/* ====== ESTILOS GLOBALES OPTIMIZADOS ====== */

:root {
  --color-primary: #c20e1a;
  --color-primary-dark: #9b1d1c;
  --color-primary-darker: #841f1c;
  --color-primary-bg: #3f1517;
  --color-text: #354152;
  --color-text-light: #495565;
  --color-border: #e5e7eb;
  --color-bg-light: #f9fafb;
  --color-blue: #3d5aa2;
  --color-green: #599876;
  --spacing: 32px;
  --gap-small: 16px;
  --gap-medium: 24px;
  --gap-large: 48px;
}

/* ====== LAYOUT GENERAL ====== */
.page {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background-color: #fff;
}

.page main {
  flex: 1;
}

/* ====== HEADER ====== */
.header {
  background-color: var(--color-primary);
  padding: 24px var(--spacing);
  box-shadow: 0px 4px 6px -4px rgba(0, 0, 0, 0.1), 0px 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 24px;
}

.logo {
  width: 45px;
  height: 64px;
  background-image: url(./img/image-logo-univalle.png);
  background-size: cover;
  background-position: center;
  flex-shrink: 0;
}

.header-text h1 {
  margin: 0;
  color: #fff;
  font-size: 16px;
  font-weight: 400;
  line-height: 24px;
}

.header-text p {
  margin: 4px 0 0;
  color: rgba(255, 255, 255, 0.9);
  font-size: 18px;
  font-weight: 400;
  line-height: 27px;
}

.header-menu {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  cursor: pointer;
}

.header-menu img {
  width: 100%;
  height: auto;
}

/* Botón de autenticación en el header */
.header-auth {
  margin-left: 12px;
  display: flex;
  align-items: center;
}

.auth-btn {
  display: inline-block;
  padding: 8px 14px;
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,0.18);
  border-radius: 6px;
  text-decoration: none;
  font-weight: 700;
}

.auth-btn:hover {
  background: rgba(255,255,255,0.06);
  transform: translateY(-1px);
}

.user-menu {
  display: none;
  gap: 8px;
  align-items: center;
}

.user-menu a {
  color: #fff;
  text-decoration: none;
  padding: 6px 10px;
  border-radius: 6px;
  border: 1px solid rgba(255,255,255,0.12);
}

.user-menu a:hover { background: rgba(255,255,255,0.06); }

/* ====== SECCIÓN BIENVENIDA ====== */
.section-welcome {
  padding: 64px var(--spacing);
  background: linear-gradient(180deg, rgba(249, 250, 251, 1) 0%, rgba(255, 255, 255, 1) 100%);
  text-align: center;
}

.section-welcome h2 {
  margin: 0 0 32px;
  color: var(--color-primary);
  font-size: 20px;
  font-weight: 500;
}

.section-welcome p {
  max-width: 768px;
  margin: 0 auto;
  color: var(--color-text);
  font-size: 16px;
  line-height: 26px;
}

/* ====== SECCIÓN CARACTERÍSTICAS ====== */
.section-features {
  padding: 64px var(--spacing);
  background-color: #fff;
}

.section-features > h2 {
  text-align: center;
  margin: 0 0 48px;
  color: var(--color-primary-darker);
  font-size: 16px;
  font-weight: 400;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
  max-width: 1200px;
  margin: 0 auto;
}

.feature-card {
  padding: 32px;
  background-color: #fff;
  border: 2px solid var(--color-border);
  border-radius: 10px;
  transition: box-shadow 0.3s ease, transform 0.3s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.feature-card:hover {
  box-shadow: 0px 10px 25px rgba(0, 0, 0, 0.08);
  transform: translateY(-4px);
}

.feature-card .feature-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background-color: var(--icon-bg, #999);
  border-radius: 10px;
  margin-bottom: 24px;
}

.feature-card .feature-icon img {
  width: 28px;
  height: 28px;
  object-fit: contain;
  display: block;
}

