:root {
  --color-bg-main: #fcfcf9;
  --color-text-main: #122;
  --color-accent: #21808d;
  --color-accent-light: #afe5eb;
  --color-card: #fff;
  --color-border: #d0d5da;
  --color-filter-bg: #f4f6fa;
  --color-header-bg: #e7f7fa;
  --color-btn: #21808d;
  --color-btn-hover: #176471;
  --color-disabled: #c7c7c7;
  --color-form-bg: #f5f7fa;
  --color-text-secondary: #345;
  --color-text-label: #435;
  --color-text-help: #657;
  --color-text-counter: #066;
  --color-btn-text: #fff;
  --color-btn-secondary-bg: #6c757d;
  --color-btn-secondary-hover-bg: #5a6268;
  --color-btn-danger-bg: #dc3545;
  --color-btn-danger-hover-bg: #c82333;
  --color-shadow: rgba(33, 128, 141, 0.05);
}

/* Tema Oscuro */
[data-bs-theme="dark"] {
  --color-bg-main: #121212;
  --color-text-main: #e0e0e0;
  --color-accent: #4dd0e1; /* Un turquesa más brillante para el modo oscuro */
  --color-accent-light: rgba(77, 208, 225, 0.15);
  --color-card: #1e1e1e;
  --color-border: #3a3a3a;
  --color-filter-bg: #242424;
  --color-header-bg: #1a2a2d;
  --color-btn: #4dd0e1;
  --color-btn-hover: #93e5ee; /* Color de hover más claro para mayor contraste */
  --color-disabled: #4f4f4f;
  --color-form-bg: #242424;
  --color-text-secondary: #a0a0a0;
  --color-text-label: #c0c0c0;
  --color-text-help: #888;
  --color-text-counter: #4dd0e1;
  --color-btn-text: #121212; /* Texto oscuro para botones brillantes */
  --color-btn-secondary-bg: #4f4f4f;
  --color-btn-secondary-hover-bg: #686868; /* Color de hover más claro para mayor contraste */
  --color-btn-danger-bg: #e53935;
  --color-btn-danger-hover-bg: #f44336;
  --color-shadow: rgba(0, 0, 0, 0.2);
}

body {
  background: var(--color-bg-main);
  color: var(--color-text-main);
  font-family: 'Segoe UI', Arial, sans-serif;
  margin: 0;
  padding: 0;
}

.container {
  max-width: 1100px;
  margin: auto;
  padding: 24px;
}

.header {
  background: var(--color-header-bg);
  border-radius: 10px;
  padding: 16px 30px;
  margin-bottom: 20px;
  text-align: center;
}

.subtitle {
  font-size: 1rem;
  font-weight: 400;
  color: var(--color-text-secondary);
}

/* Estilos para los formularios */
.form-section {
  background: var(--color-form-bg);
  border-radius: 10px;
  padding: 22px;
  margin-bottom: 22px;
}

.form-container {
  max-width: 800px;
  margin: 0 auto;
}

.form-container h2 {
  color: var(--color-accent);
  margin-top: 0;
  margin-bottom: 20px;
  font-size: 1.4rem;
}

.form-row {
  display: flex;
  gap: 16px;
  margin-bottom: 16px;
}

.form-group {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.form-label {
  font-size: 1rem;
  margin-bottom: 4px;
  color: var(--color-text-label);
  font-weight: 600;
  display: block;
}

.form-control {
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: 5px;
  font-size: 1rem;
  width: 100%;
}

.form-control:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 1px;
}

.form-help {
  font-size: 0.85rem;
  color: var(--color-text-help);
  margin-top: 4px;
}

.form-buttons {
  display: flex;
  gap: 10px;
  margin-top: 16px;
}

.btn {
  background: var(--color-btn);
  color: var(--color-btn-text);
  border: none;
  border-radius: 6px;
  padding: 8px 16px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}

.btn:hover {
  background: var(--color-btn-hover);
  color: var(--color-btn-text); /* Asegura que el color del texto no cambie */
}

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

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

.btn-danger {
  background: var(--color-btn-danger-bg);
  color: #fff; /* El texto siempre será blanco para este botón */
}

.btn-danger:hover {
  background: var(--color-btn-danger-hover-bg);
}

.filters-section {
  background: var(--color-filter-bg);
  border-radius: 10px;
  padding: 18px 22px;
  margin-bottom: 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.filters-container {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    align-items: flex-end;
}

.search-container {
    flex-grow: 1;
    min-width: 220px;
}

.search-input {
    padding: 8px 12px;
    border: 1px solid var(--color-border);
    border-radius: 5px;
    font-size: 1rem;
    width: 100%;
    max-width: 280px;
}

.level-filters {
    flex-grow: 1;
}

.level-filters .checkbox-container {
    flex-direction: row;
    gap: 15px;
}

.tech-filters {
    width: 100%;
}

#tech-checkboxes {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 5px;
}

.filter-group {
    min-width: 140px;
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.filter-title {
    font-size: 0.92rem;
    color: var(--color-accent);
    margin-bottom: 2px;
    font-weight: 600;
    margin-top: 0;
}

.checkbox-container {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.96rem;
    padding: 1px 0;
    cursor: pointer;
}

