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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 50%, #7e22ce 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

/* Página de Login */
.login-container {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    padding: 40px;
    max-width: 400px;
    width: 100%;
    animation: fadeIn 0.6s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.logo {
    text-align: center;
    margin-bottom: 30px;
}

.logo-icon {
    font-size: 4em;
    margin-bottom: 10px;
    display: block;
}

h1 {
    color: #1e3c72;
    text-align: center;
    margin-bottom: 10px;
    font-size: 2em;
}

.subtitle {
    text-align: center;
    color: #666;
    margin-bottom: 30px;
    font-size: 0.9em;
}

.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    color: #333;
    margin-bottom: 8px;
    font-weight: 500;
}

input[type="text"],
input[type="password"] {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-size: 1em;
    transition: all 0.3s ease;
}

input[type="text"]:focus,
input[type="password"]:focus {
    outline: none;
    border-color: #7e22ce;
    box-shadow: 0 0 0 3px rgba(126, 34, 206, 0.1);
}

.btn-login {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, #1e3c72 0%, #7e22ce 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 1.1em;
    font-weight: bold;
    cursor: pointer;
    transition: transform 0.2s ease;
    margin-top: 10px;
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(126, 34, 206, 0.4);
}

/* Página Principal */
.main-container {
    display: none;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    padding: 40px;
    max-width: 900px;
    width: 100%;
    animation: fadeIn 0.6s ease-out;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid #e0e0e0;
}

.welcome {
    font-size: 1.5em;
    color: #1e3c72;
}

.btn-logout {
    padding: 10px 20px;
    background: #dc2626;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: background 0.3s ease;
}

.btn-logout:hover {
    background: #b91c1c;
}

.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.card {
    background: linear-gradient(135deg, #f8fafc 0%, #e0e7ff 100%);
    padding: 25px;
    border-radius: 15px;
    border-left: 4px solid #7e22ce;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(126, 34, 206, 0.2);
}

.card-icon {
    font-size: 2.5em;
    margin-bottom: 15px;
    display: block;
}

.card h3 {
    color: #1e3c72;
    margin-bottom: 10px;
    font-size: 1.3em;
}

.card p {
    color: #666;
    line-height: 1.6;
    font-size: 0.95em;
}

.info-section {
    background: linear-gradient(135deg, #1e3c72 0%, #7e22ce 100%);
    color: white;
    padding: 30px;
    border-radius: 15px;
    margin-top: 20px;
}

.info-section h2 {
    margin-bottom: 15px;
    font-size: 1.8em;
}

.info-section p {
    line-height: 1.8;
    margin-bottom: 15px;
}

.features-list {
    list-style: none;
    padding: 0;
}

.features-list li {
    padding: 10px 0;
    padding-left: 30px;
    position: relative;
}

.features-list li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #4ade80;
    font-weight: bold;
    font-size: 1.2em;
}

/* Responsive */
@media (max-width: 600px) {
    .login-container, .main-container {
        padding: 25px;
    }

    h1 {
        font-size: 1.5em;
    }

    .header {
        flex-direction: column;
        gap: 15px;
    }
}