.feature-card .feature-icon-img {
  width: 56px;
  height: 56px;
  margin-bottom: 24px;
  display: block;
  object-fit: contain;
}

.feature-card h3 {
  margin: 0 0 16px;
  color: var(--color-primary-bg);
  font-size: 16px;
  font-weight: 700;
}

.feature-card p {
  margin: 0;
  color: var(--color-text-light);
  font-size: 16px;
  line-height: 26px;
}

/* ====== SECCIÓN INFORMACIÓN ====== */
.section-info {
  padding: 64px var(--spacing);
  background-color: var(--color-bg-light);
}

.info-box {
  max-width: 900px;
  margin: 0 auto;
  padding: 32px;
  background-color: #fff;
  border-left: 4px solid var(--color-primary);
  border-radius: 10px;
  box-shadow: 0px 1px 2px -1px rgba(0, 0, 0, 0.1), 0px 1px 3px rgba(0, 0, 0, 0.1);
}

.info-box h2 {
  margin: 0 0 24px;
  color: var(--color-primary-darker);
  font-size: 16px;
  font-weight: 400;
}

.info-box ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.info-box li {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.info-box span {
  color: var(--color-primary);
  font-weight: bold;
  flex-shrink: 0;
}

.info-box p {
  margin: 0;
  color: var(--color-text);
  font-size: 16px;
  line-height: 24px;
}

/* ====== FOOTER ====== */
footer {
  background-color: var(--color-primary-bg);
  color: rgba(255, 255, 255, 0.9);
  padding: 32px var(--spacing);
  text-align: center;
}

footer p {
  margin: 0;
  font-size: 16px;
  line-height: 24px;
}

footer p:first-child {
  font-size: 16px;
}

footer p:last-child {
  margin-top: 8px;
  font-size: 18px;
  color: rgba(255, 255, 255, 0.7);
}

/* ====== RESPONSIVO - TABLETS ====== */
@media (max-width: 768px) {
  :root {
    --spacing: 20px;
  }

  .header-content {
    flex-direction: column;
    align-items: flex-start;
  }

  .header-menu {
    align-self: flex-end;
    margin-top: -48px;
  }

  .section-welcome,
  .section-features,
  .section-info,
  footer {
    padding: 40px var(--spacing);
  }

  .section-welcome h2,
  .section-features > h2 {
    font-size: 18px;
    margin-bottom: 24px;
  }

  .features-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .feature-card {
    padding: 24px;
  }

  .info-box {
    padding: 24px;
  }

  .info-box li {
    gap: 12px;
  }
}

/* ====== RESPONSIVO - MÓVILES ====== */
@media (max-width: 480px) {
  :root {
    --spacing: 16px;
  }

  .header {
    padding: 16px var(--spacing);
  }

  .header-text h1 {
    font-size: 14px;
  }

  .header-text p {
    font-size: 16px;
  }

  .section-welcome,
  .section-features,
  .section-info,
  footer {
    padding: 32px var(--spacing);
  }

  .section-welcome h2,
  .section-features > h2,
  .info-box h2 {
    font-size: 16px;
    margin-bottom: 20px;
  }

  .section-welcome p,
  .feature-card p,
  .info-box p {
    font-size: 14px;
    line-height: 24px;
  }

  .features-grid {
    gap: 16px;
  }

  .feature-card {
    padding: 20px;
  }

  .feature-card h3 {
    font-size: 15px;
    margin-bottom: 12px;
  }

  .info-box {
    padding: 16px;
    border-left-width: 3px;
  }

  footer p {
    font-size: 14px;
  }

  footer p:last-child {
    font-size: 15px;
  }
}

/* ====== MENÚ DESPLEGABLE ====== */
.header-menu {
  position: relative;
}

.menu-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  display: none;
  flex-direction: column;
  background-color: #fff;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  box-shadow: 0px 10px 25px rgba(0, 0, 0, 0.15);
  min-width: 180px;
  z-index: 1000;
  margin-top: 8px;
  overflow: hidden;
}

