/* RESET */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* VARIABLES */
:root {
    --blue: #1a73e8;
    --blue-dark: #0f1c3f;
    --yellow: #ffd700;
    --light-bg: #f2f3f5;
    --text-dark: #0f1c3f;
    --text-light: #ffd700;
    --card-bg: #ffffff;
}

/* DARK MODE VARIABLES */
body.dark-mode {
    --blue: #64a1ff;
    --blue-dark: #081530;
    --yellow: #ffdf40;
    --light-bg: #0f1c3f;
    --text-dark: #f7f9fc;
    --card-bg: #1d305c;
}

/* GENERAL */
body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--light-bg);
    color: var(--text-dark);
    transition: background 0.3s, color 0.3s;
    line-height: 1.6;
}

/* NAVBAR */
header {
    background: var(--card-bg);
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    z-index: 10;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: background 0.3s;
}

.navbar {
    max-width: 1100px;
    margin: auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.logo {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--blue);
    text-decoration: none;
    transition: color 0.3s;
}

/* Hover del logo según tema */
body:not(.dark-mode) .logo:hover {
    color: var(--yellow);
}
body.dark-mode .logo:hover {
    color: var(--text-light);
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 20px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--blue);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.menu-toggle {
    display: none;
    font-size: 1.8rem;
    cursor: pointer;
    color: var(--blue);
}

/* Botón idioma */
.lang-btn {
    background: transparent;
    border: none;
    font-size: 1.3rem;
    cursor: pointer;
    transition: transform 0.2s;
}
.lang-btn:hover {
    transform: scale(1.2);
}

/* Botón tema */
.theme-btn {
    background: var(--blue);
    border: none;
    color: var(--light-bg);
    padding: 5px 10px;
    border-radius: 20px;
    cursor: pointer;
    transition: 0.3s;
}
.theme-btn:hover {
    background: var(--yellow);
    color: var(--blue-dark);
}

/* HERO */
.hero { 
    display: flex;
    justify-content: space-between; 
    align-items: center; 
    padding: 140px 10%; 
    flex-wrap: wrap; 
    background: linear-gradient(120deg, #83a2d8, #fff); 
    transition: background 0.3s; 
}

body.dark-mode .hero {
    background: linear-gradient(120deg, #09122e, #83a2d8); 
}

.hero-content {
    max-width: 500px;
}

.hero h1 {
    font-size: 2.6rem;
    color: var(--text-dark);
}

.hero h1 span {
    color: var(--blue);
}

.hero p {
    margin: 20px 0;
    font-size: 1.1rem;
}

.btn {
    display: inline-block;
    background: var(--yellow);
    color: var(--blue-dark);
    padding: 10px 25px;
    border-radius: 25px;
    text-decoration: none;
    transition: 0.3s;
    font-weight: 600;
}

.btn:hover {
    background: var(--blue);
    color: #fff;
}

.hero-img img {
    width: 300px;
    border-radius: 50%;
    border: 5px solid var(--blue);
}

/* SECCIONES */
section {
    padding: 100px 10%;
    text-align: center;
}

h2 {
    font-size: 2rem;
    color: var(--blue);
    margin-bottom: 25px;
}

.container {
    max-width: 1000px;
    margin: auto;
}

/* PROYECTOS */
.projects .project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
    gap: 25px;
    margin-top: 40px;
}

.project-card {
    background: var(--card-bg);
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    transition: transform 0.3s, box-shadow 0.3s, background 0.3s;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.project-card img {
    width: 100%;
    border-radius: 10px;
    margin-bottom: 15px;
}

/* CAROUSEL CERTIFICADOS */
.certificates {
    padding: 100px 10%;
}

.carousel {
    position: relative;
    overflow: hidden;
    max-width: 1000px;
    margin: auto;
}

.carousel-track-container {
    overflow: hidden;
}

.carousel-track {
    display: flex;
    transition: transform 0.5s ease-in-out;
    gap: 20px;
}

.carousel-slide {
    min-width: calc(33.333% - 13.33px); /* 3 visibles */
    background: var(--card-bg);
    border-radius: 15px;
    padding: 20px;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    transition: transform 0.3s, box-shadow 0.3s;
}

.carousel-slide img {
    width: 100%;
    border-radius: 10px;
    margin-bottom: 15px;
}

.carousel-slide h3 {
    color: var(--blue);
    margin-bottom: 10px;
}

.carousel-slide p {
    color: var(--text-dark);
}

/* Botones */
/* --- BOTONES DEBAJO DEL CARRUSEL --- */
.carousel-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
    margin-top: 25px;
}

