:root {
  --body-bg-color: #020617;
  --body-fg-color: #f8fafc;
  --card-bg-color: #0f172a;
  --enfasis-color: #38bdf8;
  --enfasis-color-dark: #0a7bb0;
  --muted-color: #7c8b9d;
  --border-color: rgba(255, 255, 255, 0.08);
  --border-color-btn: #0a2c4e;

  --color-success: #22c55e;
  --color-warning: #facc15;
  --color-danger: #ef4444;
  --color-info: #3b82f6;
}

html, body {
  height: 100%;
  margin: 0px;
}

body {
  margin: 0;
  padding: 0;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont,"Segoe UI", sans-serif;
  font-size: 15px;
  line-height: 1.5;
  letter-spacing: -0.01em;
  background-color: #020617;
  color: var(--body-fg-color);
  margin: 0;
}

h1, h2, h3, h4, h5, p {
  color: var(--body-fg-color);
}

/* Header base */
.app-header {
  background: var(--body-bg-color);
  color: #f8fafc;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

/* Contenedor */
.app-header .container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.85rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Logo */
.app-header .logo {
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.4px;
  display: flex;
  align-items: center;
}

.app-header .logo > img {
  width: 64px;
  height: auto;
  margin-right: 8px;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  transition: transform 0.2s ease;
}

.app-header .logo > img:hover {
  transform: scale(1.05);
}


.app-header .nav {
  display: flex; /* siempre visible en desktop */
  flex-direction: row; /* horizontal por defecto */
  gap: 20px;
}

/* Media querys Movil */
@media (max-width: 768px) {
  .app-header .nav {
    flex-direction: column;
    gap: 10px;
    max-height: 0;
    overflow: hidden;
    transition: 
      max-height 0.3s ease, 
      opacity 0.3s ease;
  }

  .app-header .nav.open {
    display: flex;
    max-height: 500px;
    opacity: 1;
  }


  .app-header .nav form {
    display: flex;
    align-items: center;
    justify-content: end;
  }

  .app-header .logo > img {
    width: 44px;
    border-radius: 8px;
  }

  .nav a {
    align-self: end;
  }

  .nav-toggle-container {
    margin-top: 0;
  }
}


/* Botón de navegación */
.nav-toggle-container {
  display: flex;
  justify-content: end;
  background-color: var(--body-bg-color);
  cursor: pointer;
}

#nav-toggle.open {
  display: flex;
  background-color: var(--body-bg-color);
  padding: 0.35rem 0.75rem;
  border-radius: 6px;
  cursor: pointer;
}

#nav-toggle {
  background: transparent;
  border: none;
  color: #f8fafc;
  font-size: 1.2rem;
  cursor: pointer;
}

@media (min-width: 768px) {
  .nav-toggle-container {
    display: none;
  }

  #nav-toggle {
    display: none;
  }

}

/* Links */
.app-header .nav a {
  color: #e5e7eb;
  text-decoration: none;
  font-size: 0.95rem;
  padding: 0.4rem 0.6rem;
  border-radius: 6px;
  transition: background 0.2s, color 0.2s;
}

.app-header .nav a:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
}

/* Botón logout */
.app-header .nav button {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: #f8fafc;
  padding: 0.35rem 0.75rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.85rem;
  transition: background 0.2s, border-color 0.2s;
}

.app-header .nav button:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.4);
}

.app-main {
  padding: 2rem 1.25rem;
  max-width: 1200px;
  margin: 0 auto;
  flex: 1;
}

.messages {
    list-style: none;
    padding: 0;
    margin: 1em 0;
}

.messages .message {
    padding: 10px 15px;
    margin-bottom: 10px;
    border-radius: 5px;
    font-weight: 500;
    color: #fff;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

/* Tipos de mensaje */
.messages .success {
    background-color: var(--color-success); /* verde */
}

.messages .error {
    background-color: var(--color-danger); /* rojo */
}

.messages .warning {
    background-color: var(--color-warning); /* naranja */
    color: #000;
}

.messages .info {
    background-color: var(--color-info); /* azul */
}

/* Página de error */
.error-page {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 70vh;
}

.error-card {
  text-align: center;
  padding: 3rem;
  background: var(--card-bg-color);
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.05);
  max-width: 500px;
}

.error-code {
  font-size: 5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--enfasis-color);
}

.error-actions {
  margin-top: 1.5rem;
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.45rem 0.8rem;
  border-radius: 6px;
  background-color: var(--card-bg-color);
  color: var(--body-fg-color);
  border: 2px solid var(--border-color);
  cursor: pointer;
  text-decoration: none;
  font-size: 0.9rem;
  transition: filter 0.2s ease;
}

.btn:hover {
  filter: brightness(1.2);
}

.btn-primary {
  background-color: var(--enfasis-color-dark);
  border-color: var(--border-color-btn);
}

.btn-secondary {
  background-color: var(--card-bg-color);
  border-color: var(--border-color);
}

.btn-sm {
  padding: 0.35rem 0.6rem;
  font-size: 0.8rem;
}

.btn-back {
  margin-bottom: 20px;
  font-size: 0.8rem;
  background-color: var(--card-bg-color);
  border-color: var(--border-color);
  padding: 0.35rem 0.6rem;
}