.menu-dropdown.active {
  display: flex;
}

.menu-dropdown a {
  padding: 12px 16px;
  color: var(--color-text);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: background-color 0.2s ease, color 0.2s ease;
  border-bottom: 1px solid var(--color-border);
}

.menu-dropdown a:last-child {
  border-bottom: none;
}

.menu-dropdown a:hover {
  background-color: var(--color-primary);
  color: #fff;
}

/* ====== ACCESIBILIDAD ====== */
@media (prefers-reduced-motion: reduce) {
  .feature-card {
    transition: none;
  }
}

@media (prefers-color-scheme: dark) {
  .page {
    background-color: #1a1a1a;
  }

  .feature-card {
    background-color: #2a2a2a;
    border-color: #444;
  }

  .info-box {
    background-color: #2a2a2a;
  }

  footer {
    background-color: #0a0a0a;
  }
}

/* ==========================
   Componentes de páginas (unificados)
   Reglas moved from inline <style> blocks across pages
   ========================== */

/* Upload page */
.upload-container {
  max-width: 900px;
  margin: 40px auto;
  padding: 24px;
  background: #fff;
  border-radius: 12px;
}
.field { margin-bottom: 12px; }
label { display: block; font-weight: 600; margin-bottom: 6px; }
input[type="text"], input[type="password"], select {
  width: 100%; padding: 10px; border: 1px solid var(--color-border); border-radius: 6px;
}
.actions { display: flex; gap: 12px; align-items: center; margin-top: 12px; }
.btn { background: var(--color-primary); color: #fff; padding: 10px 16px; border-radius: 8px; text-decoration: none; border: none; cursor: pointer; }
.note { color: var(--color-text-light); font-size: 14px; }
.progress-wrapper { margin-top: 12px; display: none; }
.progress { width: 100%; height: 12px; background: #eee; border-radius: 6px; overflow: hidden; margin-bottom: 6px; }
.progress>span { display: block; height: 100%; width: 0%; background: var(--color-primary); transition: width 0.15s ease; }
.progress-text { font-size: 13px; color: var(--color-text-light); text-align: right; }
.drop-zone { border: 2px dashed rgba(52,58,64,0.12); border-radius: 8px; padding: 20px; text-align: center; color: var(--color-text-light); cursor: pointer; background: linear-gradient(180deg, rgba(255,255,255,0.6), rgba(250,250,250,0.9)); }
.drop-zone.dragover { background-color: #fff8f8; border-color: var(--color-primary); color: var(--color-primary); }
.file-list { margin-top: 12px; font-size: 14px; color: var(--color-text-light); }
.file-list li { margin-bottom: 6px; }

/* Explorer panel */
.explorer { margin-top: 20px; background: #fff; border: 1px solid var(--color-border); border-radius: 8px; padding: 12px; }
.explorer { display: none; }
.explorer-actions { margin-top:12px; display:flex; gap:8px; align-items:center; }

/* Ensure feature-card anchors inherit styling so we can remove inline text-decoration */
.feature-card { text-decoration: none; color: inherit; }
.feature-card > a { text-decoration: none; color: inherit; display: flex; flex-direction: column; align-items: center; width: 100%; }
.explorer .breadcrumb { font-size: 13px; color: var(--color-text-light); margin-bottom: 8px; }
.explorer-list { display: grid; grid-template-columns: 1fr; gap: 8px; max-height: 320px; overflow: auto; }
.explorer-item { display: flex; justify-content: space-between; align-items: center; padding: 8px 10px; border-radius: 6px; cursor: pointer; }
.explorer-item:hover { background: #fbfbfb; }
.explorer-item .meta { color: var(--color-text-light); font-size: 13px; }