.carousel-btn {
    position: static; /* ya no flotan dentro del carrusel */
    background: var(--blue);
    border: none;
    color: #fff;
    font-size: 1.5rem;
    padding: 8px 18px;
    cursor: pointer;
    border-radius: 10px;
    transition: background 0.3s, transform 0.2s;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

.carousel-btn:hover {
    background: var(--yellow);
    color: var(--blue-dark);
    transform: translateY(-2px);
}

/* Modo oscuro */
body.dark-mode .carousel-btn {
    background: var(--yellow);
    color: var(--blue-dark);
}
body.dark-mode .carousel-btn:hover {
    background: var(--blue);
    color: var(--light-bg);
}

/* Modo oscuro Proyectos y Certificados */
body.dark-mode .project-card,
body.dark-mode .carousel-slide {
    background: #1d2f64;
    color: var(--text-light);
    box-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

body.dark-mode .carousel-slide h3 {
    color: var(--yellow);
}

body.dark-mode .carousel-slide p {
    color: var(--text-light);
}

body.dark-mode .carousel-btn {
    background: var(--yellow);
    color: #09122e;
}

body.dark-mode .carousel-btn:hover {
    background: var(--blue);
    color: var(--light-bg);
}

/* CONTACTO */
.contact p {
    margin-bottom: 20px;
    font-size: 1.1rem;
}

/* FOOTER */
footer {
    background: var(--blue-dark);
    color: var(--text-light);
    text-align: center;
    padding: 15px;
    font-size: 0.9rem;
}

/* LANG TOGGLE */
.lang-toggle {
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    user-select: none;
    display: flex;
    align-items: center;
    gap: 5px;
    color: var(--text-dark);
    transition: color 0.3s;
}

.lang-toggle .lang-option {
    padding: 2px 6px;
    border-radius: 5px;
    transition: background 0.3s, color 0.3s;
}

.lang-toggle .lang-option.active {
    background-color: var(--yellow);
    color: var(--blue-dark);
    font-weight: 700;
}

/* RESPONSIVE */
@media (max-width: 1024px) {
    .carousel-slide {
        min-width: calc(50% - 10px); /* 2 visibles */
    }
}

@media (max-width: 768px) {
  /* Mostrar el icono del menú */
  .menu-toggle {
    display: block;
    padding: 10px 14px;
    border-radius: 10px;
    background-color: rgba(255, 255, 255, 0.18);
    cursor: pointer;
    transition: background-color 0.25s ease, transform 0.15s ease;
    font-size: 1.6rem;
    color: var(--blue);
    z-index: 30; /* por encima del menú */
  }

  .hero-img {
    margin-top: 30px; /* separa la imagen del botón */
  }

  .menu-toggle:hover {
    background-color: rgba(255, 255, 255, 0.28);
    transform: scale(1.03);
  }

  .nav-links a:hover{
    color: #000;
  }

  /* Ocultamos el menú por defecto en móvil (uso del id/class real) */
  /* Usamos selector con id para ser específico si tu ul tiene id="nav-links" */
  .nav-links,
  #nav-links {
    display: none !important;
  }

  /* Menú cuando está activo (clase .active añadida por JS) */
  .nav-links.active,
  #nav-links.active {
    display: flex !important;
    position: absolute;
    top: 64px; /* separa del header */
    right: 16px;
    width: 220px;
    flex-direction: column;
    gap: 6px;
    padding: 14px;
    background: #64a1ff;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.18);
    backdrop-filter: blur(6px);
    z-index: 25;

    text-align: left;
  }

  /* Alineación del header para que el botón no quede pegado al borde */
  .navbar {
    padding: 12px 18px;
  }

  /* Estilo de los items */
  .nav-links li {
    list-style: none;
    margin: 0;
  }

  .nav-links li a {
    display: block;
    padding: 10px 12px;
    border-radius: 8px;
    font-size: 0.98rem;
    font-weight: 600;
    color: var(--text-dark);
    text-decoration: none;
    transition: background 0.22s ease, color 0.22s ease;
  }

  .nav-links li a:hover {
    background: rgba(21, 87, 173, 0.08); /* ligero tono azul */
  }

  /* Opcional: ajuste para el toggle de idioma y tema dentro del menú si se muestran ahí */
  .nav-actions {
    gap: 8px;
  }

    /* Mismo fondo en modo oscuro */
  body.dark-mode .nav-links {
    background: #a8c8ff; /* Igual azul claro */
  }

  body.dark-mode .nav-links a {
    color: #000; /* Letras negras también en oscuro */
  }


  @keyframes menuDrop {
    from { opacity: 0; transform: translateY(-8px); }
    to   { opacity: 1; transform: translateY(0); }
  }
}