradient(135deg, #0A0E27 0%, #001F3F 30%, #0A0E27 100%);
  --gradient-glass: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.05) 100%);
  --gradient-button: linear-gradient(135deg, #00BFFF 0%, #00FFFF 100%);
  
  /* Sombras y efectos */
  --shadow-soft: 0 8px 32px rgba(0, 191, 255, 0.2);
  --shadow-glow: 0 0 20px rgba(0, 255, 255, 0.5);
  --shadow-inner: inset 0 2px 4px rgba(0, 0, 0, 0.2);
  --shadow-text: 0 0 10px rgba(0, 255, 255, 0.8);
  
  font-family: "Inter", "Segoe UI", system-ui, sans-serif;
}

body {
  margin: 0;
  min-height: 100vh;
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  color: var(--text);
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 3rem 1rem;
}

.card {
  width: min(1100px, 100%);
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 24px;
  box-shadow: 
    0 8px 32px rgba(0, 0, 0, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.1),
    0 0 30px rgba(0, 191, 255, 0.2);
  padding: 3rem clamp(1.5rem, 4vw, 3rem);
  position: relative;
  z-index: 1;
}

header h1 {
  margin: 0;
  font-size: clamp(2rem, 3vw, 2.8rem);
  letter-spacing: -0.03em;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 0 30px rgba(0, 191, 255, 0.5);
  filter: drop-shadow(0 0 10px rgba(0, 255, 255, 0.3));
}

header p {
  color: var(--text-muted);
  margin-top: 0.75rem;
  max-width: 60ch;
  line-height: 1.6;
}

form {
  margin: 2.5rem 0;
  display: grid;
  gap: 1rem;
}

label {
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--cyan);
  text-shadow: 0 0 5px rgba(0, 255, 255, 0.5);
}

.input-group {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

input[type="text"] {
  flex: 1 1 260px;
  padding: 0.85rem 1.1rem;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  color: var(--text);
  font-size: 1rem;
  transition: all 0.3s ease;
  box-shadow: 
    inset 0 2px 4px rgba(0, 0, 0, 0.2),
    0 0 0 0 rgba(0, 191, 255, 0);
}

input[type="text"]:focus {
  outline: none;
  border-color: var(--cyan);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 
    inset 0 2px 4px rgba(0, 0, 0, 0.2),
    0 0 0 4px rgba(0, 191, 255, 0.2),
    0 0 20px rgba(0, 255, 255, 0.3);
}

button {
  padding: 0.85rem 1.4rem;
  border-radius: 14px;
  border: none;
  background: var(--gradient-button);
  color: var(--white);
  font-weight: 700;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 
    0 8px 32px rgba(0, 191, 255, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.3),
    inset 0 -2px 10px rgba(0, 0, 0, 0.3);
  position: relative;
  overflow: hidden;
}

button::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: left 0.5s ease;
}

button:hover::before {
  left: 100%;
}

button:hover {
  transform: translateY(-2px);
  box-shadow: 
    0 12px 40px rgba(0, 191, 255, 0.6),
    0 0 30px rgba(0, 255, 255, 0.8),
    inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

button:active {
  transform: translateY(0);
  box-shadow: 
    0 4px 16px rgba(0, 191, 255, 0.4),
    inset 0 2px 4px rgba(0, 0, 0, 0.3);
}

.status {
  min-height: 1.5rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.status.success {
  color: var(--success);
  text-shadow: 0 0 10px rgba(40, 202, 66, 0.8);
}

.status.error {
  color: var(--error);
  text-shadow: 0 0 10px rgba(255, 95, 87, 0.8);
}

.error-preview {
  display: none;
  margin-top: 1rem;
  padding: 1rem;
  border-radius: 12px;
  background: rgba(255, 95, 87, 0.1);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 95, 87, 0.3);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas,
    "Liberation Mono", "Courier New", monospace;
  line-height: 1.5;
  box-shadow: 
    0 4px 20px rgba(255, 95, 87, 0.2),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.error-expression {
  display: block;
  margin-bottom: 0.5rem;
}

.error-expression mark {
  background: rgba(255, 95, 87, 0.6);
  color: var(--text);
  border-radius: 6px;
  padding: 0 0.15rem;
  box-shadow: 0 0 10px rgba(255, 95, 87, 0.5);
}

.results {
  display: grid;
  gap: 1.5rem;
}

.panel {
  border-radius: 18px;
  padding: 1.75rem;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(15px);
  box-shadow: 
    0 8px 32px rgba(0, 0, 0, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.1),
    0 0 20px rgba(0, 191, 255, 0.15);
  transition: all 0.3s ease;
}