/* Herramientas */
.tools-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 24px; max-width: 1100px; margin: 0 auto; padding-top: 20px; }
.tool-card { background: #fff; border: 2px solid var(--color-border); border-radius: 10px; padding: 20px; text-align: center; text-decoration: none; color: inherit; transition: transform 0.2s ease, box-shadow 0.2s ease; display: flex; flex-direction: column; align-items: center; gap: 10px; }
.tool-card:hover { transform: translateY(-6px); box-shadow: 0 10px 30px rgba(0,0,0,0.08); }
.tool-icon { width: 72px; height: 72px; border-radius: 12px; display: flex; align-items: center; justify-content: center; background-color: var(--color-primary); color: #fff; font-size: 28px; }
.section-tools { padding: 48px var(--spacing); background-color: #fff; }
.section-tools>h2 { text-align: center; margin: 0 0 24px; color: var(--color-primary-darker); font-size: 24px; font-weight: 600; }
.section-info .info-box { background: transparent; padding: 18px 18px 6px 18px; }
.section-tools .section-info { background-color: #f8fafc; padding: 32px 0; }
.section-tools .info-box { max-width: 1100px; margin: 0 auto; }
.section-info .categoria { margin-bottom: 18px; padding: 12px 14px; border-radius: 8px; background-color: #ffffff; border: 1px solid rgba(0,0,0,0.04); box-shadow: 0 6px 18px rgba(16,24,40,0.03); }
.section-info .categoria h3 { color: var(--color-primary); font-weight: 700; margin: 0 0 8px 0; font-size: 18px; letter-spacing: 0.2px; }
.section-info .categoria ul { margin-left: 18px; color: var(--color-text-light); }
.section-info .categoria li { 
  line-height: 1.8; 
  margin-bottom: 16px; 
  padding-left: 8px;
  border-left: 3px solid #e8e8e8;
}
.section-info .categoria strong, .section-info .categoria b { 
  color: #8b1a1a; 
  font-weight: 700; 
  white-space: nowrap;
  display: inline;
}
.section-info #tools-info-heading { color: var(--color-primary); font-weight: 700; font-size: 20px; margin: 0 0 12px 0; display: inline-block; padding-bottom: 6px; border-bottom: 3px solid rgba(194,14,26,0.10); }
.logo-link { text-decoration: none; display:flex; align-items:center; gap:16px; }

/* Proyectos */
.projects-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 32px; max-width: 1200px; margin: 0 auto; }
.project-card { padding: 32px; background-color: #fff; border: 2px solid var(--color-border); border-radius: 10px; transition: box-shadow 0.3s ease, transform 0.3s ease; display: flex; flex-direction: column; align-items: center; text-align: center; text-decoration: none; color: inherit; cursor: pointer; }
.project-card:hover { box-shadow: 0px 10px 25px rgba(0,0,0,0.08); transform: translateY(-4px); }
.project-card .project-icon { display: flex; align-items: center; justify-content: center; width: 80px; height: 80px; background-color: var(--icon-bg, #999); border-radius: 10px; margin-bottom: 24px; }
.project-card .project-icon img { width: 48px; height: 48px; object-fit: contain; display: block; }
.project-card h3 { margin: 0 0 16px; color: var(--color-primary-bg); font-size: 18px; font-weight: 700; }
.project-card p { margin: 0; color: var(--color-text-light); font-size: 14px; line-height: 20px; }
.section-projects { padding: 64px var(--spacing); background-color: #fff; }
.section-projects > h2 { text-align: center; margin: 0 0 48px; color: var(--color-primary-darker); font-size: 28px; font-weight: 600; }
.home-btn { position: fixed; bottom: 30px; right: 30px; width: 56px; height: 56px; background-color: var(--color-primary); border: none; border-radius: 50%; cursor: pointer; display: flex; align-items: center; justify-content: center; font-size: 24px; color: white; box-shadow: 0px 4px 12px rgba(194,14,26,0.3); transition: background-color 0.3s ease, transform 0.2s ease; text-decoration: none; z-index: 999; }
.home-btn:hover { background-color: var(--color-primary-dark); transform: scale(1.1); }
.logo { cursor: pointer; transition: opacity 0.2s ease; }
.logo:hover { opacity: 0.8; }

