:root {
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --bg-color: #f8fafc;
    --text-color: #1e293b;
    --text-light: #64748b;
    --card-bg: #ffffff;
    --container-width: 1100px;
    --border-radius: 12px;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* Navbar */
.navbar {
    background: #fff;
    padding: 20px 0;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    font-weight: 800;
    font-size: 1.5rem;
    color: var(--primary-color);
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 600;
    margin-left: 20px;
    transition: color 0.3s;
}

/* Hero Section */
.hero {
    padding: 80px 0;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
}

.hero-flex {
    display: flex;
    align-items: center;
    gap: 40px;
}

.hero-text {
    flex: 1;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.1;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
}

.hero-image img {
    max-width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 20px 25px -5px rgba(0,0,0,0.1);
}

/* Portfolio Section */
.portfolio {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 50px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
    border: 1px solid #e2e8f0;
    display: flex;
    flex-direction: column;
}

.card:hover {
    transform: translateY(-5px);
}

.card-header {
    padding: 30px 30px 10px;
    display: flex;
    justify-content: center;
}

.app-icon {
    width: 100px;
    height: 100px;
    border-radius: 22%; /* Típico radio de esquinas de iconos mobile */
    object-fit: cover;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.card-content {
    padding: 20px 25px 25px;
    text-align: center;
    flex-grow: 1;
}

.card h3 {
    font-size: 1.4rem;
    margin-bottom: 12px;
}

.card p {
    color: var(--text-light);
    margin-bottom: 25px;
    font-size: 0.95rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
}

.btn-primary {
    background-color: var(--primary-color);
    color: #fff;
}

.btn-outline {
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    display: block;
}

.btn-outline:hover {
    background-color: var(--primary-color);
    color: #fff;
}

/* Footer */
footer {
    background: #0f172a;
    color: #fff;
    padding: 60px 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-bottom {
    text-align: center;
    border-top: 1px solid #1e293b;
    padding-top: 20px;
    color: #64748b;
}

/* Responsive */
@media (max-width: 900px) {
    .hero-flex {
        flex-direction: column;
        text-align: center;
    }
    .hero h1 {
        font-size: 2.5rem;
    }
}