:root {
  --color-bg: #16161a;
  --color-card: #1a1a2e;
  --color-accent: #4b90fe;          /* Azul primario */
  --color-accent-alt: #a8c7ff;      /* Azul claro */
  --color-text: #fff;
  --color-muted: #b3ceff;           /* Azul suave para textos secundarios */
  --radius-lg: 2rem;
  --radius: 1.2rem;
  --shadow: 0 6px 30px 0 #00408055, 0 2px 8px 0 #000a;
}

/* Fondo y tipografía principal */
body {
  background: linear-gradient(120deg, var(--color-bg) 70%, #222c47 100%);
  color: var(--color-text);
  font-family: 'Poppins', 'Segoe UI', Arial, sans-serif;
  margin: 0;
  min-height: 100vh;
}

/* Header y layout responsivo */
.header {
  padding: 2.5rem 1rem 1.5rem 1rem;
  background: var(--color-card);
  display: flex;
  justify-content: center;
}

.header-content {
  display: flex;
  align-items: center;
  max-width: 1050px;
  gap: 3rem;
  width: 100%;
  flex-wrap: wrap;
  justify-content: space-between;
}

/* Contenedor de texto para facilitar responsividad */
.header-content > div:first-child {
  flex: 1 1 360px;
  min-width: 280px;
}

/* Contenedor del avatar/logo mejor colocado */
.avatar {
  flex: 0 0 220px;
  display: flex;
  justify-content: center;
  align-items: center;
  min-width: 160px;
  order: 2;
}

/* Imagen del logo con marco azul elegante */
.avatar img {
  width: 320px;
  height: 320px;
  object-fit: contain;
  border-radius: 0; /* Sin bordes ni radio */
  background: transparent;
  border: none;
  box-shadow: none;
  transition: transform 0.3s ease;
  cursor: pointer;
  max-width: 90vw; /* Para que en pantallas pequeñas no desborde */
  height: auto; /* Mantener proporción */
}

.avatar img:hover {
  transform: scale(1.05);
}

/* Ajuste responsive para pantallas pequeñas */
@media (max-width: 900px) {
  .avatar img {
    width: 240px;
    height: auto;
  }
}

@media (max-width: 600px) {
  .avatar img {
    width: 170px;
    height: auto;
  }
}

@media (max-width: 400px) {
  .avatar img {
    width: 140px;
    height: auto;
  }
}



/* Títulos y texto en el header */
.dev-role {
  text-transform: uppercase;
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-accent-alt);
  margin-bottom: 0.7rem;
  letter-spacing: 2px;
}
.header h1 {
  margin: 0 0 0.7rem 0;
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-accent);
}
.header p {
  margin: 0 0 1.3rem 0;
  font-size: 1.18rem;
  color: var(--color-muted);
  line-height: 1.5;
  max-width: 430px;
}

/* Botones */
.header-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}
.btn, .btn.alt {
  font-family: inherit;
  background: var(--color-accent);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  font-size: 1.05rem;
  cursor: pointer;
  text-decoration: none;
  box-shadow: var(--shadow);
  transition: background 0.22s, color 0.2s, transform 0.16s;
}
.btn.alt {
  background: transparent;
  color: var(--color-accent);
  border: 2px solid var(--color-accent);
  box-shadow: none;
}
.btn:hover {
  background: var(--color-accent-alt);
  color: var(--color-bg);
  transform: translateY(-2px) scale(1.05);
}

/* Sección de detalles */
.project-details {
  max-width: 760px;
  margin: 2.8rem auto 0 auto;
  background: var(--color-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 2.5rem 2.25rem;
}

.project-details h2 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-top: 2.2rem;
  margin-bottom: 1rem;
  letter-spacing: 1px;
}

.project-details p {
  font-size: 1.08rem;
  color: var(--color-muted);
  line-height: 1.68;
  margin-bottom: 2rem;
  margin-top: 0.2rem;
}

.tech-list {
  padding: 0;
  margin: 0 0 2.2rem 0;
  display: flex;
  gap: 0.7rem;
  flex-wrap: wrap;
  list-style: none;
}

