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

:root {
    /* Regla 60-30-10 */
    --primary-dark: #0a0a0a;      /* 60% - Negro profundo */
    --secondary-dark: #1a1a1a;    /* 30% - Gris oscuro */
    --accent-green: #10b981;      /* 10% - Verde esmeralda elegante */
    
    /* Colores adicionales */
    --text-white: #ffffff;
    --text-gray: #8a8a8a;
    --border-gray: #2a2a2a;
    --card-bg: rgba(20, 20, 20, 0.8);
    --green-glow: rgba(16, 185, 129, 0.3);
    --green-light: #34d399;
    --green-dark: #059669;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--primary-dark);
    color: var(--text-white);
    overflow-x: hidden;
    line-height: 1.6;
    min-height: 100vh;
    margin: 0;
    padding: 0;
}

/* Typography */
.main-title {
    font-size: 56px;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 30px;
    letter-spacing: -1.5px;
    color: var(--text-white);
}

.subtitle {
    font-size: 18px;
    color: var(--text-gray);
    margin-bottom: 40px;
    line-height: 1.7;
    font-weight: 400;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-weight: 700;
    color: var(--text-white);
    line-height: 1.3;
    margin: 0 0 1rem 0;
}

a {
    color: var(--accent-green);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--green-light);
}

/* Animations */
@keyframes typewriter {
    0%, 20% { opacity: 0; transform: translateX(-10px); }
    30%, 90% { opacity: 1; transform: translateX(0); }
    100% { opacity: 0; transform: translateX(10px); }
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

/* Utilities */
.hidden {
    display: none;
}

.visible {
    display: block;
}

.fade-in {
    opacity: 0;
    animation: fadeIn 0.5s ease-in-out forwards;
}

@keyframes fadeIn {
    to { opacity: 1; }
}