/* ========== RESET Y BASE ========== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-family);
  background: var(--bg-primary);
  color: var(--text-primary);
  transition: var(--transition);
  overflow: hidden;
}

/* ========== LAYOUT PRINCIPAL ========== */
.app-container {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

/* ========== SIDEBAR ========== */
.sidebar {
  width: var(--sidebar-width);
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  box-shadow: var(--shadow-md);
  z-index: 100;
}

.sidebar.collapsed {
  width: var(--sidebar-collapsed-width);
}

.sidebar.collapsed .logo-text,
.sidebar.collapsed .nav-item span,
.sidebar.collapsed .nav-title,
.sidebar.collapsed .theme-label {
  display: none;
}

.sidebar.collapsed .nav-item {
  justify-content: center;
  padding: 12px;
}

.sidebar-header {
  padding: 24px 20px;
  border-bottom: 1px solid var(--border-color);
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 20px;
  font-weight: 800;
  color: var(--accent-primary);
  letter-spacing: -0.5px;
}

.sidebar-logo i {
  font-size: 32px;
}

/* ========== NAVEGACIÓN ========== */
.sidebar-nav {
  flex: 1;
  padding: 20px 12px;
  overflow-y: auto;
}

.nav-section {
  margin-bottom: 24px;
}

.nav-title {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 2.5px;
  color: var(--text-muted);
  padding: 8px 16px;
  margin-bottom: 8px;
  font-weight: 700;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  border-radius: var(--border-radius-md);
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
  margin-bottom: 2px;
  border: none;
  background: none;
  width: 100%;
  font-size: 14px;
  font-weight: 500;
  text-align: left;
}

.nav-item:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.nav-item.active {
  background: var(--gradient-primary);
  color: #ffffff;
  font-weight: 600;
  box-shadow: 0 4px 15px rgba(37,211,102,0.3);
}

.nav-item i {
  width: 22px;
  text-align: center;
  font-size: 16px;
}

.nav-item .badge {
  margin-left: auto;
}

/* ========== FOOTER SIDEBAR ========== */
.sidebar-footer {
  padding: 16px;
  border-top: 1px solid var(--border-color);
}

.theme-toggle {
  display: flex;
  align-items: center;
  gap: 4px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: 4px;
}

.theme-btn {
  flex: 1;
  padding: 8px 12px;
  border-radius: var(--border-radius-sm);
  border: none;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
  font-size: 13px;
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.theme-btn.active {
  background: var(--bg-card);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
}

/* ========== CONTENIDO PRINCIPAL ========== */
.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-width: 0;
}

.content-header {
  height: var(--header-height);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  box-shadow: var(--shadow-sm);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 20px;
  cursor: pointer;
  padding: 8px;
}

.content-title {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.content-body {
  flex: 1;
  overflow-y: auto;
  padding: 32px;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 1024px) {
  .sidebar {
    width: var(--sidebar-collapsed-width);
  }
  
  .sidebar .logo-text,
  .sidebar .nav-item span,
  .sidebar .nav-title,
  .sidebar .theme-label {
    display: none;
  }
  
  .sidebar .nav-item {
    justify-content: center;
    padding: 12px;
  }
  
  .content-body {
    padding: 20px;
  }
}

@media (max-width: 768px) {
  .sidebar {
    position: fixed;
    left: -100%;
    width: 280px;
    height: 100vh;
  }
  
  .sidebar.open {
    left: 0;
  }
  
  .sidebar .logo-text,
  .sidebar .nav-item span,
  .sidebar .nav-title,
  .sidebar .theme-label {
    display: inline;
  }
  
  .menu-toggle {
    display: block;
  }
  
  .content-body {
    padding: 16px;
  }
  
  .content-header {
    padding: 0 16px;
  }
}