/* css/index.css */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

body::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('../img/pattern.png');
    opacity: 0.1;
    z-index: 1;
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
    position: relative;
    z-index: 2;
}

.login-box {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.logo {
    width: 120px;
    height: 120px;
    margin: 0 auto 20px;
    background: white;
    border-radius: 50%;
    padding: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 50%;
}

.login-box h1 {
    color: #333;
    margin-bottom: 30px;
    font-size: 24px;
    font-weight: 600;
}

.input-group {
    margin-bottom: 20px;
    position: relative;
}

.input-group input {
    width: 100%;
    padding: 15px 20px;
    border: 2px solid #e1e1e1;
    border-radius: 12px;
    font-size: 16px;
    transition: all 0.3s;
    background: rgba(255, 255, 255, 0.8);
}

.input-group input:focus {
    outline: none;
    border-color: #667eea;
    background: white;
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.1);
}

.input-group input::placeholder {
    color: #a0a0a0;
}

.login-btn {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.login-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.login-btn:hover::before {
    left: 100%;
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
}

.error-message {
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a52 100%);
    color: white;
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-weight: 500;
}

/* Efectos de partículas en el fondo */
.particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.particle {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
}

@media (max-width: 480px) {
    .login-box {
        padding: 30px 20px;
        margin: 20px;
    }
    
    .logo {
        width: 100px;
        height: 100px;
    }
}