.main-btn {
    background: var(--color-btn);
    color: var(--color-btn-text);
    border: none;
    border-radius: 6px;
    padding: 7px 17px;
++ b/e:\Webmaster\DEV\DevColeccionesURL\SPS KursDev\SPS Kurs_autofuhlen\style.css
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    margin-left: 28px;
    transition: background 0.2s;
}
.main-btn:hover,
.card-btn:hover {
    background: var(--color-btn-hover);
}
.main-btn:disabled,
.card-btn:disabled {
    background: var(--color-disabled);
    cursor: not-allowed;
}

.counter {
    font-size: 1.04rem;
    font-weight: 500;
    margin: 14px 0;
    color: var(--color-text-counter);
}

#courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

/* Estilos para la vista de colecciones */
#collections-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.collection-card {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-left: 5px solid var(--color-accent);
    border-radius: 8px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    box-shadow: var(--color-shadow);
    transition: transform 0.2s, box-shadow 0.2s;
}

.collection-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 15px var(--color-shadow);
}

.collection-card-header {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--color-accent);
}

.collection-card-description {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    flex-grow: 1; /* Empuja los botones hacia abajo */
}

.collection-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.course-card {
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: 9px;
    padding: 23px 17px 13px 17px;
    box-shadow: 0 2px 8px var(--color-shadow), 0 0px 0px var(--color-card);
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.course-card.card-visited {
    border: 2px solid var(--color-accent);
    box-shadow: 0 4px 12px rgba(33, 128, 141, 0.15);
    opacity: 0.9;
}

.course-card.card-last-visited {
    border: 3px solid var(--color-btn-hover); /* Un color más vibrante para la última visitada */
    box-shadow: 0 0 15px var(--color-btn-hover); /* Sombra más pronunciada */
    opacity: 1; /* Asegurarse de que no tenga opacidad reducida */
}

.card-title {
    font-size: 1.08rem;
    font-weight: bold;
    margin-bottom: 4px;
    color: var(--color-accent);
}

.card-channel {
    font-size: 1.01rem;
    color: var(--color-text-main);
    font-weight: 500;
}

.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.tag-label {
    background: var(--color-accent-light);
    color: var(--color-accent);
    border-radius: 5px;
    padding: 2px 10px;
    font-size: 0.95rem;
    font-weight: 600;
}

.card-metadata {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 16px; /* Espacio vertical y horizontal */
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

.card-metadata span {
    display: flex;
    align-items: center;
    gap: 5px;
}

.card-metadata .bi {
    color: var(--color-accent);
}

.card-level {
    font-size: 0.94rem;
    font-weight: 600;
    color: var(--color-btn-hover);
}

.card-type {
  padding: 2px 10px;
  border-radius: 5px;
  font-size: 0.9rem;
  font-weight: 700;
  text-align: center;
  width: fit-content;
  border: 1px solid;
}

.card-type-playlist {
  background-color: #e0f7fa;
  color: #00796b;
  border-color: #00796b;
}

.card-type-video {
  background-color: #fff3e0;
  color: #f57c00;
  border-color: #f57c00;
}

.card-btns {
    display: flex;
    gap: 10px;
    margin-top: 8px;
}

.card-btn {
    background: var(--color-btn);
    color: var(--color-btn-text);
    border: none;
    border-radius: 6px;
    padding: 6px 11px;
    font-size: 0.97rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
    color: var(--color-btn-text); /* Asegura que el color del texto no cambie */
}

.card-btn:focus,
.main-btn:focus {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

.no-courses-message {
  text-align: center;
  padding: 40px 20px;
  color: var(--color-text-secondary);
  font-style: italic;
  font-size: 1.1rem;
}

/* Responsive grid for mobile */
@media (max-width: 600px) {
  .container {
    padding: 8px;
  }
  .form-row {
    flex-direction: column;
    gap: 10px;
  }
  .courses-grid {
    grid-template-columns: 1fr;
  }
  .filters-section,
  .header,
  .form-section {
    padding: 12px 8px;
  }
}

/* Estilos para el Modal de Edición */
.modal-content {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 10px;
}

.modal-header {
  border-bottom: 1px solid var(--color-border);
}

.modal-footer {
  border-top: 1px solid var(--color-border);
  background-color: var(--color-filter-bg);
}

/* Estilo para el elemento que se está arrastrando */
.sortable-ghost {
  opacity: 0.4;
  background: var(--color-accent-light);
}

/* Estilos personalizados para el Acordeón */
.accordion-item {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
}

.accordion-button {
  background-color: var(--color-card);
  color: var(--color-text-main);
}

.accordion-button:not(.collapsed) {
  background-color: var(--color-accent-light);
  color: var(--color-accent);
  box-shadow: inset 0 -1px 0 var(--color-border);
}

.accordion-button:focus {
  box-shadow: none;
  border-color: transparent;
}

/* Ajuste del color de la flecha del acordeón para ambos temas */
[data-bs-theme="dark"] .accordion-button::after {
  --bs-accordion-btn-icon: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%234dd0e1'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
  --bs-accordion-btn-active-icon: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%234dd0e1'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
}