:root {
  --color-primary: #ECECEC; 
  --color-secondary: #F2DA8D; 
  --color-background: #f5f6fa; 
  --color-header: #ffffff; 
  --color-button: #2E2D2C; 
  --color-button-hover: #222120; 
  --color-text: #34495e; 
  --color-border: #dcdde1; 
  --color-error: #e74c3c; 
  --color-filters-bg: #ffffff; 
  --color-media-bg: transparent; 
  --color-edit: #3498db; 
  --color-edit-hover: #2980b9; 
  --color-delete: #e74c3c; 
  --color-delete-hover: #c0392b; 
  --color-footer-bg: #333333; 
  --color-footer-text: #ffffff;
}

* { box-sizing: border-box; }

body {
  font-family: 'Montserrat', Arial, sans-serif;
  margin: 0; padding: 0;
  background-color: var(--color-background);
  display: flex; flex-direction: column;
  min-height: 100vh;
  -webkit-user-select: text; -moz-user-select: text; -ms-user-select: text;     
  user-select: text;
}

/* Estado inicial: Login visible, contenido y header ocultos */
body.not-logged-in {
  display: flex; flex-direction: column; justify-content: center;
  align-items: center; min-height: 100vh;
}

/* Estado después de iniciar sesión: Header y contenido visibles */
body.logged-in { display: flex; flex-direction: column; flex: 1; }

/* Header: Visible solo cuando está logueado */
.header {
  width: 100%; background-color: var(--color-header);
  padding: 25px 0; text-align: center;
  display: none; justify-content: center; align-items: center;
  box-shadow: none; border: none;
  position: fixed; top: 0; left: 0;
  z-index: 999;
  transition: transform 0.3s ease; transform: translateY(0);
  gap: 15px;
  flex-flow: wrap;
}
body.logged-in .header { display: flex; }
.logo { max-height: 40px; }
.header.hidden { transform: translateY(-110%); }

/* Login */
.login {
  display: flex; flex-direction: column; align-items: center;
  width: 90%; max-width: 400px;
  text-align: center; padding: 25px;
  background-color: white;  border-radius: 12px;  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
}
body.logged-in .login { display: none; }
.login h2 {margin-bottom: 25px; font-size: 26px; color: var(--color-text);
}

input, select, textarea {
  width: 100%;
  padding: 12px; margin: 12px 0;
  border: 1px solid var(--color-border); border-radius: 6px;
  font-size: 16px;
  box-sizing: border-box;
  -webkit-user-select: text; -moz-user-select: text; -ms-user-select: text; user-select: text;
}
textarea { resize: vertical; min-height: 100px; }

.btn {
  background-color: var(--color-button); color: white;
  padding: 12px 20px; border: none; border-radius: 6px; cursor: pointer; pointer-events: all;
  font-size: 16px; font-weight: bold;
  transition: background-color 0.3s ease;
  display: flex; align-items: center; justify-content: center; gap: 8px;
  width: auto;
}
.login .btn { width: 100%; margin: 20px 0 0 0; }
.btn:hover { background-color: var(--color-button-hover); }

.btn-edit {
  background-color: var(--color-edit);
  padding: 0; 
  border-radius: 6px;
  font-size: 16px;
  transition: background-color 0.3s ease;
  width: 35px; height: 35px;
}
.btn-edit:hover { background-color: var(--color-edit-hover); }

.btn-delete {
  background-color: var(--color-delete);
  padding: 0;
  color: white; font-size: 16px;
  border-radius: 6px;
  transition: background-color 0.3s ease;
  display: flex; align-items: center; justify-content: center; gap: 8px;
  width: 35px; height: 35px;
}
.btn-delete:hover { background-color: var(--color-delete-hover); }

.btn-arrow {
  background-color: var(--color-border);
  color: white;
  width: 35px; height: 35px;
  border: none; border-radius: 40px;
  cursor: pointer;
  font-size: 16px; font-weight: bold;
  transition: background-color 0.3s ease;
  display: flex; align-items: center; justify-content: center;

  &:hover { background-color: var(--color-button-hover); }
  position: absolute;
  transform: translateY(-50%);
  &.prev-btn {
     top: 330px; left: 15px;   
  }
  &.next-btn {
    top: 330px; right: 15px;  
  }

  @media (max-width: 480px) {
    
    &.prev-btn {
      position: relative;  
      top: 0; left: 0;
    }
    &.next-btn {
      position: relative;  
      top: 0; left: 0;
    }
    padding: 1px 50px;
  }
}

.content { display: none; flex: 1; }
body.logged-in .content {
  display: flex; flex-direction: column; gap: 5px;
  margin-top: 80px; width: 100%; padding: 20px;
}

