:root {
    --primary: #1565a8;
    --primary-dark: #0d3b66;
    --secondary: #4ea8de;
    --light: #e8f4fc;
    --bg: #f5f8fc;
    --text: #1d2d3d;
    --muted: #5f7288;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

/* Navbar: blanca, limpia, con línea inferior */
.navbar-horizonte {
    background: #fff;
    border-bottom: 3px solid var(--primary);
    box-shadow: 0 2px 12px rgba(13, 59, 102, 0.08);
}

.navbar-horizonte .navbar-brand {
    color: var(--primary-dark) !important;
}

.navbar-horizonte .nav-link {
    color: var(--text) !important;
}

.navbar-horizonte .nav-link:hover,
.navbar-horizonte .nav-link.active {
    color: var(--primary) !important;
}

/* Hero */
.hero {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 55%, var(--secondary) 100%);
    color: #fff;
    padding: 80px 0;
    text-align: center;
}

.hero h1 {
    font-weight: 700;
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.25rem;
    opacity: 0.95;
}

/* Cards */
.card-horizonte {
    background: #fff;
    border: 1px solid #e1e9f2;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(13, 59, 102, 0.06);
    transition: transform 0.2s, box-shadow 0.2s;
    overflow: hidden;
}

.card-horizonte:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(13, 59, 102, 0.14);
}

.card-horizonte .card-img-top {
    border-radius: 12px 12px 0 0;
}

/* Buttons */
.btn-horizonte {
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 8px;
    padding: 10px 24px;
    font-weight: 500;
    transition: all 0.2s;
}

.btn-horizonte:hover {
    background: var(--primary-dark);
    color: #fff;
    transform: translateY(-1px);
}

.btn-outline-horizonte {
    border: 2px solid var(--primary);
    color: var(--primary);
    background: transparent;
    border-radius: 8px;
    padding: 8px 22px;
    font-weight: 500;
}

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

/* Footer */
.footer-horizonte {
    background: var(--primary-dark);
    color: rgba(255, 255, 255, 0.8);
    padding: 40px 0;
    margin-top: auto;
}

/* Content */
.content img {
    max-width: 100%;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(13, 59, 102, 0.1);
}

.badge-horizonte {
    background: var(--light);
    color: var(--primary-dark);
    font-weight: 500;
}

/* 404 */
.error-404 {
    text-align: center;
    padding: 100px 0;
}

.error-404 h1 {
    font-size: 6rem;
    color: var(--secondary);
    font-weight: 700;
}