/* ===== Base Styles ===== */
:root {
  --blue-color: #4f46e5; /* indigo-700 */
  --blue-hover: #4338ca;
  --text-color: #111827;
  --text-inverse: #f9fafb;
  --bg-light: #ffffff;
  --bg-dark: #111827;
  --accent-color: #ec4899; /* pink-500 */
  --border-radius: 0.375rem;
  --transition: all 0.2s ease-in-out;
}

/* ===== Layout Structure ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

.page-container {
  width: 100%;
  margin: 20px auto 0;
  padding: 0 1rem;
}

@media (min-width: 992px) {
  .page-container {
    padding-left: 280px;
  }
}

/* ===== Header/Nav Styles ===== */
header {
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius) var(--border-radius) 0 0;
}

.nav-wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}

.nav-container {
  background-color: var(--blue-color);
  width: 100%;
}

.dark .nav-container {
  background-color: #000;
}

.nav-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem;
}

.nav-list {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.nav-item a {
  color: var(--text-inverse);
  text-decoration: none;
  transition: var(--transition);
  padding: 0.5rem 0;
  display: block;
}

.nav-item a:hover,
.nav-item a:focus {
  color: var(--accent-color);
}

.nav-item .router-link-active {
  color: var(--accent-color);
  font-weight: 500;
}

/* ===== Background Elements ===== */
.background-image {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  z-index: 0;
  height: 100px;
  margin: 0 0;
  width: 100%;
}

.overlay {
  position: relative;
  z-index: 10;
}

/* ===== Utility Classes ===== */
.center-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.side-by-side {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.margin {
  margin: 20px;
}

.margin-sm {
  margin: 5px;
}

.pad-sides-sm {
  padding: 0 8px;
}

.bold {
  font-weight: bold;
}

/* ===== Form Elements ===== */
input[type="file"]::-webkit-file-upload-button {
  background: var(--blue-color);
  border: 1px solid #6b7280;
  cursor: pointer;
  color: #fff;
  border-radius: 0.2em;
  padding: 0.25rem 0.5rem;
  transition: var(--transition);
}

input[type="file"]::-webkit-file-upload-button:hover {
  background: var(--blue-hover);
}

/* ===== Theme Classes ===== */
.theme-light {
  background-color: var(--bg-light);
  color: var(--text-color);
}

.theme-dark {
  background-color: var(--bg-dark);
  color: var(--text-inverse);
}

.btn-flat {
  background-color: transparent;
  box-shadow: none;
  color: inherit;
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  transition: var(--transition);
}

.btn-flat:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

/* ===== Modal Styles ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 998;
}

.modal-content {
  background-color: var(--bg-light);
  color: var(--blue-color);
  padding: 2rem;
  margin: 2rem;
  border-radius: 4px;
  width: calc(100% - 4rem);
  max-width: 500px;
  position: relative;
  z-index: 999;
}

.dark .modal-content {
  background-color: var(--bg-dark);
  color: var(--text-inverse);
}

/* ===== Responsive Adjustments ===== */
@media (max-width: 768px) {
  .nav-wrapper {
    flex-direction: column;
    gap: 1rem;
  }
  
  .nav-list {
    gap: 1rem;
    justify-content: center;
  }
  
  .background-image {
    height: 80px;
    margin: 0 2%;
    width: 96%;
  }
  
  .modal-content {
    margin: 1rem;
    width: calc(100% - 2rem);
  }
}

@media (max-width: 480px) {
  header {
    padding: 0.5rem;
  }
  
  .nav-item a {
    padding: 0.5rem;
  }
  
  .page-container {
    padding: 0 0.5rem;
  }
}