:root {
    --f1-red: #e10600;
    --carbon-black: #15151e;
    --track-gray: #38383f;
    --asphalt: #2b2b32;
    --clean-white: #ffffff;
    --soft-gray: #f3f3f3;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--soft-gray);
    color: var(--carbon-black);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Navegación */
.nav-bar {
    background: var(--carbon-black);
    padding: 1rem 10%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 3px solid var(--f1-red);
}

.nav-logo {
    color: var(--clean-white);
    font-weight: 800;
    text-decoration: none;
    font-size: 1.5rem;
    letter-spacing: -1px;
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    color: var(--clean-white);
    text-decoration: none;
    font-size: 0.9rem;
    text-transform: uppercase;
    font-weight: 600;
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--f1-red);
}

/* Hero */
.hero {
    background-color: var(--carbon-black);
    color: var(--clean-white);
    padding: 5rem 10%;
    text-align: left;
}

.hero h1 {
    font-size: 3.5rem;
    text-transform: uppercase;
    margin-bottom: 1rem;
    line-height: 1;
}

.hero p {
    color: var(--soft-gray);
    max-width: 600px;
    font-size: 1.1rem;
    opacity: 0.8;
}

/* Contenedores */
.container {
    max-width: 1200px;
    margin: 4rem auto;
    padding: 0 1rem;
    flex-grow: 1;
}

.section-title {
    margin-bottom: 2rem;
    font-size: 1.5rem;
    text-transform: uppercase;
    border-left: 5px solid var(--f1-red);
    padding-left: 1rem;
}

/* Grid de Artículos (Index) */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2.5rem;
}

.article-card {
    background: var(--clean-white);
    border-radius: 4px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.article-card:hover:not(.disabled) {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.1);
}

.article-card.disabled {
    opacity: 0.6;
}

.card-image {
    width: 100%;
    height: 220px;
    background: var(--track-gray);
    overflow: hidden;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.card-body {
    padding: 2rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.card-body h2 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    line-height: 1.2;
}

/* Botones */
.btn-read, .btn-read-disabled {
    align-self: flex-start;
    padding: 0.8rem 1.5rem;
    text-decoration: none;
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.8rem;
    border-radius: 2px;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.btn-read {
    background: var(--f1-red);
    color: var(--clean-white);
}

.btn-read:hover {
    background: var(--carbon-black);
}

.btn-read-disabled {
    background: var(--track-gray);
    color: var(--clean-white);
    cursor: not-allowed;
}

/* Diseño de Artículo y About (Ancho de lectura optimizado) */
.full-article, .about-section {
    background: var(--clean-white);
    padding: 3rem;
    border-radius: 4px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    margin: 0 auto 2rem;
    max-width: 800px;
    width: 100%;
}

.article-body h3, .about-section h2 {
    margin: 2.5rem 0 1rem;
    border-bottom: 2px solid var(--soft-gray);
    padding-bottom: 0.5rem;
    text-transform: uppercase;
    font-size: 1.2rem;
}

/* Tablas */
.data-wrapper {
    margin: 2rem 0;
    overflow-x: auto;
}

.f1-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--clean-white);
    font-size: 0.9rem;
}

.f1-table th {
    background: var(--track-gray);
    color: white;
    text-align: left;
    padding: 12px;
    text-transform: uppercase;
}

.f1-table td {
    padding: 12px;
    border-bottom: 1px solid var(--soft-gray);
}

/* Video y Multimedia */
.video-wrapper {
    margin: 2rem 0;
    background: var(--carbon-black);
    aspect-ratio: 16 / 9;
    border-radius: 4px;
    overflow: hidden;
    position: relative;
}

.play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 68px;
    height: 48px;
    background: rgba(225, 6, 0, 0.9);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.play-button::after {
    content: "";
    border-style: solid;
    border-width: 10px 0 10px 15px;
    border-color: transparent transparent transparent white;
}

.chart-wrapper {
    margin: 2.5rem 0;
    padding: 1.5rem;
    background: #fff;
    border: 1px solid var(--soft-gray);
    border-radius: 4px;
}

/* Footer */
.main-footer {
    background: var(--carbon-black);
    color: var(--clean-white);
    padding: 3rem 10%;
    text-align: center;
    margin-top: auto;
}

@media (max-width: 768px) {
    .full-article, .about-section { padding: 1.5rem; }
    .hero h1 { font-size: 2.2rem; }
    .nav-bar { padding: 1rem 5%; }
}