/*
  Hoja de estilos principal para AI Work Miner (AIWM).

  Este archivo utiliza variables CSS y diseño flexible (Flexbox y Grid)
  para lograr una apariencia moderna, en modo oscuro y adaptada a
  diferentes tamaños de pantalla. Las recomendaciones de contraste
  provienen de las mejores prácticas de diseño de dark mode: se evitan
  contrastes demasiado altos (negro puro / blanco puro) para reducir
  la fatiga ocular【875679809759998†L206-L210】.
*/

/* Variables de colores y tipografías */
:root {
    --color-bg: #0e121b; /* fondo principal: gris oscuro azulado */
    --color-bg-light: #1a2130; /* paneles y secciones */
    --color-primary: #00aaff; /* color de acento principal */
    --color-secondary: #00c18f; /* color de acento secundario */
    --color-text: #e2e6ea; /* texto claro */
    --color-muted: #8c92a4; /* texto apagado */
    --font-family: 'Poppins', sans-serif;
    --transition: 0.3s ease-in-out;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: var(--color-secondary);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Encabezado */
.header {
    background-color: var(--color-bg-light);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 10;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

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

.logo {
    font-size: 1.8rem;
    font-weight: 600;
}

.logo .highlight {
    color: var(--color-primary);
}

.nav ul {
    display: flex;
    gap: 1rem;
    list-style: none;
}

.nav a {
    font-weight: 400;
    font-size: 1rem;
    padding: 0.5rem 0.75rem;
    border-radius: 4px;
    transition: background-color var(--transition);
}

.nav a:hover {
    background-color: rgba(0, 170, 255, 0.15);
}

/* Sección hero */
.hero {
    background: linear-gradient(135deg, #0b1b2b 0%, #142446 50%, #0b1b2b 100%);
    padding: 4rem 0;
    text-align: center;
}

.hero-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.hero-content p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    color: var(--color-muted);
}

.btn-primary {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background-color: var(--color-primary);
    color: #fff;
    border-radius: 4px;
    font-weight: 600;
    transition: background-color var(--transition), transform var(--transition);
}

.btn-primary:hover {
    background-color: var(--color-secondary);
    transform: translateY(-2px);
}

/* Sección de características */
.section {
    padding: 4rem 0;
}

.section h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    text-align: center;
}

.about p {
    margin-bottom: 2rem;
    text-align: justify;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 2rem;
}

.feature h3 {
    margin-bottom: 0.5rem;
    color: var(--color-primary);
}

.feature p {
    color: var(--color-muted);
}

/* Gráfica */
.chart-note {
    margin-top: 0.5rem;
    font-size: 0.9rem;
    color: var(--color-muted);
    text-align: center;
}

/* Altura fija para el lienzo de la gráfica para evitar que ocupe toda la pantalla */
.chart canvas {
    height: 320px !important;
}

/* Noticias */
.news-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.news-item {
    background-color: var(--color-bg-light);
    border-radius: 6px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform var(--transition);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

.news-item:hover {
    transform: translateY(-4px);
}

.news-image {
    width: 100%;
    height: 140px;
    object-fit: cover;
}

.news-content {
    padding: 1rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.news-content h4 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--color-primary);
}

.news-content p {
    font-size: 0.9rem;
    color: var(--color-muted);
    flex-grow: 1;
}

.news-content a {
    align-self: flex-start;
    margin-top: 0.5rem;
    font-weight: 500;
    color: var(--color-secondary);
}

/* Cartera */
.wallet-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.btn-secondary {
    padding: 0.65rem 1.25rem;
    background-color: var(--color-secondary);
    color: #fff;
    border: none;
    border-radius: 4px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color var(--transition), transform var(--transition);
}

.btn-secondary:hover {
    background-color: var(--color-primary);
    transform: translateY(-2px);
}

.wallet-status {
    text-align: center;
    font-size: 0.95rem;
    color: var(--color-muted);
}

/* Pie de página */
.footer {
    background-color: var(--color-bg-light);
    padding: 1rem 0;
    text-align: center;
    font-size: 0.9rem;
    color: var(--color-muted);
}

.footer-content p {
    margin-bottom: 0.3rem;
}

/* Responsividad */
@media (max-width: 768px) {
    .hero-content h2 {
        font-size: 2rem;
    }
    .nav ul {
        flex-direction: column;
        gap: 0.5rem;
    }
    .nav a {
        padding: 0.5rem 0;
    }
}