.filters {
  display: flex; justify-content: space-between; align-items: center;
  background-color: var(--color-filters-bg); padding: 15px;
  border-radius: 12px; box-shadow: 0 6px 12px rgba(0,0,0,0.05);
  border: 1px solid var(--color-border);
  width: calc(100% - 30px); margin: 10px 15px; flex-wrap: wrap;
}
.filter-group { display: flex; gap: 20px; flex-wrap: wrap; }
.filter { display: flex; flex-direction: column; margin: 0 10px; }
.filters .btn { margin-left: 20px; margin-right: 30px; }
.filters label {
  margin-bottom: 5px; font-weight: 600; color: var(--color-text);
  text-align: left; margin-left: 10px; margin-right: 10px;
}

.media-section { flex-grow: 1; background-color: transparent; border: none; box-shadow: none; padding: 0; margin: 0; }
.media-section h2 { margin-bottom: 10px; color: var(--color-text); font-size: 22px; }

.media-container { display: flex; flex-wrap: wrap; gap: 40px; justify-content: center; max-width: 1600px; margin: 0 auto; }
.sample {
  position: relative; border: 1px solid var(--color-border);
  border-radius: 12px; padding: 30px 60px 50px; background-color: white;
  box-shadow: 0 8px 16px rgba(0,0,0,0.05); transition: all 0.2s;
  display: flex; flex-direction: column; gap: 20px; 
}
.sample:hover { 
  /* transform: translateY(-5px);  */
  box-shadow: 0 12px 24px rgba(0,0,0,0.1);
}
iframe {
  width: 300px; height: 600px; border: none; border-radius: 6px;
  /* Nota: el atributo sandbox se define en el HTML, esta línea en CSS no aplica atributos */
  max-width: none;
}
.sample-info { font-size: 15px; color: var(--color-text); width: 300px; }
.sample-info h4 { margin: 0 0 10px 0; font-size: 18px; color: var(--color-text); }
.sample-actions { position: absolute; top: 12px; right: 12px; display: flex; flex-direction: column; gap: 5px; }

.footer {
  background-color: var(--color-footer-bg); color: var(--color-footer-text);
  text-align: center; padding: 20px 10px; width: 100%; font-size: 14px; margin-top: auto;
}
body.not-logged-in .footer { display: none; }

@media (max-width: 1024px) { .media-container { margin: 0; } }
@media (max-width: 768px) {
  body.logged-in .content { padding: 10px; }
  .filters { padding: 15px; margin: 10px 15px; flex-direction: column; align-items: flex-start; }
  .filter-group { gap: 20px; }
  .filters .btn { margin-top: 10px; width: 100%; margin-left: 0; margin-right: 30px; }
  /* .media-container { flex-wrap: nowrap; overflow-x: auto; justify-content: flex-start; margin: 0; } */
  .sample { flex: 0 0 auto;  flex-direction: row; flex-flow: wrap; max-width: 420px; justify-content: space-between;}
  /* iframe { width: 640px; height: 370px; } */
}
@media (max-width: 480px) {
  .sample {padding: 5px 10px 50px; max-width: 320px;}
  .sample-actions { position: relative; flex-direction: row; top: 0px; right: 0px; padding-bottom: 5px; justify-content: end;}
}

.modal {
  display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  background-color: rgba(0, 0, 0, 0.5); justify-content: center; align-items: center; z-index: 1000;
}
.modal-content {
  background-color: white; padding: 25px; border-radius: 12px;
  box-shadow: 0 8px 16px rgba(0,0,0,0.1); width: 400px; position: relative;
  -webkit-user-select: text; -moz-user-select: text; -ms-user-select: text; user-select: text;
}
.close-modal {
  background-color: var(--color-error); color: white; border: none; border-radius: 6px;
  padding: 10px 18px; cursor: pointer; font-size: 16px; position: absolute; top: 15px; right: 15px;
  transition: background-color 0.3s ease;
}
.close-modal:hover { background-color: darkred; }
.modal-content h3 { margin-bottom: 20px; color: var(--color-text); }
.specs-img-container{
    height: 600px;
    width: 300px;
    min-height: fit-content;
    display: flex; align-items: center; justify-content: center;
    justify-self: center;
}
#specsImage {
    width: 100%;
}
#status { margin-top: 25px; color: var(--color-error); font-weight: bold; text-align: center; }

/* Header: left/right button linking between versions */
.vertical-link {
  position: absolute;
  right: 15px;
  top: 50%;
  height: 44px;
  transform: translateY(-50%);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: #222;
  text-decoration: none;
  background: #f0f0f0;
  border: 1px solid #e6e6e6;
  border-radius: 999px;
  padding: 8px 22px;
  transition: background-color 0.2s ease, box-shadow 0.2s ease;

  @media (max-width: 768px) {
    position: relative;
    transform: translateY(0);
    right: 0;
  }
}
.vertical-link:hover {
  background: #e8e8e8;
  box-shadow: 0 0px 10px rgba(0,0,0,0.15);
}
.vertical-icon {
  width: 27px;
  height: 16px;
  background: #000;
  border-radius: 2px;
  display: inline-block;
}