:root {
    --primary: #1e3a8a;
    --primary-light: #eff6ff;
    --accent: #f97316;
    --accent-light: #fff7ed;
    --bg: #f8fafc;
    --card-bg: #ffffff;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --radius: 12px;
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.05), 0 2px 4px -2px rgb(0 0 0 / 0.05);
    --shadow-md: 0 10px 15px -3px rgb(0 0 0 / 0.05), 0 4px 6px -4px rgb(0 0 0 / 0.05);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Plus Jakarta Sans', sans-serif;
    background-color: var(--bg);
    color: var(--text-main);
    line-height: 1.6;
    padding-bottom: 60px;
}

/* Header / Hero */
header {
    background: linear-gradient(135deg, var(--primary) 0%, #0f172a 100%);
    color: white;
    padding: 40px 20px;
    text-align: center;
    border-bottom-left-radius: 24px;
    border-bottom-right-radius: 24px;
    box-shadow: var(--shadow-md);
}

header h1 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: -0.5px;
}

header p {
    color: #93c5fd;
    font-size: 0.95rem;
}

/* Contenedor Principal */
.container {
    max-width: 650px;
    margin: -20px auto 0 auto;
    padding: 0 16px;
}

/* Barra de Navegación (Tabs) */
.tabs-nav {
    display: flex;
    background: var(--card-bg);
    padding: 6px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    margin-bottom: 24px;
    border: 1px solid var(--border);
}

.tab-btn {
    flex: 1;
    background: none;
    border: none;
    padding: 12px 8px;
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: calc(var(--radius) - 4px);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.tab-btn:hover {
    color: var(--primary);
    background-color: var(--primary-light);
}

.tab-btn.active {
    color: var(--primary);
    background-color: var(--primary-light);
    box-shadow: inset 0 0 0 1px rgba(30, 58, 138, 0.1);
}

/* Contenido de los Tabs */
.tab-panel {
    display: none;
    animation: fadeIn 0.4s ease forwards;
}

.tab-panel.active {
    display: block;
}

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

/* Estilos de Tarjetas e Información */
.card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 16px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.card h3 {
    font-size: 1.1rem;
    color: var(--text-main);
    margin-bottom: 4px;
}

.date-subtitle {
    font-size: 0.8rem;
    color: var(--accent);
    font-weight: 600;
    margin-bottom: 12px;
    display: inline-block;
    background-color: var(--accent-light);
    padding: 2px 8px;
    border-radius: 20px;
}

.card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Sección Inicio Especial */
.info-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

.info-box {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 20px;
    border-left: 4px solid var(--primary);
    box-shadow: var(--shadow);
}

.info-box h2 {
    font-size: 1.1rem;
    margin-bottom: 10px;
    color: var(--primary);
}

.info-box ul {
    list-style: none;
}

.info-box li {
    font-size: 0.95rem;
    margin-bottom: 8px;
    color: var(--text-muted);
    display: flex;
    justify-content: space-between;
}

.info-box li strong {
    color: var(--text-main);
}

/* Botón de descarga interactivo */
.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 12px;
    padding: 10px 16px;
    background-color: var(--primary);
    color: white;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: 8px;
    transition: var(--transition);
}

.download-btn:hover {
    background-color: #1d4ed8;
    box-shadow: 0 4px 12px rgba(30, 58, 138, 0.2);
}

/* Footer */
footer {
    text-align: center;
    margin-top: 40px;
    font-size: 0.8rem;
    color: var(--text-muted);
}