:root {
    --bg-dark: #1A1A2E; 
    --card-bg-light: #2A3C4D; 
    --accent-blue: #00BCD4; 
    --accent-purple: #9C27B0; 
    --text-light: #E0F7FA; 
    --text-faded: #B2EBF2; 
    --border-glow: #00BCD4; 
}


body.dark-mode {
    background-color: #FFFFFF; 
    color: var(--text-light);
}

body {
    font-family: 'Segoe UI', 'Roboto', sans-serif; 
    background: linear-gradient(135deg, #0d0d1a, #1a1a2e); 
    color: var(--text-light);
    margin: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh; 
    padding: 20px;
    box-sizing: border-box;
}

h1 {
    color: var(--accent-blue);
    font-size: 3em;
    text-shadow: 0 0 10px var(--accent-blue), 0 0 20px rgba(0, 188, 212, 0.5); 
    margin-bottom: 40px;
    margin-top: 20px;
}


#darkModeToggle {
    background-color: var(--accent-purple);
    color: var(--text-light);
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1em;
    margin-bottom: 20px;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

#darkModeToggle:hover {
    background-color: #7B1FA2;
    transform: translateY(-2px);
}


.logo-container {
    width: 150px;
    height: 150px;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 30px;
    
    border: 2px solid rgba(0, 188, 212, 0.5);
    border-radius: 50%; 
    box-shadow: 0 0 15px rgba(0, 188, 212, 0.8), 0 0 30px rgba(0, 188, 212, 0.4); /* Brillo alrededor */
    overflow: hidden; 
}

.logo-container img {
   
    border-radius: 50%; 
}


.container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 30px; 
    width: 90%;
    max-width: 1200px;
    margin-top: 40px;
}

.card {
    background: linear-gradient(145deg, var(--card-bg-light), #3D5A70); 
    border-radius: 15px; 
    padding: 25px;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.4), 0 0 20px rgba(0, 188, 212, 0.2); 
    text-align: center;
    width: 100%;
    max-width: 320px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid rgba(0, 188, 212, 0.3); 
    position: relative; 
    overflow: hidden; 
}

.card:hover {
    transform: translateY(-10px) scale(1.02); 
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.6), 0 0 30px var(--accent-blue); 
}

.card h2 {
    color: var(--accent-blue);
    font-size: 1.8em;
    margin-bottom: 15px;
    text-shadow: 0 0 5px rgba(0, 188, 212, 0.7); 
}

.card p {
    color: var(--text-faded);
    margin-bottom: 8px;
    line-height: 1.4;
    font-size: 0.95em;
}

.card p strong {
    color: var(--text-light); 
}


body.dark-mode .card {
    background: linear-gradient(145deg, #1f2b3a, #283a4d);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.6), 0 0 20px rgba(156, 39, 176, 0.3); 
    border-color: rgba(156, 39, 176, 0.5);
}

body.dark-mode .card:hover {
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.8), 0 0 30px var(--accent-purple);
}

body.dark-mode .card h2 {
    color: var(--accent-purple);
    text-shadow: 0 0 5px rgba(156, 39, 176, 0.7);
}