/* Sección Hero */
.hero-section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 80px 24px;
  text-align: center;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  background-color: var(--blue-50);
  border: 1px solid var(--blue-200);
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  color: var(--blue-700);
  margin-bottom: 24px;
}

.hero-title {
  font-size: 56px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--slate-900);
  margin-bottom: 20px;
}

.hero-title-gradient {
  background: linear-gradient(
    135deg,
    var(--indigo-600) 0%,
    var(--violet-500) 100%
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-field {
  border-radius: 20px;
  background-color: white;
  padding: 20px;
  text-align: left;
  box-shadow: 5px 5px 10px  grey;
}

.hero-field > * {
  margin: 5px;
}

.hero-input {
  border-radius: 10px;
  padding: 5px;
  width: 50%;
  height: auto;
  padding: 10px 15px;
  font-size: 16px;
}

.hero-checkbox {
  border-radius: 20px;
  border: 3px solid grey;
  background-color: grey;
}

.hero-label {
  font-size: 20px;
  font-weight: 1200px;
}

.hidden {
  display: none;
}

.categorias-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
  margin-top: 30px;
  width: 100%;
}

.categorias-item {
  display: flex;
  flex-direction: column;
  align-items: center;

  max-width: 130px;
  flex: 1 1 auto;
  max-width: 180px;

  background-color: #f8f9fa;
  padding: 15px;
  border-radius: 10px;
  border: 1px solid #e2e8f0;
  box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.categorias-item label {
  margin-bottom: 15px;
}

.input-centrado {
  width: 80px !important;
  text-align: center;
}

.btn-nueva-regla {
  background: none;
  border: none;
  padding: 0;

  color: #2c3e50;
  font-size: 20px;
  font-weight: bold;
  cursor: pointer;
  line-height: 1;
}

.btn-nueva-regla:hover {
  color: #3498db;
}

.btn-borrar-regla {
  background: none;
  border: none;
  padding: 0;

  color: #2c3e50;
  font-size: 20px;
  font-weight: bold;
  cursor: pointer;
  line-height: 1;
}

#contenedorReglas {
  border: 1px solid #7895ba;
  border-radius: 8px;
}

.btn-borrar-regla:hover {
  color: #e74c3c;
}

.input-reglas {
  border: none;
  background: none;
  flex: 1;
  min-width: 0;

  height: auto;
  font-size: 16px;
  
}

.fila-regla {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 15px;

  width: 100%;
  padding: 10px 15px;
  box-sizing: border-box;
}

.file-regla:nth-child(odd) {
  background-color: #ffffff;
}

.fila-regla:nth-child(even) {
  background-color: #f0f4f8;
}

.btn-submit {
  display: block;
  margin: 30px auto auto auto;
  font-size: 20px;
  padding: 7px 10px;
  border-radius: 10px;
  background-color: #9999ff;
}

.btn-submit:active {
  background-color: #4d4dff;
}

.btn-symbol {
  background: none;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  cursor: pointer;
  color: #2c3e50;
  box-shadow: 0 2px 4px rgba(0,0,0,0.05);
  transition: all 0.2s ease-in-out;

  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-description {
  font-size: 18px;
  font-weight: 400;
  color: var(--slate-600);
  line-height: 1.6;
  margin-bottom: 40px;
}

.hero-search {
  position: relative;
  max-width: 600px;
  margin: 0 auto;
}

.search-icon {
  position: absolute;
  left: 20px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--slate-400);
}

.search-input {
  width: 100%;
  padding: 16px 20px 16px 52px;
  font-size: 15px;
  font-family: "Inter", sans-serif;
  border: 2px solid var(--slate-200);
  border-radius: 12px;
  outline: none;
  transition: all 0.2s;
}

.search-input:focus {
  border-color: var(--blue-500);
  box-shadow: 0 0 0 4px var(--blue-100);
}

.search-input::placeholder {
  color: var(--slate-400);
}

/* Sección de cursos populares */
.popular-section {
  max-width: 1200px;
  margin: 60px auto;
  padding: 0 24px;
}

.section-title {
  font-size: 24px;
  font-weight: 600;
  color: var(--slate-900);
  margin-bottom: 32px;
  padding-left: 16px;
  border-left: 4px solid var(--blue-600);
}

/* Grid de cursos */
.courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 24px;
}

.course-card-link {
  text-decoration: none;
  color: inherit;
  display: block;
}

.course-card {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 24px;
  background-color: #ffffff;
  border: 1px solid var(--slate-200);
  border-radius: 12px;
  transition: all 0.2s;
  cursor: pointer;
  min-height: 170px;
}

.course-card:hover {
  border-color: var(--blue-500);
  box-shadow: 0 4px 12px var(--blue-100);
  transform: translateY(-2px);
}

.course-icon {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  margin-top: -2px;
}

.course-icon svg {
  width: 40px;
  height: 40px;
}

.course-info {
  flex: 1;
}

.course-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--slate-900);
  margin-bottom: 4px;
}

.course-code {
  font-size: 14px;
  font-weight: 500;
  color: var(--slate-600);
  margin-bottom: 8px;
}

.course-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.meta-item {
  font-size: 12px;
  font-weight: 500;
  color: var(--slate-600);
  background-color: var(--slate-100);
  padding: 4px 10px;
  border-radius: 6px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.course-students {
  font-size: 13px;
  font-weight: 400;
  color: var(--slate-500);
}

/* Footer */
.footer {
  background-color: #ffffff;
  border-top: 1px solid var(--slate-200);
  padding: 32px 0;
  margin-top: 32px;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  gap: 24px;
}

.footer-penguin-icon {
  height: 228px;
  width: auto;
  object-fit: contain;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 16px;
}

.footer-brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--slate-900);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.brand-subtitle {
  font-size: 12px;
  font-weight: 400;
  color: var(--slate-500);
}

.footer-separator {
  width: 1px;
  height: 32px;
  background-color: var(--slate-200);
}

.footer-love p {
  font-size: 13px;
  font-weight: 500;
  color: var(--slate-600);
  margin: 0;
}

.heart {
  color: var(--rose-500);
}

/* Responsive landing */
@media (max-width: 768px) {
  .hero-title {
    font-size: 40px;
  }

  .hero-description {
    font-size: 16px;
  }

  .courses-grid {
    grid-template-columns: 1fr;
  }
}