/* --------------------------------------------------
   🌙 YOUTUBE DARK THEME — ESTILOS BASE
   -------------------------------------------------- */

:root {
  --color-bg: #0f0f0f;            /* fondo principal YouTube Dark */
  --color-card: #1a1a1a;          /* tarjetas / secciones */
  --color-card-hover: #222;       /* hover suave */
  --color-text: #f1f1f1;          /* texto principal */
  --color-text-light: #aaa;       /* texto secundario */
  --color-primary: #ff0000;       /* rojo YouTube */
  --color-accent: #3ea6ff;        /* azul YouTube Studio */
  --radius: 12px;
  --shadow: 0 4px 12px rgba(0,0,0,0.4);
  --shadow-hover: 0 6px 18px rgba(0,0,0,0.55);
  --transition: 0.2s ease;
  --font: "Inter", "Roboto", sans-serif;
}

/* Fondo general */
body {
  margin: 0;
  margin-top: 40px;
  padding-top: 56px; /* coincide con el header */
  background: var(--color-bg);
  font-family: var(--font);
  color: var(--color-text);
}


/* --------------------------------------------------
   🎬 HEADER ESTILO YOUTUBE DARK
   -------------------------------------------------- */

#app-header {
  position: fixed;
  top: 40px;
  left: 0;
  width: 100%;
  height: 56px; /* altura estándar YouTube */
  background: #0f0f0f;
  display: flex;
  align-items: center;
  padding: 0 16px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.4);
  z-index: 10000;
}

.app-title {
  color: #fff;
  font-size: 18px;
  font-weight: 600;
  margin-left: 12px;
}

/* Botón hamburguesa dentro del header */
.menu-toggle {
  background: transparent;
  border: none;
  color: #fff;
  font-size: 26px;
  cursor: pointer;
  padding: 6px;
  border-radius: 6px;
  transition: 0.2s ease;
}

.menu-toggle:hover {
  background: #222;
}


/* Secciones */
.section {
  background: var(--color-card);
  margin: 16px;
  padding: 20px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.section:hover {
  background: var(--color-card-hover);
  box-shadow: var(--shadow-hover);
}

/* Títulos */
.section h2 {
  margin-top: 0;
  font-size: 20px;
  font-weight: 600;
  color: var(--color-text);
}

/* Inputs */
input, select {
  width: 100%;
  padding: 12px;
  border-radius: var(--radius);
  border: 1px solid #333;
  font-size: 15px;
  margin-top: 6px;
  margin-bottom: 12px;
  background: #111;
  color: var(--color-text);
  transition: var(--transition);
}

input:focus, select:focus {
  border-color: var(--color-accent);
  outline: none;
  box-shadow: 0 0 0 3px rgba(62,166,255,0.3);
}

/* Botones */
button {
  padding: 10px 16px;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  font-size: 15px;
  transition: var(--transition);
  background: #333;
  color: var(--color-text);
}

button:hover {
  background: #444;
}

button:active {
  transform: scale(0.97);
}

/* Botón primario */
.btn-primary {
  background: var(--color-primary);
  color: white;
}

.btn-primary:hover {
  background: #cc0000;
}

/* Botón secundario */
.btn-secondary {
  background: #333;
  color: var(--color-text);
}

/* Botón hamburguesa */
.menu-toggle {
  position: fixed;
  top: 16px;
  left: 16px;
  z-index: 9999; /* siempre por encima */
  background: #1a1a1a;
  color: #fff;
  border: none;
  padding: 12px 14px;
  font-size: 22px;
  border-radius: 50%;
  box-shadow: 0 2px 8px rgba(0,0,0,0.4);
  cursor: pointer;
  transition: 0.2s ease;
}

.menu-toggle:hover {
  background: #222;
}

#selector-rutas {
  margin-top: 60px; /* evita solapamiento */
}



/* Layout móvil */
@media (max-width: 600px) {
  .section {
    margin: 12px;
    padding: 16px;
  }

  input, select {
    font-size: 14px;
  }
}