.tech-list li {
  background: var(--color-bg);
  color: var(--color-accent-alt);
  padding: 0.2rem 0.7rem;
  border-radius: 0.5rem;
  font-size: 0.9rem;
}


.video-wrapper {
  background: #1e2a62;
  border-radius: 1.2rem;
  box-shadow: 0 2px 24px 3px #4462d678;
  overflow: hidden;
  margin-bottom: 2.5rem;
  margin-top: 1.6rem;
  position: relative;
}
.video-wrapper iframe {
  width: 100%;
  height: 380px;
  border: none;
  display: block;
  border-radius: 1.2rem;
}

/* Sección acordeón integrada */
.accordion {
  margin: 2.5rem 0 0 0;
  border-radius: var(--radius);
  background: var(--color-bg);
  box-shadow: 0 2px 14px #4b90fe33;
  overflow: hidden;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}
.accordion-item:not(:last-child) {
  border-bottom: 1px solid #ffffff;
}
.accordion-header {
  color: #fff !important; /* Solo el texto de la pregunta en blanco */
  background: transparent;
  font-weight: 700;
  font-size: 1.1rem;
  padding: 1.2rem 1.5rem;
  cursor: pointer;
  border: none;
  text-align: left;
  letter-spacing: 0.5px;
  transition: color 0.3s;
}

.accordion-header::after {
  color: #fff; /* Si quieres que la flecha también esté en blanco */
}

.accordion-header:hover {
  color: #a8c7ff !important; /* Opcional: azul claro en hover */
}

.accordion-header.active::after {
  transform: rotate(180deg);
}
.accordion-body {
  max-height: 0;
  overflow: hidden;
  background: var(--color-card);
  color: var(--color-muted);
  padding: 0 1.6rem;
  transition: max-height 0.4s cubic-bezier(.5,1.5,.5,1), padding 0.3s;
}
.accordion-header.active + .accordion-body {
  max-height: 400px;
  padding: 1.5rem 1.6rem;
}

/* Responsive */

@media (max-width: 900px) {
  .header-content {
    flex-direction: column-reverse;
    gap: 2rem;
    align-items: center;
    text-align: center;
  }
  .avatar {
    order: 1;
    flex: unset;
  }
  .header p {
    max-width: 90vw;
    font-size: 1.04rem;
  }
  .avatar img {
    width: 160px;
    height: 160px;
    border-width: 6px;
  }
}

@media (max-width: 600px) {
  .header h1 {
    font-size: 1.6rem;
  }
  .header p {
    font-size: 1rem;
  }
  .btn, .btn.alt {
    padding: 0.6rem 1.2rem;
    font-size: 0.95rem;
  }
  .header-buttons {
    justify-content: center;
  }
  .avatar img {
    width: 130px;
    height: 130px;
    border-width: 4px;
  }
  .project-details {
    padding: 1.8rem 1rem;
  }
  .video-wrapper iframe {
    height: 220px;
  }
}

@media (max-width: 400px) {
  .avatar img {
    width: 110px;
    height: 110px;
    border-width: 3px;
  }
  .header h1 {
    font-size: 1.3rem;
  }
}

/* Scrollbar minimalista */
::-webkit-scrollbar {
  width: 7px;
  background: #12244f;
}
::-webkit-scrollbar-thumb {
  background: var(--color-accent);
  border-radius: 7px;
}

.footer {
  background: #0d111a;
  color: #b8c3d9;
  text-align: center;
  padding: 2rem 1rem;
  font-family: 'Poppins', 'Segoe UI', sans-serif;
  border-top: 1px solid #1f2635;
}

.footer p {
  margin: 0 0 0.8rem 0;
  font-size: 0.95rem;
  color: #d1dcf5;
}

.footer-links {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.footer-links a {
  color: #84aaff;
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: #c2d8ff;
}

.footer-links span {
  color: #6b7485;
}

@media (max-width: 600px) {
  .footer-links {
    flex-direction: column;
    gap: 0.3rem;
  }
  .footer-links span {
    display: none;
  }
}