.panel:hover {
  border-color: rgba(0, 255, 255, 0.3);
  box-shadow: 
    0 12px 40px rgba(0, 191, 255, 0.25),
    inset 0 1px 0 rgba(255, 255, 255, 0.15),
    0 0 30px rgba(0, 255, 255, 0.3);
}

.panel h2 {
  margin-top: 0;
  margin-bottom: 1rem;
  font-size: 1.2rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--cyan);
  text-shadow: 0 0 10px rgba(0, 255, 255, 0.6);
  font-weight: 700;
}

.panel pre {
  white-space: pre-wrap;
  word-break: break-word;
  margin: 0;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas,
    "Liberation Mono", "Courier New", monospace;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.9);
  text-shadow: 0 0 5px rgba(0, 255, 255, 0.3);
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 0.5rem;
  font-size: 0.95rem;
}

th,
td {
  text-align: left;
  padding: 0.6rem 0.8rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

th {
  color: var(--cyan);
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-shadow: 0 0 5px rgba(0, 255, 255, 0.5);
  font-weight: 700;
}

tbody tr {
  transition: background 0.2s ease;
}

tbody tr:hover {
  background: rgba(0, 191, 255, 0.1);
}

tbody tr:last-child td {
  border-bottom: none;
}

td code {
  color: var(--cyan);
  text-shadow: 0 0 5px rgba(0, 255, 255, 0.5);
  font-weight: 600;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-top: 0.5rem;
  padding: 0.4rem 0.75rem;
  border-radius: 999px;
  background: rgba(0, 191, 255, 0.15);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(0, 255, 255, 0.3);
  color: var(--cyan);
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.03em;
  box-shadow: 0 0 15px rgba(0, 191, 255, 0.3);
  text-shadow: 0 0 5px rgba(0, 255, 255, 0.5);
}

/* ============================================
   ÁRBOL AST - DISEÑO Y2K AERO MEJORADO
   ============================================ */

.ast-view {
  display: grid;
  gap: 1rem;
}

.ast-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.ast-controls span {
  color: var(--text-muted);
  font-weight: 600;
  letter-spacing: 0.02em;
}

button.secondary {
  background: transparent;
  border: 1px solid rgba(148, 163, 184, 0.35);
  color: var(--text);
  box-shadow: none;
}

button.secondary:hover {
  background: rgba(56, 189, 248, 0.12);
  box-shadow: 0 14px 24px -18px rgba(56, 189, 248, 0.6);
}

button.secondary:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  background: transparent;
  box-shadow: none;
  transform: none;
}

.ast-graph-wrapper {
  position: relative;
  border-radius: 16px;
  border: 1px solid rgba(148, 163, 184, 0.2);
  background: rgba(15, 23, 42, 0.4);
  padding: 1.5rem;
  overflow-x: auto;
}

.ast-graph-wrapper svg {
  width: 100%;
  min-width: 420px;
  min-height: 260px;
  display: block;
}

.ast-link {
  stroke: rgba(148, 163, 184, 0.35);
  stroke-width: 2;
  stroke-linecap: round;
  transition: stroke 0.2s ease, stroke-width 0.2s ease;
}

.ast-link.active {
  stroke: var(--accent);
  stroke-width: 3;
}

.ast-node circle {
  fill: rgba(15, 23, 42, 0.9);
  stroke: rgba(148, 163, 184, 0.45);
  stroke-width: 2;
  transition: stroke 0.2s ease, fill 0.2s ease, filter 0.2s ease;
}

.ast-node text {
  fill: var(--text);
  font-weight: 600;
  font-size: 1rem;
  text-anchor: middle;
}

.ast-node.active circle {
  stroke: var(--accent);
  stroke-width: 3;
  fill: rgba(56, 189, 248, 0.15);
}

.ast-node.active {
  filter: drop-shadow(0 12px 22px rgba(56, 189, 248, 0.35));
}

/* Scrollbar personalizado estilo Y2K */
::-webkit-scrollbar {
  width: 12px;
}

::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.3);
  border-radius: 6px;
}

::-webkit-scrollbar-thumb {
  background: var(--gradient-button);
  border-radius: 6px;
  box-shadow: 0 0 10px var(--cyan);
  border: 2px solid transparent;
  background-clip: padding-box;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--cyan);
  box-shadow: 0 0 15px var(--cyan);
}

@media (max-width: 720px) {
  body {
    padding: 1.5rem 0.75rem;
  }

  .card {
    padding: 2rem 1.25rem;
  }

  .panel {
    padding: 1.35rem;
  }

  .ast-graph-wrapper {
    padding: 1rem;
  }

  .ast-graph-wrapper svg {
    min-width: 320px;
    min-height: 220px;
  }
}