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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f4f4f4;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navegación */
.navbar {
    background-color: #2c3e50;
    color: white;
    padding: 1rem 0;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

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

.nav-brand a {
    color: white;
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: bold;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu li a {
    color: white;
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: background-color 0.3s;
}

.nav-menu li a:hover {
    background-color: #34495e;
}

.nav-menu li.active a {
    background-color: #3498db;
}

.nav-menu .user-info {
    display: flex;
    align-items: center;
}

.nav-menu .username {
    color: white;
    padding: 0.5rem 1rem;
}

.nav-menu .logout-link {
    color: white;
    background-color: #e74c3c;
}

.nav-menu .logout-link:hover {
    background-color: #c0392b;
}

/* Contenido principal */
.main-content {
    flex: 1;
    padding: 2rem 0;
}

.hero {
    text-align: center;
    padding: 3rem 0;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
}

.hero h1 {
    color: #2c3e50;
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.hero-subtitle {
    color: #7f8c8d;
    font-size: 1.2rem;
}

/* Links Grid */
.links-grid {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
}

.links-grid h2 {
    color: #2c3e50;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

.links-grid-items {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.link-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem;
    background: #f8f9fa;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    text-decoration: none;
    transition: all 0.3s;
}

.link-card:hover {
    background: #e9ecef;
    border-color: #3498db;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.link-card-icon {
    font-size: 2rem;
}

.link-card-content {
    flex: 1;
}

.link-card-title {
    color: #2c3e50;
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}

.link-card-desc {
    color: #7f8c8d;
    font-size: 0.9rem;
}

/* Network Info */
.network-info {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
    border-left: 5px solid #3498db;
    transition: all 0.3s;
}

.network-info.local {
    border-left-color: #27ae60;
    background: linear-gradient(135deg, #ffffff 0%, #f0fff4 100%);
}

.network-info.external {
    border-left-color: #e74c3c;
    background: linear-gradient(135deg, #ffffff 0%, #fff5f5 100%);
}

.network-badge {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    font-size: 1.1rem;
    font-weight: 600;
}

.badge-icon {
    font-size: 1.5rem;
}

.network-info.local .badge-text {
    color: #27ae60;
}

.network-info.external .badge-text {
    color: #e74c3c;
}

.network-details {
    color: #555;
    line-height: 1.8;
    margin: 0;
}

.network-details strong {
    color: #2c3e50;
}

.network-note {
    color: #27ae60;
    font-size: 0.9rem;
    font-style: italic;
}

/* Cards */
.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.card {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0,0,0,0.15);
}

.card h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

.card p {
    color: #7f8c8d;
}

/* Content box */
.content-box {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin-top: 2rem;
}

.content-box h1 {
    color: #2c3e50;
    margin-bottom: 1.5rem;
}

.content-box ul {
    margin-left: 2rem;
    margin-top: 1rem;
}

.content-box li {
    margin-bottom: 0.5rem;
    color: #7f8c8d;
}

.content-box .info {
    margin-top: 1.5rem;
    padding: 1rem;
    background-color: #e8f4f8;
    border-left: 4px solid #3498db;
    border-radius: 4px;
    color: #2c3e50;
}

/* Links Grid */

/* Footer */
.footer {
    background-color: #2c3e50;
    color: white;
    text-align: center;
    padding: 2rem 0;
    margin-top: auto;
}

/* Responsive */
@media (max-width: 768px) {
    .navbar .container {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-menu {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .cards {
        grid-template-columns: 1fr;
    }

    .links-grid-items {
        grid-template-columns: 1fr;
    }
}

/* Login Page */
.login-page {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 0 20px;
}

.login-box {
    background: white;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
    padding: 2.5rem;
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-header h1 {
    color: #2c3e50;
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.login-header p {
    color: #7f8c8d;
    font-size: 1rem;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    color: #2c3e50;
    font-weight: 600;
    font-size: 0.9rem;
}

.form-group input {
    padding: 0.75rem;
    border: 2px solid #e0e0e0;
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
}

.btn {
    padding: 0.875rem;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.alert {
    padding: 1rem;
    border-radius: 6px;
    margin-bottom: 1.5rem;
}

.alert-error {
    background-color: #fee;
    border-left: 4px solid #e74c3c;
    color: #c0392b;
}

.logout-btn {
    background-color: #e74c3c;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    text-decoration: none;
    transition: background-color 0.3s;
    display: inline-block;
}

.logout-btn:hover {
    background-color: #c0392b;
}

/* Responsive login */
@media (max-width: 768px) {
    .login-box {
        padding: 2rem 1.5rem;
    }

    .login-header h1 {
        font-size: 1.5rem;
    }
}