@media (max-width: 768px) {
  .projects-grid { gap: 16px; }
  .project-card { padding: 20px; }
  .project-card h3 { font-size: 16px; }
  .home-btn { bottom: 20px; right: 20px; width: 48px; height: 48px; font-size: 20px; }
}

/* Group pages */
.group-container { max-width: 900px; margin: 0 auto; padding: 40px 20px; text-align: center; }
.group-container h2 { color: var(--color-primary); margin-bottom: 20px; }
.group-container p { color: var(--color-text-light); font-size: 16px; line-height: 1.6; }
.back-link { display: inline-block; margin-top: 30px; padding: 12px 24px; background-color: var(--color-primary); color: white; text-decoration: none; border-radius: 6px; font-weight: 500; transition: background-color 0.3s ease; }
.back-link:hover { background-color: var(--color-primary-dark); }

/* spacing for consecutive back links */
.back-link + .back-link { margin-left: 10px; }

/* misc helpers */
#fileInput { display: none; }

/* Python info page */
.python-page { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; }
.python-page body { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); min-height: 100vh; }
.python-container { background-color: #fff; border-radius: 12px; box-shadow: 0px 10px 40px rgba(0,0,0,0.2); max-width: 600px; width: 100%; padding: 40px; }
.python-page header { display:flex; justify-content: space-between; align-items:center; margin-bottom:30px; border-bottom:3px solid #667eea; padding-bottom:20px; }
.home-link { display: inline-block; padding: 10px 20px; background-color: #667eea; color: white; text-decoration: none; border-radius: 6px; font-weight: 500; transition: background-color 0.3s ease; }
.home-link:hover { background-color: #764ba2; }
.version-badge { display: inline-block; background-color: #667eea; color: white; padding: 8px 16px; border-radius: 20px; font-weight: 600; margin-right: 10px; margin-bottom: 10px; }
.info-section h2 { color: #667eea; font-size: 16px; font-weight: 600; margin-bottom: 10px; text-transform: uppercase; letter-spacing: 1px; }
.info-box { background-color: #f5f5f5; padding: 15px; border-left: 4px solid #667eea; border-radius: 4px; font-size: 14px; color: #555; line-height: 1.6; font-family: 'Courier New', monospace; word-break: break-word; }
.features { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; }
.feature { background-color: #f9f9f9; padding: 12px; border-radius: 6px; border: 1px solid #e0e0e0; }
.feature strong { color: #667eea; display: block; margin-bottom: 5px; }
.feature p { font-size: 13px; color: #666; }
.python-foot { margin-top: 30px; padding-top: 20px; border-top: 1px solid #e0e0e0; text-align: center; font-size: 12px; color: #999; }

/* Estilos para botones de autenticación en la nube */
.cloud-card {
  position: relative;
  display: flex;
  flex-direction: column;
}

.cloud-buttons {
  display: flex;
  gap: 12px;
  margin-top: 16px;
  flex-wrap: wrap;
}

.btn-login, .btn-register {
  flex: 1;
  min-width: 120px;
  padding: 10px 16px;
  border: none;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  text-align: center;
  transition: all 0.3s ease;
}

.btn-login {
  background-color: #8b1a1a;
  color: white;
}

.btn-login:hover {
  background-color: #6b1515;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(139, 26, 26, 0.3);
}

.btn-register {
  background-color: transparent;
  color: #8b1a1a;
  border: 2px solid #8b1a1a;
}

.btn-register:hover {
  background-color: #8b1a1a;
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(139, 26, 26, 0.3);
}

@media (max-width: 768px) {
  .cloud-buttons {
    flex-direction: column;
  }
  
  .btn-login, .btn-register {
    width: 100%;
  }
}