/* ==========================================================================
   GRUPO ÁLTICA - ESTILOS OFICIALES SEGÚN BRANDBOOK
   Color Primario: #043B4E
   Color Secundario: #FFC200 / #FFC000
   Gama Neutra: #F8FAFC, #FFFFFF, #4D4D4D
   ========================================================================== */

:root {
  --altica-blue: #043B4E;
  --altica-yellow: #FFC200;
  --altica-yellow-hover: #E5AF00;
  --altica-dark-gray: #4D4D4D;
  --bg-light: #F8FAFC;
  --white: #FFFFFF;
  --border-color: #E2E8F0;
  --danger: #DC2626;
  --success: #10B981;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Montserrat', 'Helvetica LT Std', sans-serif;
}

body {
  background-color: var(--bg-light);
  color: var(--altica-dark-gray);
  display: flex;
  justify-content: center;
  min-height: 100vh;
}

.screen {
  display: none;
  width: 100%;
  max-width: 600px;
  background-color: var(--bg-light);
  min-height: 100vh;
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.05);
  position: relative;
}

.screen.active {
  display: block;
}

/* Hero Header (Login) */
.hero {
  background-color: var(--altica-blue);
  padding: 50px 24px 40px 24px;
  border-bottom-left-radius: 30px;
  border-bottom-right-radius: 30px;
  text-align: center;
  color: var(--white);
}

.brand-sub {
  color: var(--altica-yellow);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  display: block;
  margin-bottom: 10px;
}

.brand-logo {
  max-width: 250px;
  height: auto;
  margin: 10px auto;
  display: block;
}

.fallback-logo {
  font-size: 38px;
  color: var(--altica-yellow);
  margin-bottom: 10px;
}

.hero-title {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  margin-top: 10px;
}

/* Formularios y Tarjetas */
.card-container {
  padding: 30px 24px;
}

.section-title {
  font-size: 20px;
  font-weight: 800;
  color: var(--altica-blue);
  text-align: center;
  margin-bottom: 20px;
  text-transform: uppercase;
}

.input-group {
  margin-bottom: 16px;
}

.input-group input {
  width: 100%;
  padding: 16px;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  background-color: var(--white);
  font-size: 15px;
  outline: none;
  transition: border-color 0.2s;
}

.input-group input:focus {
  border-color: var(--altica-blue);
}

.btn-primary {
  width: 100%;
  background-color: var(--altica-yellow);
  color: var(--altica-blue);
  border: none;
  padding: 16px;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 800;
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: background 0.2s;
}

.btn-primary:hover {
  background-color: var(--altica-yellow-hover);
}

/* Navbar / App Header */
.app-header {
  background-color: var(--altica-blue);
  color: var(--white);
  padding: 20px;
  text-align: center;
  position: relative;
}

.app-header h2 {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.5px;
}

.btn-logout {
  position: absolute;
  right: 15px;
  top: 18px;
  background: transparent;
  border: 1px solid var(--altica-yellow);
  color: var(--altica-yellow);
  padding: 6px 10px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
}

.btn-back {
  background: none;
  border: none;
  color: var(--altica-yellow);
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  margin-bottom: 8px;
  display: block;
}

.content-padding {
  padding: 20px;
}

/* Cards de Proyectos */
.grid-projects {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.project-card {
  background-color: var(--altica-blue);
  color: var(--white);
  padding: 20px;
  border-radius: 16px;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
}

.project-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.1);
}

.project-card h3 {
  font-size: 16px;
  font-weight: 700;
  text-transform: uppercase;
}

/* Acordeón y Multimedia */
.accordion-card {
  background: var(--white);
  border-radius: 16px;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
  overflow: hidden;
}

.accordion-header {
  width: 100%;
  padding: 18px 20px;
  background-color: #E2E8F0;
  border: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 700;
  font-size: 13px;
  color: var(--altica-blue);
  cursor: pointer;
  text-align: left;
}

.accordion-content {
  padding: 20px;
}

.media-section {
  margin-bottom: 20px;
}

.media-section.border-top {
  border-top: 1px solid var(--border-color);
  padding-top: 20px;
}

.media-section h3 {
  font-size: 14px;
  font-weight: 700;
  color: var(--altica-blue);
  margin-bottom: 12px;
}

.btn-audio-upload {
  display: block;
  width: 100%;
  background-color: var(--success);
  color: var(--white);
  text-align: center;
  padding: 14px;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: background-color 0.2s;
}

.btn-audio-upload:hover {
  background-color: #0d9668;
}

.btn-photo {
  display: block;
  width: 100%;
  background-color: #64748B;
  color: var(--white);
  text-align: center;
  padding: 14px;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
}

/* Listas y Miniaturas */
.media-list-container {
  margin-top: 15px;
  background: var(--bg-light);
  padding: 12px;
  border-radius: 12px;
}

.media-list-container h4 {
  font-size: 13px;
  margin-bottom: 10px;
  color: var(--altica-dark-gray);
}

.audio-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--white);
  padding: 10px;
  border-radius: 8px;
  margin-bottom: 8px;
}

.audio-actions {
  display: flex;
  gap: 6px;
}

.btn-audio-action {
  border: none;
  padding: 6px 10px;
  border-radius: 6px;
  color: var(--white);
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
}

.btn-audio-play { background-color: var(--success); }
.btn-audio-delete { background-color: var(--danger); }

.thumbnails-grid {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding-top: 15px;
}

.thumbnail-wrapper {
  position: relative;
  flex-shrink: 0;
}

.thumbnail-wrapper img {
  width: 80px;
  height: 80px;
  object-fit: cover;
  border-radius: 10px;
  border: 1px solid var(--border-color);
}

.btn-delete-photo {
  position: absolute;
  top: -5px;
  right: -5px;
  background: var(--danger);
  color: var(--white);
  border: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  font-size: 11px;
  font-weight: 900;
  cursor: pointer;
}

.btn-send-all {
  width: 100%;
  background-color: var(--altica-yellow);
  color: var(--altica-blue);
  border: none;
  padding: 16px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 800;
  cursor: pointer;
  margin-top: 15px;
}

/* Spinners y Cargas */
.hidden { display: none !important; }

.loading-box {
  text-align: center;
  padding: 20px;
  font-size: 14px;
  color: var(--altica-dark-gray);
}

.spinner {
  width: 24px;
  height: 24px;
  border: 3px solid rgba(4, 59, 78, 0.2);
  border-top-color: var(--altica-blue);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  display: inline-block;
}

.spinner.gold {
  border-top-color: var(--altica-yellow);
}

@keyframes spin {
  to { transform: rotate(360deg); }
}